PUHY-P400YMF-C, P500YMF-C PUHY-600YSMF-C, 650YSMF-C, 700YSMF-C, 750YSMF-C PUHY-P600YSMF-C, P650YSMF-C, P700YSMF-C, P750YSMF-C HEAD OFFICE MITSUBISHI DENKI BLDG. MARUNOUCHI TOKYO 100-0005 TELEX J24532 CABLE MELCO TOKYO Issued in May 2003 MEE02K140 Printed in Japan New publication effective Jan 2003 Specifications subject to change without notice.
Contents 1 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT ......................................... 1 [1] Storage of Piping Material ............................................. 2 [2] Piping Machining ........................................................... 3 [3] Brazing ........................................................................... 4 [4] Airtightness Test ............................................................. 5 [5] Vacuuming ......................................................
Safety precautions Before installation and electric work Before installing the unit, make sure you read all the “Safety precautions”. The “Saftey precautions” provide very important points regarding safety. Make sure you follow them. This equipment may not be applicable to EN61000-3-2: 1995 and EN61000-3-3: 1995. This equipment may have an adverse effect on equipment on the same electrical supply system. Please report to or take consent by the supply authority before connection to the system.
¡ PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT Caution Do not use the existing refrigerant piping. Use a vacuum pump with a reverse flow check valve. • • The old refrigerant and refrigerator oil in the existing piping contains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate. Do not use the following tools that have been used with conventional refrigerants.
[1] Storage of Piping Material (1) Storage location Store the pipes to be used indoors. (Warehouse at site or owner’s warehouse) Storing them outdoors may cause dirt, waste, or water to infiltrate. (2) Pipe sealing before storage Both ends of the pipes should be sealed until immediately before brazing. Wrap elbows and T’s in plastic bags for storage. * The new refrigerator oil is 10 times more hygroscopic than the conventional refrigerator oil (such as Suniso).
[2] Piping Machining Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections. Use only the necessary minimum quantity of oil ! Reason: 1. The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside. Notes: • Introducing a great quantity of mineral oil into the refrigerant circuit may also cause a compressor failure.
[3] Brazing No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt, etc.) does not enter the refrigerant circuit. Example : Inner state of brazed section When non-oxide brazing was not used When non-oxide brazing was used Items to be strictly observed : 1. Do not conduct refrigerant piping work outdoors on a rainy day. 2. Apply non-oxide brazing. 3.
[4] Airtightness Test No changes from the conventional method. Note that a refrigerant leakage detector for R22 cannot detect R407C leakage. Halide torch R22 leakage detector Items to be strictly observed : 1. Pressurize the equipment with nitrogen up to the design pressure and then judge the equipment’s airtightness, taking temperature variations into account. 2. When investigating leakage locations using a refrigerant, be sure to use R407C. 3. Ensure that R407C is in a liquid state when charging.
[6] Charging of Refrigerant R407C must be in a liquid state when charging, because it is a non-azeotropic refrigerant. For a cylinder with a syphon attached For a cylinder without a syphon attached Cylinder Cylinder Cylinder color identification R407C-Gray R410A-Pink Charged with liquid refrigerant Valve Valve Liquid Liquid Reasons : 1. R407C is a mixture of 3 refrigerants, each with a different evaporation temperature.
[1] Appearance of Components 1 Variable capacity unit Ambient temperature Sensor Heat Exchanger Accumlator Oil Separator Variable Capacity Compressor (No. 1 Compressor) Oil Equalization Pipe Crank Case Heater Constant Capacity Compressor (No.
2 Constant capacity unit Solenoid valve (SV3, PUHN-P-YMF-C only) Solenoid valve (SV2, PUHN-P-YMF-C only) Ambient temperature Sensor Heat exchanger Accumlator Controller box Four-way valve Service check-point (right; high pressure, left; low pressure) Gas ball valve Liquid ball valve Oil balance pipe Constant capacity compressor (No.
Controller Box RELAY board FANCON board (for MF3) Choke coil (L2) MAIN board Magnetic contactor (52C2) INV board SNB board Diode stack (DS) FANCON board (for MF2) G/A board Inteligent Power Module (IPM) Overload relay (51C2) Y-C board Magnetic contactor (52F) Noise filter (NF) Magnetic contactor (52C1) -9- Capacitor (C2, C3) (Smoothing capacitor)
MAIN board CNTR CNFC1 CNVCC4 Power source for control(5V) CNS1 CNS2 CN40 CN41 CNVCC3 Power Source for control 1-2 30V 1-3 30V 4-6 12V 5-6 5V CN51 Indication distance 3-4 Compressor ON/OFF 3-5 Trouble CNRS3 Serial transmission to INV board CN3D CN3S CN3N LD1 Service LED CN20 Power supply 3 L1 1N SW4 SW3 SW2 -10- SWU2 SWU1 SW1
INV board CNVDC 1-4 DC-560V CN15V2 Power supply for IPM control CNVCC4 Power supply (5V) CNL2 Choke coil CNVCC2 Power supply 1-2 30V, 1-3 30V 4-6 12V, 5-6 5V CNR CN52C Control for 52C CNDR2 Out put to G/A board CNFAN Control for MF1 CNTH CNAC2 Power Source 1 L2 3N 5G SW1 CNRS2 Serial transmission to MAIN board -11- CNACCT
FANCON board CNPOW CNFAN CNFC2 G/A board CNE CNDC1 CN15V1 CNIPM1 CNDR1 -12-
SNB board Y-C board -13-
RELAY board CN51C2 CNOUT2 CNRT2 CN52C2 CNCH CN52F -14-
• Constant capacity unit Controller Box Control board Terminal block TB3 transmission Terminal block TB1 powersource Transformer FANCON board Magnetic contactor (52C) Noise Filter (NF) Thermal overload relay (51C) Thyristor module (SCRM) Fuses (F1, F2) -15-
CONT board SWU2 SWU1 CNFC1 SW3 CNTR CN20 Power supply 1N 3 L1 -16- SW2 CNS1 M-NET transmission
FANCON board CNV CNW CNU CNFC2 -17-
TH6 -18- SV5b HEX1a HEX1b T10a TH5 HEX2a T10b HEX2b 21S4b SCC TH8 63H1 CV1 O/S CP4 No.1 Comp. LEV1 TH9 SV1 CP1 63HS CJ1 ST6 TH11 21S4a ST4 TH7 TH4 CJ3 TH12 CP3a SV6 63H2 CV2 ST7 SLEV ST5 SV4 ❇ ST8 No.2 Comp. SV22 SV32 TH3 CP3b ST3 ST9 SA MA CP2 TH2 CV3 CP5 CJ2 ❇ There are SV22,SV32 only for PUHY-500YMF-C.
HEXB2 SV5b HEXB1 -19- TH5 SV8 TH6 HEXF1 TH10a SV1 Comp1 ST6 CP4 TH9b CP2 TH2 ST7 TH7 TH4 TH12 ST4 ST8 SV32 Comp2 CP3a SV22 CJ3 SV6 SV4 63H2 CV2 SLEV ST5 LEV1 TH9a CP1 63HS CJ1 TH10c TH11 O/S 21S4a TH8 Drier 63H1 CV1 HEXF2 CP7 ✻ SV7 TH10b 21S4b SA TH3 ST3 ST9 CP3b CV3 CP5 MA ✻ 63LS CJ2 ❇ There are SV22,SV32 only for PUHY-P500YMF-C.
SV5b HEX1a TH5 HEX2b -20- TH6 HEX1 TH5 TH10a HEX2 SCC TH8 63H 21S4 SCC TH8 HEX2a CJ1 TH9 ST4 TH7 ST4 SV4 TH7 ST3 TH3 ST9 TH12 CP3a SV6 SV4 63H2 CJ3 CV2 TH4 ST5 LEV1 ST7 ST10 Comp1 TH11 SV1 CP1 CV1 ST6 O/S TH9 ST7 TH4 SLEV LEV1 ST10 CP4 Comp1 TH11 CP1 ST5 CJ1 63HS SV1 ST6 O/S 21S4a 63H1 CV1 TH10b 21S4b PUHN-200,250YMF-C TH6 HEX1b TH10a PUHY-400,500YMF-C ❇ ST8 SA SA ST3 ST9 CP3b ST8 TH3 SV32 Comp2 SV22 CP3 MA MA CP5 CV3 CV2
TH5 SV8 TH6 HEXF2 HEXF1 -21- TH6 HEX1 TH5 TH10a HEX2 PUHN-P200,250YMF-C SV5b HEXB2 HEXB1 TH10a TH8 63H TH11 21S4 TH8 SV1 ST6 CP1 ST5 LEV1 LEV1 TH9 ST7 ST10 Comp1 SV1 SV2 SV3 ST6 O/S CJ1 CV1 TH2 CP4 TH9b CP2 TH10c ST3 TH7 TH4 TH3 SV4 TH7 TH4 ST9 ST4 ST4 CJ3 TH12 CP3a SV6 SV4 63H2 CV2 SLEV ST5 TH9a ST7 CP1 CJ1 63HS Comp1 TH11 O/S 21S4a Drier 63H1 CV1 SV7 ✻ TH10b 21S4b ST8 ST8 Comp2 SV22 SV32 SA SA TH3 ST3 ST9 CP3b CP3 MA CV3 CP5
CH3 CH2 21S4a SV1 1 2 3 CH12 A2 A1 52F 1 2 3 CNCH (3P) 1 2 3 CN52F (3P) X03 X02 X01 CN51C2Relay (3P) 63H2 High pressure switch 63H1 SV6 SV5b SV4 21S4b T9 T10 CN52C2 (5P) A1 A2 1 52C2 2 52C2 3 4 14 13 5 51C2 95 96 *1 SV32 SV22 Crank case heater (Compressor) CH11 4 3 2 1 CNOUT2 (4P) 5 4 3 2 1 CNRT2 (5P) board T8 X11 *2 A B X12 TB7 M2 S M1 M2 123 6 5 4 3 2 1 X01 X10 X08 X09 X07 X06 SSR 4 3 1 2 X04 X05 X02 detection circuit detection circuit 12 12 FB4 12
*1 A1 A2 SV4 SV2 SV1 T1 13 52C1 14 CH11 51C 63H CH3 CH2 SV 5b T2 SV3 21 S4 52 C1 Inverter unit PE N S 1 2 CN35 3 (3P) 6 5 4 CN34 3 (6P) 2 1 3 2 CN39 1 (3P) 6 5 4 3 2 CN33 1 (6P) Box body Box body TH10b TH10a CN12 CN09 (2P) (2P) 12 12 5 4 CN52C1 3 (5P) 2 1 X07 3 2 CNCH11 1 (3P) CN46 (3P) 1 2 3 CN38 (3P) 1 2 3 TB3 M1 M2 PE Black L3 N Blue White L2 Power source L2 3N~ 380/400/415V 50Hz/60Hz L3 TH9 TH4 TH3 CN06 CN05 (4P) (2P) 12 1234 X06 Detection circuit Detecti
[4] Standard Operation Data 1 Cooling operation Outdoor unit Items PUHY-P400YMF-C PUHY-P500YMF-C 27.0/19.0 27.0/19.0 35.0/- 35.0/- Indoor DB/WB Ambient temp. Outdoor Quantity 5 5 5 5 Set Indoor unit Condition Quantity in operation - Model 125 125 100 Main pipe Piping Branch pipe Pressure LEV opening Outdoor unit 32 125 125 5 m 10 10 10 10 10 10 55 - Hi Hi 125 32 10 10 10 Hi Hi 55 Hi Hi Hi Hi Hi Hi Refrigerant volume kg 22.4 27.9 Total current A 27.
Outdoor unit Items Ambient temp. Indoor Condition PUHY-P600YSMF-C PUHY-P700YSMF-C Variable capacity unit Constant capacity unit PUHY-P400YMF-C PUHY-P500YMF-C PUHN-P200YMF-C PUHN-P200YMF-C 27/19.0 DB/WB Outdoor 35/- Quantity Indoor unit - 5 Set Quantity in operation 5 - Model 200/200/125/50/25 Main pipe Piping Branch pipe m 5 Total piping length Outdoor unit 30 - Indoor unit fan notch LEV opening Hi Refrigerant volume kg 28.9 Current A 41.5/39.5/38.
Outdoor unit Items Ambient temp. Indoor Condition PUHY-P650YSMF-C PUHY-P750YSMF-C Variable capacity unit Constant capacity unit PUHY-P400YMF-C PUHY-P500YMF-C PUHN-P250YMF-C PUHN-P250YMF-C 27/19.0 DB/WB Outdoor 35/- Quantity Indoor unit - 5 Set Quantity in operation 5 - Model 250/200/125/50/25 Main pipe Piping Branch pipe 5 m 5 Total piping length Outdoor unit Indoor unit fan notch 30 - LEV opening Hi Refrigerant volume kg 31.9 36.9 Current A 44.7/42.5/40.9 51.5/48.
Outdoor unit Items PUHY-400YMF-C PUHY-500YMF-C 27.0/19.0 27.0/19.0 35.0/- 35.0/- Indoor DB/WB Ambient temp. Outdoor Quantity 5 5 5 5 Set Indoor unit Condition Quantity in operation - Model 125 125 Main pipe Piping Branch pipe Outdoor unit Pressure LEV opening 63 32 125 125 5 m 10 10 - Hi Hi 125 32 10 10 10 10 10 10 10 10 Hi Hi 55 Hi Hi Hi Hi Hi Hi Refrigerant volume kg 22.4 27.9 Total current A 27.6/26.2/25.2 33.7/32.0/30.
Outdoor unit Items Ambient temp. Indoor Condition PUHY-600YSMF-C PUHY-700YSMF-C Variable capacity unit Constant capacity unit PUHY-400YMF-C PUHY-500YMF-C PUHN-200YMF-C PUHN-200YMF-C 27/19.0 DB/WB Outdoor 35/- Quantity Indoor unit - 5 Set Quantity in operation 5 - Model 200/200/125/50/25 Main pipe Piping Branch pipe m 5 Total piping length Outdoor unit Indoor unit fan notch 30 - LEV opening Hi Refrigerant volume kg 28.9 Current A 40.4/38.4/37.
Outdoor unit Items Ambient temp. Indoor Condition PUHY-650YSMF-C PUHY-750YSMF-C Variable capacity unit Constant capacity unit PUHY-400YMF-C PUHY-500YMF-C PUHN-250YMF-C PUHN-250YMF-C 27/19.0 DB/WB Outdoor 35/- Quantity Indoor unit - 5 Set Quantity in operation 5 - Model 250/200/125/50/25 Main pipe Piping Branch pipe 5 m 5 Total piping length Outdoor unit Indoor unit fan notch 30 LEV opening Hi - Refrigerant volume kg 31.9 36.9 Current A 43.6/41.4/39.9 50.5/48.0/46.
2 Heating operation Outdoor unit Items PUHY-P400YMF-C PUHY-P500YMF-C 20.0/- 20.0/- 7.0/6.0 7.0/6.0 5 5 5 5 Indoor Ambient temp. DB/WB Outdoor Quantity Set Indoor unit Condition Quantity in operation - Model 125 125 100 Main pipe Piping Branch pipe Outdoor unit Pressure LEV opening 32 125 125 m 10 10 10 10 10 10 10 10 Hi Hi 32 10 10 Hi Hi Hi Hi Hi Hi Hi Hi Refrigerant volume kg 22.4 27.7 Total current A 25.6/24.3/23.4 32.1/30.5/29.
Outdoor unit Items Ambient temp. Indoor Condition PUHY-P600YSMF-C PUHY-P700YSMF-C Variable capacity unit Constant capacity unit PUHY-P400YMF-C PUHY-P500YMF-C PUHN-P200YMF-C PUHN-P200YMF-C 20/- DB/WB Outdoor 7/6 Quantity Indoor unit - 5 Set Quantity in operation 5 - Model 200/200/125/50/25 Main pipe Piping Branch pipe m 5 Total piping length Outdoor unit Indoor unit fan notch 30 kg 28.9 Current A 37.0/35.2/33.
Outdoor unit Items Ambient temp. Indoor Condition PUHY-P650YSMF-C PUHY-P750YSMF-C Variable capacity unit Constant capacity unit PUHY-P400YMF-C PUHY-P500YMF-C PUHN-P250YMF-C PUHN-P250YMF-C 20/- DB/WB Outdoor 7/6 Quantity Indoor unit - 5 Set Quantity in operation 5 - Model 250/200/125/50/25 Main pipe Piping Branch pipe m 5 Total piping length Outdoor unit Indoor unit fan notch 30 kg 31.9 Current A 42.0/39.9/38.
Outdoor unit Items PUHY-400YMF-C PUHY-500YMF-C 20.0/- 20.0/- 7.0/6.0 7.0/6.0 5 5 5 5 Indoor Ambient temp. DB/WB Outdoor Quantity Set Quantity in operation Condition Indoor unit - Model 125 125 Main pipe Piping Branch pipe Outdoor unit Pressure LEV opening 63 32 125 125 m 10 10 10 10 10 10 10 Hi Hi 32 10 10 Hi Hi 55 Hi Hi Hi Hi Hi Hi Refrigerant volume kg 22.4 27.7 Total current A 25.1/23.9/23.0 31.5/29.9/28.
Outdoor unit Items Ambient temp. Indoor Condition PUHY-600YSMF-C PUHY-700YSMF-C Variable capacity unit Constant capacity unit PUHY-400YMF-C PUHY-500YMF-C PUHN-200YMF-C PUHN-200YMF-C 20/- DB/WB Outdoor 7/6 Quantity Indoor unit - 5 Set Quantity in operation 5 - Model 200/200/125/50/25 Main pipe Piping Branch pipe m 5 Total piping length Outdoor unit Indoor unit fan notch 30 - LEV opening Hi Refrigerant volume kg 28.9 Current A 36.5/34.7/33.
Outdoor unit Items Ambient temp. Indoor Condition PUHY-650YSMF-C PUHY-750YSMF-C Variable capacity unit Constant capacity unit PUHY-400YMF-C PUHY-500YMF-C PUHN-250YMF-C PUHN-250YMF-C 20/- DB/WB Outdoor 7/6 Quantity Indoor unit - 5 Set Quantity in operation 5 - Model 250/200/125/50/25 Main pipe Piping Branch pipe m 5 Total piping length Outdoor unit Indoor unit fan notch 30 - LEV opening Hi Refrigerant volume kg 31.9 Current A 40.0/38.0/36.
[5] Function of Dip SW and Rotary SW (1) Outdoor unit PUHY-P600·650·700·750YSMF-C. PUHY-P400·500YMF-C. 1 Variable capacity unit MAIN board Switch SWU 1 ~ 2 1~8 SW1 9 ~ 10 1 Function Unit Address Setting For self diagnosis/ operation monitoring Centralized Control Switch Deletion of connection information. Function According to Switch Operation When Off When On Set on 51 ~ 100 with the rotary switch.*2 Switch Set Timing When Off When On Before power is turned on.
2 Constant Capacity Unit Switch Function SWU 1 ~ 2 Unit Address Setting 1 2 3 4 Ignore liquid level errors SW2 5 6 7 Forced defrosting 8 9 10 1 2 3 6 7 8 9 Defrosting start temperature. Defrosting end temperature. Ignore oil-equalization circuit irregularities Models (Refrigerant) 10 Models (Capacity) 4 SW3 5 Function According to Switch Operation When Off When On Set on 51 ~ 100 with the rotary switch.*2 Ordinary control Ignore liquid level errors Ordinary control Start forced defrosting.
PUHY-600·650·700·750 YSMF-C. PUHY-400·500YMF-C. 1 Variable Capacity Unit MAIN board Switch Function SWU 1 ~ 2 1~8 SW1 9 ~ 10 1 2 SW2 3 Deletion of error history. 4 5 6 7 • Adjustment of Refrigerant Volume • Ignore liquid level errors Forced defrosting 8 9 10 Preserve suction pressure 1 SW3-2 Function Valid/ Invalid Indoor Unit Test Operation 2 3 4 SW3 Defrosting start temperature. Defrosting end temperature.
2 Constant Capacity Unit Switch Function SWU 1 ~ 2 Unit Address Setting 1 2 3 4 Ignore liquid level errors SW2 Ordinary control 5 6 7 Forced defrosting 8 9 10 1 2 3 0°C Defrosting start temperature. 7°C Defrosting end temperature. Ordinary control Ignore oil-equalization circuit irregularities R22 Model Models (Refrigerant) 4 SW3 Function According to Switch Operation When Off When On Set on 51 ~ 100 with the rotary switch.
(2) Indoor unit DIP SW1, 3 Switch SW1 Operation by SW OFF ON SW name 1 Room temp. sensor position Indoor unit inlet Built in remote controller 2 Clogged filter detect. None Provided 3 Filter duration 100h 2500h 4 OA intake Ineffective Effective 5 Remote display select. Fan output display Thermo. ON signal display 6 Humidifier control At stationary heating Always at heat. 7 Heating thermo. OFF airflow Very low speed Low speed 8 Heating thermo.
Setting of DIP SW4 Setting of DIP SW5 Model Circuit board used SW4 1 2 3 4 PMFY-P-VBM-A ON OFF ON OFF PLFY-P-VLMD-A – – – – PDFY-P20 ~ 80VM-A ON OFF ON OFF PLFY-P40 ~ 63VKM-A OFF OFF OFF ON PLFY-P80 ~ 125VKM-A ON OFF OFF ON PCFY-P-VGM-A Phase control OFF ON OFF ON PKFY-P-VGM-A OFF OFF ON ON PKFY-P-VAM-A – – – – OFF PEFY-P20 ~ 80VMM-A ON ON OFF PFFY-P-VLEM-A, P-VLRM-A OFF OFF OFF – PEFY-P20 ~ 32VML-A ON ON ON – OFF OFF OFF – – PEFY-P40 ~ 140V
£ TEST RUN [1] Before Test Run (1) Check points before test run 1 There should be neither refrigerant leak nor loose power source or transmission lines. 2 Confirm that the resistance between the power source terminal block and the ground exceeds 2MΩ by measuring it with a DC 500 V megger. Do not run if it is lower than 2MΩ. Note: Never apply the megger to the MAIN board. If applied, the MAIN board will be broken. Confirm that the Ball valve at gas and liquid, oil balance sides are fully opened.
(3) Check points for test run when mounting options Built-in optional parts Mounting of drain water lifting-up mechanism Content of test run Check point 1 Release connector of pump circuit, Local remote controller displays code No. check error detection by pouring water “2503”, and the mechanism stops. into drain pan water inlet. No overflow from drain pan. 2 After that, connect connector of circuit. Drain water comes out by operation of drain pump.
(5) Check points for system structure In the case of the PUHY-(P) 400·500 YMF-C Check points from installation work to test run. 246 57 1 2 3 4 Classification Portion Installation and piping Check item Trouble 1 Instruction for selecting combination of outdoor unit, and Not operate. indoor unit followed? (Maximum number of indoor units which can be connected, connecting model name, and total capacity.) 2 Connecting piping size of branch piping correct? Not cool (at cooling).
8 5 4 • • 3 1 2 3 3 Classification Portion Transmission line ¡ Limitation of transmission line length followed? For Erroneous operation, error stop. example, 200m or less (total length : 500m) at the farthest. ™ 1.25mm2 or more transmission line used? (Remote controller 10m or less 0.75mm2) Erroneous operation, error stop. £ 2-core cable used for transmission line? Error stop in case multiple-core cable is used.
In the case of the PUHY-(P) 600·650·700·750 YSMF-C Check points from installation work to test run. Outdoor unit 1 6 MAIN board 1 1 57 Switch Power source for outdoor unit 246 Switch 2 1234 1 2 3 4 5 Classification Installation and piping Power source wiring Portion Check item Trouble 1 Instruction for selecting combination of outdoor unit, and indoor unit followed? (Maximum number of indoor units which can be connected, connecting model name, and total capacity.
5 5 8 4 • 8 • 3 3 Trouble Classification Portion Transmission line 1 Limitation of transmission line length followed? For Erroneous operation, error stop. example, 200 m or less (total length: 500 m) at the farthest. 2 1.25 mm2 or more transmission line used? (Remote controller 10 m or less 0.75 mm2) Erroneous operation, error stop. 3 2-core cable used for transmission line? Error stop in case multiple-core cable is used.
[2] Test Run Method Operation procedure 1 Turn on universal power supply at least 12 hours before starting → Displaying “HO” on display panel for about two minutes 2 Press TEST RUN button twice → Displaying “TEST RUN’’ on display panel 3 Press 4 Press select button to change from cooling to heating operation, and vice versa → Make sure that warm or cold air is blowing out 5 Press 6 Press 7 Make sure that indoor unit fans operate normally 8 Make sure that interlocking devices such as ventilat
¢ GROUPING REGISTRATION OF INDOOR UNITS WITH M-NET REMOTE CONTROLLER (1) Switch function • The switch operation to register with the remote controller is shown below: CENTRALLY CONTROLLED 1Hr ˚C ON OFF DAILY AUTO OFF CLOCK FILTER REMAINDER CHECK CHECK MODE TEST RUN STAND BY DEFROST C Switch to assign ˚C indoor unit address ERROR CODE NOT AVAILABLE TEMP LIMIT TEMP.
(2) Attribute display of unit • At the group registration and the confirmation/deletion of registration/connection information, the type (attribute) of the unit is displayed with two English characters.
(3) Group registration of indoor unit 1) Registration method • Group registration of indoor unit ........................................................................ 1 The indoor unit to be controlled by a remote controller is registered on the remote controller. [Registration procedure] switch 1 With the remote controller under stopping or at the display of “HO”, continuously press the FILTER + (A + B) at the same time for 2 seconds to change to the registration mode. (See the figure below.
2) Method of retrieval/confirmation • Retrieval/confirmation of group registration information on indoor unit .............. 2 The address of the indoor unit being registered on the remote controller is displayed. [Operation procedure] 1 With the remote controller under stopping or at the display of “HO”, continuously press the 2 3 switch FILTER + ( A + B ) at the same time for 2 seconds to change to the registration mode. switch ( E ). (See figure below.
• Registered (Alternative display) TEMP ON/OFF CLOCK ON OFF FILTER CHECK TEST PAR-F27MEA 2 TIMER SET 1 +2 (Alternative display) 2 Press the switch for confirmation (E) 1 Set the address * • No registration Same display will appear when the unit of “007” is not existing. ˚C ERROR CODE OA UNIT ADDRESS NO 3) Method of deletion • Deletion of group registration information of indoor unit ......................................
4) Deletion of information on address not existing • Deletion of information on address not existing ...................................................∞ This operation is to be conducted when “6607” error (No ACK error) is displayed on the remote controller caused by the miss setting at test run, or due to the old memory remained at the alteration/modification of group composition, and the address not existing will be deleted.
∞ CONTROL [1] Control of Outdoor Unit [1]- 1 PUHY-P400·500 YMF-C (1) Initial processing • When turning on power source, initial processing of microcomputer is given top priority. • During initial processing, control processing corresponding to operation signal is suspended. The control processing is resumed after initial processing is completed. (Initial processing: Data processing in microcomputer and initial setting of each LEV opening, requiring approx. 2 minutes at the maximum.
• The operating temperature is 124˚C (No. 1 compressor) or 115˚C (No. 2 compressor). 4) Compressor frequency control 1 Ordinary control The ordinary control is performed after the following times have passed. • 30 seconds after the start of the compressor or 30 seconds after the completion of defrosting. • 30 seconds after frequency control operation by the discharge temperature or the high pressure.
2) Bypass solenoid valves (SV1, SV4) [Both SV1 and SV4 are on (open)] SV4 SV1 Item ON OFF ON OFF ON for 4 minutes — Compressor stopped during cooling or heating mode ON — After operation has been stopped ON for 3 minutes — During defrosting ((*1) in Fig below) ON Normally ON ON during oil recovery operation after continuous low-frequency compressor operation.
(5) Oil return control (Electronic expansion valve (SLEV)) • The amount of opening of the oil-return LEV (SLEV) is determined as follows: in cooling, by the operating capacity of the No. 1 compressor and the ambient temperature; in heating, by the operating capacity of the No. 1 compressor. • It is opened (64pulses) when both compressors are stopped and started for 10 minutes. (Upper limit of LEV opening is So = 388 pulse.) • SLEV = 0 when the No. 1 compressor is stopped.
(9) Judgement and control of refrigerant amount • Judge refrigerant amount by detecting refrigerant liquid surface accumulator. 1) Judgement of accumulator liquid level • Return refrigerant from accumulator liquid level detecting circuit to compressor inlet pipe, detect piping temperature, and judge liquid level.
(10) Refrigerant recovery control Refrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the unit under cooling mode and that with heating thermostat being turned off. 1) Start of refrigerant recovery 1 Refrigerant recovery is started when the two items below are fully satisfied. • 30 minutes has passed after finishing refrigerant recovery. • The level detector detects AL = 0 for 3 minutes continuously, or the discharge SH is high.
(12) Circulating composition sensor (CS circuit) P-YMF-C only • As shown in the drawing below; the CS circuit has the structure to bypass part of the gas discharged from the compressor through the capillary tube to the suction side of the compressor, exchange heat before and after the capillary tube, and produce two phase (gaseous and liquid) refrigerant at the capillary tube outlet.
(13) Control at initial starting • When the ambient temperature is low (5˚C or less in cooling and – 5˚C or less in heating), initial starting will be performed if the unit is started within 4 hours of the power being turned on. • The following initial start mode will be performed when the unit is started for the first time after the power has been turned on. Start of initial operation mode Step 1 • Only the No.1 compressor is operated (f 75 Hz) • Operation of the No.
3 End of initial operation mode minutes 10 minutes 5 minutes 30 minutes (Example 1) ON/OFF of No.1 compressor Note 1 ON/OFF of No.2 compressor Step 1 (Example 2) 30 minutes Step 2 Step 3 3 3 End of initial operation mode minutes minutes 10 minutes 10 minutes 5 minutes Note 1 ON/OFF of No.1 compressor Note 2 ON/OFF of No.
(14) Operation Mode 1) Operating modes of the indoor unit The following five modes can be set by the remote control. 1 2 3 4 5 Cooling mode Heating mode Dry mode Fan mode Stop mode 2) Operating modes of the outdoor unit The following are the 3 modes for the outdoor unit.
[1]-2 PUHY-400·500 YMF-C (1) Initial processing • When turning on power source, initial processing of microcomputer is given top priority. • During initial processing, control processing corresponding to operation signal is suspended. The control processing is resumed after initial processing is completed. (Initial processing: Data processing in microcomputer and initial setting of each LEV opening, requiring approx. 2 minutes at the maximum.
• The operating temperature is 124˚C. 4) Compressor frequency control 1 Ordinary control The ordinary control is performed after the following times have passed. • 30 seconds after the start of the compressor or 30 seconds after the completion of defrosting. • 30 seconds after frequency control operation by the discharge temperature or the high pressure.
2) Bypass solenoid valves (SV1, SV4) [Both SV1 and SV4 are on (open)] SV4 SV1 Item ON OFF ON OFF ON for 4 minutes — Compressor stopped during cooling or heating mode ON — After operation has been stopped ON for 3 minutes — During defrosting ((*1) in Fig below) ON Normally ON ON during oil recovery operation after continuous low-frequency compressor operation.
(5) Oil return control (Electronic expansion valve (SLEV)) • The amount of opening of the oil-return LEV (SLEV) is determined as follows: in cooling, by the operating capacity of the No. 1 compressor and the ambient temperature; in heating, by the operating capacity of the No. 1 compressor. • It is opened (64) when both compressors are stopped and started for 10 minutes. (Upper limit of LEV opening is So = 388 pulse.) • SLEV = 0 when the No. 1 compressor is stopped.
5) Change in number of operating indoor units while defrosting • If the number of indoor units changes while the outdoor unit is defrosting, the defrosting operation continues. Once defrosting has ended, control for changing the number of units is performed. • If the indoor unit is stopped while the outdoor unit is defrosting or if the thermostat is set to off, the defrosting operation continues. Once defrosting has ended, the unit is stopped.
(10) Refrigerant recovery control Refrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the unit under cooling mode and that with heating thermostat being turned off. 1) Start of refrigerant recovery 1 Refrigerant recovery is started when the two items below are fully satisfied. • 30 minutes has passed after finishing refrigerant recovery. • The level detector detects AL = 0 for 3 minutes continuously, or the discharge SH is high.
(12) Control at initial starting • When the ambient temperature is low (5˚C or less in cooling and – 5˚C or less in heating), initial starting will be performed if the unit is started within 4 hours of the power being turned on. • The following initial start mode will be performed when the unit is started for the first time after the power has been turned on. Start of initial operation mode Step 1 • Only the No.1 compressor is operated (f 75 Hz) • Operation of the No.
3 End of initial operation mode minutes 10 minutes 5 minutes 30 minutes (Example 1) ON/OFF of No.1 compressor Note 1 ON/OFF of No.2 compressor Step 1 (Example 2) 30 minutes Step 2 Step 3 3 3 End of initial operation mode minutes minutes 10 minutes 10 minutes 5 minutes Note 1 ON/OFF of No.1 compressor Note 2 ON/OFF of No.
(13) Operation Mode 1) Operating modes of the indoor unit The following five modes can be set by the remote control. 1 2 3 4 5 Cooling mode Heating mode Dry mode Fan mode Stop mode 2) Operating modes of the outdoor unit The following are the 3 modes for the outdoor unit.
[1]- 3 PUHY-P600·650·700·750 YSMF-C (1) Initial processing • When turning on power source, initial processing of microcomputer is given top priority. • During initial processing, control processing corresponding to operation signal is suspended. The control processing is resumed after initial processing is completed. (Initial processing: Data processing in microcomputer and initial setting of each LEV opening, requiring approx. 2 minutes at the maximum.
2 Switching No. 3 compressor from operation to stopping When the required performance is exceeded with the No. 1 and No. 2 variable capacity unit compressors and the constant capacity unit No. 3 compressor in operation, the No. 3 compressor will be stopped. 3) Pressure control • The upper limit value for the high pressure (Pd) has been set for each frequency. When this value is exceeded, the frequency is reduced every 30 seconds.
(4) Bypass - capacity control The solenoid valves have bypass valves (SV1, SV4 and SV6) that allow bypassing of the high pressure and low pressure sides and solenoid valves (SV22 and SV32) that control the capacity valve inside the compressor. Those operation are as follows.
2) Bypass solenoid valves (SV1, SV4) [Both SV1 and SV4 are on (open)] SV1 SV4 Item ON At compressor is started OFF ON OFF ON for 4 minutes — Compressor stopped during cooling or heating mode ON — After operation has been stopped ON for 3 minutes — During defrosting ((*1) in Fig below) ON Normally ON ON during oil recovery operation after continuous low-frequency compressor operation.
SV4 SV1 Item ON OFF ON OFF At compressor is started ON for 4 minutes — After thermostat reset or 3 minutes after startup ON for 4 minutes — Compressor stopped during cooling or heating mode ON for 3 minutes — After operation has been stopped ON for 3 minutes — ON during normal operation — During defrosting ((*1) in Fig below) When low pressure (63LS) has dropped When the high pressure (Pd) is risen up When the discharge temperature (Td) is risen up.
(5) Oil return control (Electronic expansion valve (SLEV); Variable Capacity Unit only) • The amount of opening of the oil-return LEV (SLEV) is determined as follows: in cooling, by the operating capacity of the No. 1 compressor and the ambient temperature; in heating, by the operating capacity of the No. 1 compressor. • It is opened (64) when both compressors are stopped and started for 10 minutes. (Upper limit of LEV opening is So = 388 pulse.) • SLEV = 0 when the No. 1 compressor is stopped.
5) Change in number of operating indoor units while defrosting • If the number of indoor units changes while the outdoor unit is defrosting, the defrosting operation continues. Once defrosting has ended, control for changing the number of units is performed. • If the indoor unit is stopped while the outdoor unit is defrosting or if the thermostat is set to off, the defrosting operation continues. Once defrosting has ended, the unit is stopped.
(10) Liquid Distribution Control (electronic expansion valve (LEV2) constant capacity unit only) • Liquid distribution control refers to the process by which liquid refrigerant returning from the constant and variable capacity units during heating is equally distributed, and the opening of the constant capacity unit LEV2 is adjusted so that there is no deficiency of liquid refrigerant in the accumulator of each unit.
(11) Liquid Refrigerant Correction Control The liquid refrigerant correction control adjusts the liquid refrigerant amounts between both accumulators in the unlikely event that the liquid refrigerant amount in both the constant and variable capacity unit accumulators should be insufficient, or if excessive amount of liquid refrigerant is returned to either accumulator. During this operation, Service LED No. 4 on the variable capacity unit will light up.
(12) Refrigerant recovery control Refrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the unit under cooling mode and that with heating thermostat being turned off. 1) Start of refrigerant recovery 1 Refrigerant recovery is started when the two items below are fully satisfied. • 30 minutes has passed after finishing refrigerant recovery.
(14) Control at initial starting • When the ambient temperature is low (5˚C or less in cooling and – 5˚C or less in heating), initial starting will not be performed even if the unit is started within 4 hours of the power being turned on. • The following initial start mode will be performed when the unit is started for the first time after the power has been turned on.
For steps 1 - 3 3 End of initial operation mode minutes 10 minutes 5 minutes (Example 1) 30 minutes ON/OFF of No.1 compressor Note 1 ON/OFF of No.2 compressor Step 1 (Example 2) 30 minutes Step 2 Step 3 3 3 End of initial operation mode minutes minutes 10 minutes 10 minutes 5 minutes Note 1 ON/OFF of No.1 compressor Note 2 ON/OFF of No.
For steps 4 - 6 (Example 1) ON/OFF of No.1 compressor 5 minutes End of initial operation mode 10 minutes A-minute (A-minute Definitions) Operation Frequency Level (Hz) A Constant capacity unit power on 7 hours. – 0 minute 63LS 4.2 K 217 (For variable capacity unit model 500) 183 (For variable capacity unit model 400) 10 minutes 63LS 3.8 K 100 63LS 1.5 K 100 Conditions ON/OFF of No.2 compressor ON/OFF of No.3 compressor Step 4 Step 5 Step 6 Note 4 Other (Example 2) ON/OFF of No.
(Example 4) ON/OFF of No.1 compressor 5 Less than minutes 10 minutes 5 Less than minutes 10 minutes 5 minutes A-minute End of initial operation mode 10 minutes ON/OFF of No.2 compressor Note 3 ON/OFF of No.3 compressor Step 4 Step 6 Note 4 Step 5 Step 6 Note 4 Step 5 Step 4 Step 5 Step 4 Step 6 Note 4 Note 1: If Step 4 is interrupted (compressor stopped by thermostat OFF or regular stop), Step 4 will be redone at restart.
(16) Emergency response operating mode The emergency operation mode is a mode in which the unit is run in an emergency to respond to the trouble when the compressors (No. 1, No. 2) break down, making it possible to carry out a trouble reset using the remote control. 1) Starting the Emergency Operation Mode 1 Trouble occurs (Display the trouble code root and trouble code on the remote control). 2 Carry out trouble reset with the remote control.
2) Terminating Emergency Response Operation Mode (Termination Conditions) When one of the following conditions is met, emergency operation mode is terminated. 1 Cumulative compressor operation time in the cooling mode exceeds 4 hours. 2 Cumulative compressor operation time in the heating mode exceeds 2 hours. 3 Emergency operation mode trouble detected.
[1]-4 PUHY-600·650·700·750 YSMF-C (1) Initial processing • When turning on power source, initial processing of microcomputer is given top priority. • During initial processing, control processing corresponding to operation signal is suspended. The control processing is resumed after initial processing is completed. (Initial processing: Data processing in microcomputer and initial setting of each LEV opening, requiring approx. 2 minutes at the maximum.
2 Switching No. 3 compressor from operation to stopping When the required performance is exceeded with the No. 1 and No. 2 variable capacity unit compressors and the constant capacity unit No. 3 compressor in operation, the No. 3 compressor will be stopped. 3) Pressure control • The upper limit value for the high pressure (Pd) has been set for each frequency. When this value is exceeded, the frequency is reduced every 30 seconds.
(4) Bypass - capacity control The solenoid valves have bypass valves (SV1, SV4 and SV6) that allow bypassing of the high pressure and low pressure sides and solenoid valves (SV22 and SV32) that control the capacity valve inside the compressor. Those operation are as follows. SV1 SV4 : Installed SV6 : Not Installed SV22, SV32 Variable Capacity Unit Constant Capacity Unit Use Maintenance of high-pressure/low-pressure, discharge temperature Controls the compressors’ internal volume control valve.
2) Bypass solenoid valves (SV1, SV4) [Both SV1 and SV4 are on (open)] SV1 SV4 Item ON At compressor is started OFF ON OFF ON for 4 minutes — Compressor stopped during cooling or heating mode ON — After operation has been stopped ON for 3 minutes — During defrosting ((*1) in Fig below) ON Normally ON ON during oil recovery operation after continuous low-frequency compressor operation.
SV4 SV1 Item ON OFF ON OFF At compressor is started ON for 4 minutes — After thermostat reset or 3 minutes after startup ON for 4 minutes — Compressor stopped during cooling or heating mode ON for 3 minutes — After operation has been stopped ON for 3 minutes — ON during normal operation — During defrosting ((*1) in Fig below) Low pressure (63LS) < 0.098 MPa When low pressure (63LS) has dropped 2.
(5) Oil return control (Electronic expansion valve (SLEV); Variable Capacity Unit only) • The amount of opening of the oil-return LEV (SLEV) is determined as follows: in cooling, by the operating capacity of the No. 1 compressor and the ambient temperature; in heating, by the operating capacity of the No. 1 compressor. • It is opened (64) when both compressors are stopped and started for 10 minutes. (Upper limit of LEV opening is So = 388 pulse.) • SLEV = 0 when the No. 1 compressor is stopped.
5) Change in number of operating indoor units while defrosting • If the number of indoor units changes while the outdoor unit is defrosting, the defrosting operation continues. Once defrosting has ended, control for changing the number of units is performed. • If the indoor unit is stopped while the outdoor unit is defrosting or if the thermostat is set to off, the defrosting operation continues. Once defrosting has ended, the unit is stopped.
(10) Liquid Distribution Control (electronic expansion valve (LEV2) constant capacity unit only) • Liquid distribution control refers to the process by which liquid refrigerant returning from the constant and variable capacity units during heating is equally distributed, and the opening of the constant capacity unit LEV2 is adjusted so that there is no deficiency of liquid refrigerant in the accumulator of each unit.
(11) Liquid Refrigerant Correction Control The liquid refrigerant correction control adjusts the liquid refrigerant amounts between both accumulators in the unlikely event that the liquid refrigerant amount in both the constant and variable capacity unit accumulators should be insufficient, or if and excessive amount of liquid refrigerant is returned from either accumulator. During this operation, Service LED No. 4 on the variable capacity unit will light up.
(12) Refrigerant recovery control Refrigerant recovery is conducted to prevent refrigerant from accumulating in the stopped unit (fan unit), the unit under cooling mode and that with heating thermostat being turned off. 1) Start of refrigerant recovery 1 Refrigerant recovery is started when the two items below are fully satisfied. • 30 minutes has passed after finishing refrigerant recovery.
(14) Control at initial starting • When the ambient temperature is low (5˚C or less in cooling and – 5˚C or less in heating), initial starting will not be performed even if the unit is started within 4 hours of the power being turned on. • The following initial start mode will be performed when the unit is started for the first time after the power has been turned on.
For steps 1 - 3 (Example 1) 3 End of initial operation mode minutes 10 minutes 5 minutes 30 minutes ON/OFF of No.1 compressor Note 1 ON/OFF of No.2 compressor Step 1 (Example 2) 30 minutes Step 2 Step 3 3 3 End of initial operation mode minutes minutes 10 minutes 10 minutes 5 minutes Note 1 ON/OFF of No.1 compressor Note 2 ON/OFF of No.
For steps 4 - 6 (Example 1) ON/OFF of No.1 compressor 5 minutes End of initial operation mode 10 minutes A-minute (A-minute Definitions) Operation Frequency Level (Hz) A Constant capacity unit power on 7 hours. – 0 minute [ET or EPT-{(F-22)/22}] 1˚C 217 (For variable capacity unit model 500) 162 (For variable capacity unit model 400) 10 minutes Conditions ON/OFF of No.2 compressor ON/OFF of No.3 compressor Step 4 [ET or EPT-{(F-22)/22}] – 1.
(Example 4) ON/OFF of No.1 compressor 5 Less than minutes 10 minutes 5 Less than minutes 10 minutes 5 minutes A-minute End of initial operation mode 10 minutes ON/OFF of No.2 compressor Note 3 ON/OFF of No.3 compressor Step 4 Step 6 Step 5 Step 6 Step 5 Step 4 Step 5 Step 4 Step 6 Note 1: If Step 4 is interrupted (compressor stopped by thermostat OFF or regular stop), Step 4 will be redone at restart.
(16) Emergency response operating mode The emergency operation mode is a mode in which the unit is run in an emergency to respond to the trouble when the compressors (No. 1, No. 2) break down, making it possible to carry out a trouble reset using the remote control. 1) Starting the Emergency Operation Mode 1 Trouble occurs (Display the trouble code root and trouble code on the remote control). 2 Carry out trouble reset with the remote control.
2) Terminating Emergency Response Operation Mode (Termination Conditions) When one of the following conditions is met, emergency operation mode is terminated. 1 Cumulative compressor operation time in the cooling mode exceeds 4 hours. 2 Cumulative compressor operation time in the heating mode exceeds 2 hours. 3 Emergency operation mode trouble detected.
[2] Operation Flow Chart (1) Outdoor unit (Cooling, heating modes) Start NO Normal operations Trouble observed Stop Breaker turned on YES “HO” blinks on the remote controller Note: 1 NO Set indoor address No. to remote controller YES NO Oil return LEV, SC coil LEV fully closed 2 Operation command YES Fan Variable capacity unit 1. 52C1, 52C2 OFF 2. Inverter output 0 Hz 3. Outdoor fan Stop 4. All solenoid valve OFF 5. LEV1, SLEV full closed.
(2) Indoor unit (Cooling, heating, dry, and fan modes) Start Breaker turned on Normal operations Trouble observed Stop NO YES Operation SW turned on YES NO Note: 1 1. Protection function self-holding cancelled. 2. Indoor unit LEV full closed.
(3) Cooling operation Cooling operation Normal operations Test run Stop 4-way valve OFF Indoor unit fan operations Test run start Note: 1 YES NO NO Thermostat ON YES YES 3-minute restart prevention NO Variable capacity unit 1. Inverter output 0 Hz 2. Indoor unit LEV, SLEV, LEV1 full closed 3. Solenoid valve OFF 4. Outdoor unit fan stop 5. 52C2 OFF 6. F = 0 after 6 minutes 52C1 OFF Variable capacity unit 1. Inverter frequency level control 2. Indoor LEV, SLEV, LEV1 control 3.
(4) Heating operation Normal operations Defrosting operations Stop Test run Heating operation Note: 1 Defrosting operation During constant capacity unit operation or Operation over 30 minutes before stopping the constant capacity unit. 4-way valve ON NO YES YES Test run start Variable capacity unit 4-way valve OFF Constant capacity unit 4-way valve ON Variable capacity unit 4-way valve OFF Constant capacity unit 4-way valve ON 1. Indoor unit fan stop. 2. Indoor unit LEV full open. 1.
(5) Dry operation Dry operations Normal operations Thermostat ON Stop 4-way valve OFF Test run start YES Note: 2 Thermostat ON NO NO Inlet temp. 18˚C YES Note: 1 Variable capacity unit 1. Inverter output 0 Hz 2. Indoor unit LEV, SLEV, LEV1 full closed 3. Solenoid valve OFF 4. Outdoor unit fan stop 5. 52C2 OFF 6. F = 0 after 6 minutes 52C1 OFF 1. Outdoor unit (Compressor) intermittent operations 2.
[3] List of Major Component Functions Code (Function) Electronic LEV expansion valve Name Product code Application 1 Adjustment of super heat of heat exchanger outlet port of indoor unit during cooling. 2 Adjustment of sub-cool of heat exchanger outlet port of indoor unit during heating. Specification Inspection method DC 12 V Amount of opening of the stepping motor drive valve 60 to 2000 pulse. (Gear Type) Perform a continuity check using a tester. Conductivity among white, red and orange.
Name Code (Function) Outdoor unit (Variable capacity unit) Thermistor TH3 TH4 (Liquid level detection) Product code Application Specification Detects liquid level of refrigerant inside R0 = 15 kΩ accumulator using the differences B1/80 = 3460 Rt = among TH2, TH3, TH4. 15exp{3460( TH5 (Liquid pipe temperature) 1 Frequency control. 2 Controls defrosting during heating. TH6 (Outdoor temperature) 1 Detects the outdoor air temperature.
Name Outdoor unit (Variable capacity unit) Solenoid vallve Code (Function) SV5b heat exchanger capacity control SV6 dischargesuction bypass SV7b heat exchanger capacity control (P400,500 only) SV8b heat exchanger capacity control (P400,500 only) Product code Application Specification Controls heat exchanger capacity of AC 220 to 240 V outdoor unit. Close: conducting Open : not conducting Conductivity test using tester. Evaporation of liquid refrigerant inside AC 220 to 240 V Open : conducting MC2.
Name Code (Function) Thermistor TH6 (Outdoor temperature) Outdoor unit (Constant capacity unit) Solenoid Valve Product code Application R0 = 15 kΩ B0/80 = 3460 control, and oil-return LEV opening Rt = settings. 15exp{3460( Controls LEV1 using temperature differences among TH5, TH7, TH8, and TH9. TH10a Heat exchanger Gas temperature Perform LEV2 control by comparing the temperature difference with low pressure saturation temperature.
[4] Resistance of Temperature Sensor Thermistor for low temperature Thermistor Ro= 15kΩ ± 3% (TH3 ~ 9a,9b,10a,10b) 1 1 )} Rt = 15exp {3460 ( 273+t Thermistor R120 = 7.465kΩ ± 2% (TH11,12,10c) 1 1 Rt = 7.
§ REFRIGERANT AMOUNT ADJUSTMENT By clarifying the relationship between the refrigerant amount and operating characterstics, conduct service activities such as decision on the amount and adjustment of refrigerant on the market. [1] Operating Characteristics and Refrigerant Amount The followings are operating characteristics and refrigerant amount which draw special attention.
(2) Refrigerant Volume 1) Checking the Operating Condition Operate all the indoor units in cooling or in heating, checking the discharge temperature, sub-cooling, low pressure saturation temperature, inlet temperature, shell bottom temperature, fluid level, fluid step, etc. and render an overall judgment. Note: Depending on the operating state, AL = 0 does not mean that there is insufficient refrigerant. 1 2 3 4 5 6 Condition Discharge temperature is high.
Example PUHY-P600YSMF-C ø15.88 (10 m) ø12.7 (10 m) ø12.7 (20 m) ø12.7 (3 m) ø15.88 (1 m) ø19.05 (30 m) ø12.7 (10 m) ø9.52 (10 m) Model 80 ø9.52 (10 m) Model 125 ø6.35 (10 m) Model 32 Each distribution pipe carries liquid. ø19.05: 30 m ø15.88: 1 m + 10 m ø12.7 : 3 m + 10 m + 20 m + 10 m ø9.52 : 10 m + 10 m + 20 m + 10 m + 10 m + 10 m ø6.35 : 10 m ø9.52 (20 m) Model 125 ø9.52 (10 m) Model 80 ø9.52 (10 m) Model 63 ø9.
[3] Refrigerant Volume Adjustment Mode Operation (1) Procedure Depending on the operating conditions, it may be necessary either to charge with supplementary refrigerant, or to drain out some, but if such a case arises, please follow the procedure given below. 1 Switching the function select switch (SW2-4), located on the outdoor unit’s control board, ON starts refrigerant volume adjustment mode operation and the following operation occurs. (Refrigerant recovery mode and oil recovery mode will be invalid.
(2) Refrigerant adjustment in cooling season (Flow chart) PUHY-(P) 400·500 YMF-C Start adjustment YES NO Set all indoor units to test run mode and start cooling. Is the liquid level of the accumulator 0 or 1, 6 minutes or more after starting? Use the low-pressure service port to drain out refrigerant a little at a time. Is TH1 115°C ? Use the low-pressure service port to charge the refrigerant a little at a time.
PUHY-(P) 600·650·700·750 YSMF-C YES NO Start adjustment AL1: Variable capacity unit liquid level AL AL2: Constant capacity unit liquid level AL All indoor units begin cooling operations in Note: 3 test run mode. Both constant and variable capacity units are operated. Over 6 minutes have passed since variable and constant capacity unit startup. AL1 and AL2 are 0 or 1. Use the low-pressure service port of AL ≠ 0 or 1 unit to drain out refrigerant a little at a time.
(3) Refrigerant adjustment in heating season (Flow chart) PUHY-(P) 400·500 YMF-C Start Adjustment YES 1 NO Run all the indoor units in the heating condition in the test run mode. Note: 1 AL = 1 or 2 2 3 Note: 2 Note: 3 Is the accumulator's liquid level AL = 1? 4 Has the operating condition stabilized? Note: 3 Is the accumulator's liquid level AL = 0? 5 Note: 4 Is the accumulator's liquid level AL=0 when just one indoor unit is running. AL = 2 Adjustment is not necessary.
-123- Finish charging with refrigerant. Did the liquid level change from AL = 0 to AL =1? Charge with small amounts of refrigerant at a time through the variable capacity unit's low pressure service port. Adjustment completed Turn all SW1 switches OFF AL1 = 2 And AL2 = 2? Readjust After adjusting the refrigerant volume, run for 5 minutes and judge the AL. Turn on self-diagnosis switches (SW1) No. 7 switching to the mode in which the liquid level is displayed by the LED.
Note: 1 If there are any units which are not operating, it will cause refrigerant to accumulate, so operate all the indoor units. Also, in order to prevent stable operation from being disrupted by the thermostat going OFF, set the trial operation mode. Note: 2 If the high pressure is stabilized, it is safe to judge that the operation condition is stable. Judge that operation is stabilized or not stabilized by whether the compressor starts after 3 or more minutes have passed.
¶ TROUBLESHOOTING [1] Principal Parts Pressure Sensor (1) Judging Failure 1) Check for failure by comparing the sensing pressure according to the high pressure/low pressure pressure sensor and the pressure gauge pressure. Turn on switches 1, 3, 5, 6 (High) and 2, 4, 5, 6 (Low) of the digital display select switch (SW1) as shown below, and the sensor pressure of the high pressure/low pressure sensors is displayed digitally by the light emitting diode LD1.
Solenoid Valve Variable Capacity Unit Valves (SV1, SV22, SV32, SV4, 21S4a, 21S4b, SV5b, SV6, SV7, SV8) Check if the control board’s output signals and the operation of the solenoid valves match. Setting the self-diagnosis switch (SW1) as shown in the figure below causes the ON signal of each relay to be output to the LED’s. Each LED shows whether the relays for the following parts are ON or OFF. When a LED lights up, it indicates that the relay is ON.
6) SV6 When No. 2 compressor is operating and No. 2 compressor is stopped, the main SV6 will be set to ON, making it possible to confirm operation by monitoring the LED display and listening to the operating sound. Note that it may be set to OFF if the outlet temperature (TH11) exceeds 120°C . 7) 21S4a This 4-way switching valve operates as follows.
2) SV2, 3 (Full-load / Un-load switching valve) PUHN-P-YMF-C only 1 It starts in un-load in the initial start mode and during defrosting, and starts in full-load at all other times. 2 It is possible to determine whether or not the compressors are switching from unload to full load by check the changes in amperage of the compressor at the moment of switching. The amperage under full load will be approximately 30 to 40 % more than operation under unload.
Outdoor LEV The valve percentage opening changes in proportion to the number of pulses.
2 LEV2 Pulse Signal Output and Valve Operation Output (Phase) Output State No. 1 2 3 4 ø1 ON OFF OFF ON ø2 ON ON OFF OFF ø3 OFF ON ON OFF ø4 OFF OFF ON ON Output pulses change in the following orders when the Valve is Closed 1 → 2 → 3 → 4 → 1 Valve is Open 4→3→2→1→4 *1. When the LEV opening does not change, all output phases are OFF. 2. When the output opens a phase and stays ON, the motor will not run smoothly and will clack and vibrate. 3.
Judgment methods and likely failure mode Caution: The specifications of the outdoor unit (outdoor LEV) and indoor unit (indoor LEV) differ. For this reason, there are cases where the treatment contents differ, so follow the treatment specified for the appropriate LEV as indicated in the right column. Failure Mode Microcomputer driver circuit failure Judgment Method 1 Treatment Disconnect the control board connector and connect the check LED as shown in the figure below.
Outdoor LEV (SLEV) Coil Removal Procedure (configuration) As shown in the figure, the outdoor LEV is made in such a way that the coils and the body can be separated. Coils Body Stopper Indentation for Stopper (12 places around the circumference) Lead Wires Fasten the body tightly at the bottom (Part A in the figure) so that the body will not move, then pull out the coils toward the top.
Intelligent Power Module (IPM) Measure resistances between each terminal of IPM with tester, and use the results for troubleshooting. Specified resistance value is dependent on tester type to be used for resistance measurement, because diode inside IPM has non-linearity, thus difference of impedance and voltage in tester being influential.
(2) Trouble and remedy of remote controller (In the case of MA remote controller) 1 Phenomena Factors Check method and handling If pushing the remote control operation SW does not make a sound such as beep, with the crystal display lamp out, and no operate is possible. 1) Power supply from transformers is not turned on in Indoor Unit. 1 The original power supply of Indoor Unit is not turned on. 2 The connector (CND. CNT, CN3T) on the controller board in the room has come off.
Phenomena 4 Factors “HO” indication on the remote controller is not lit, and the ON/OFF switch does not work. 1) The M-NET transmission power supply form the outdoor unit is not supplied. 1 The original power supply of Indoor Unit is not turned on. 2 The connector on the controller board in Indoor Unit is removed. Main board ----CNS1, CNVCC3 INV board----CNAC2, CNVCC1, CNL2 3 Power supply circuit defects of the outdoor unit.
(In the case of M-NET remote controller) Symptom 1 Despite pressing of remote controller ON/OFF switch, operation does not start and there is no electronic sound. (No powering signal appears.) Cause Checking method & countermeasure 1) M-NET transmission power source is not supplied a) Check transmission terminal block of from outdoor unit. remote controller for voltage. i) In case of 17 ~ 30V 1 Main power source of outdoor unit is not connected.
3 Symptom Cause “HO” display on remote controller does not disappear and ON/OFF switch is ineffective. (Without using MELANS) 1) Outdoor unit address is set to “00” 2) Erroneous address. 1 Address setting of indoor unit to be coupled with remote controller incorrect. (Indoor unit = remote controller - 100.) 2 Address setting of remote controller incorrect. (Remote controller = indoor unit + 100.) 3) Faulty wiring of transmission terminal block TB5 of indoor unit in the same group with remote controller.
Symptom 4 “88” appears on remote controller at registration and access remote controller Cause Checking method & countermeasure [Generates at registration and confirmation] 1) Erroneous address of unit to be coupled. 2) Disconnection of transmission line of unit to be coupled (No connection). 3) Faulty circuit board of unit to be coupled. 4) Installation miss of transmission line. a) Confirm the address of unit to be coupled. b) Check the connection of transmission line.
Transmission Power Circuit (30 V) Check Procedure If “ ” is not displayed by the remote control, investigate the points of the trouble by the following procedure and correct it. No. Check Item 1 Disconnect the transmission line from TB3 and check the TB3 voltage. Judgment DC24~30 V Response Check the transmission line for the following, and correct any defects. Broken wire, short circuit, grounding, faulty contact. Except the above-mentioned Go to No.
(3) Investigation of transmission wave shape/noise Control is performed by exchanging signals between outdoor unit, indoor unit and remote controller by M-NET transmission. If noise should enter into the transmission line, the normal transmission will be hindered causing erroneous operation. 1) Symptom caused by the noise entered into transmission line Cause Erroneous operation Noise entered into transmission line 2) Error code Signal changes and is misjudged as the signal of other address.
3) Checking and measures to be taken (a) Measures against noise Check the items below when noise can be confirmed on wave shape or the error code in the item 1) is generated. Items to be checked 1 Wiring of transmission and power lines in Checking for wiring method crossing. 2 Wiring of transmission line with that of other system in bundle. 3 Use of shield wire for transmission line (for both indoor unit control and centralized control).
4) Treatment of Inverter and Compressor Troubles If the compressor does not work when error codes 4240, 4250, 4340 or 4350 are detected, determine the point of malfunction by following the steps in the LED monitor display and countermeasures depending on the check code displayed, then perform the procedures below. No. Check Item How many hours was the power kept on before 1 operation? Symptoms 1 If it was kept on for 12 hours or When it is restarted, does the trouble reappear? Go to [2].
5) Treatment of Fan Motor Related Troubles Condition Possible Cause Check Method and Treatment 1 The fan motor will not run 1) The power supply voltage If there is an open phase condition before the breaker, after for 20 minutes or longer when the AK value is 10%. (When the MAIN board’s SW1 is set as shown below, the AK value is displayed by the service LED.) is abnormal. the breaker or at the power supply terminal blocks TB1A or TB1B. Correct the connections.
6) Troubleshooting at breaker tripping Check items Measures to be taken The breaker’s capacity should be correct to “System design” in data book. 1 Check the breaker capacity. 2 Check for a short circuit or grounding in the electrical system other than the inverter. Correct any defects. 3 Check the resistance between terminals on the terminal block TB1A for power source. Check each part inside the inverter power circuit (resistance, megohm or the like).
7) Individual Parts Failure Judgment Methods. Part Name Judgment Method Diode Stack (DS) Refer to “Judging Diode Stack Failure.” Intelligent Power Module(IPM) Refer to “Judging IPM Failure.” Electromagnetic Contactor (52C) Measure the resistance value at each terminal. A2 A1 1/L1 3/L2 5/L3 Check Location Judgment Value A1-A2 2/T1 4/T2 6/T3 0.1k~1.3k 1/L1-2/T1 3/L2-4/T2 5/L3-6/T3 Rush Current Protection Resistor (R1, 5) Measure the resistance between terminals: 4.5k~5.
Motor (Compressor) Red White Black IPM U V W N Black P Red G/A board -146- Capacitor (C2,C3)
8) Compressor Replacement Procedure When replacing a compressor, please proceed by the following procedure. • When replacing the No. 1 compressor (variable capacity compressor), begin the replacement work after judging whether the trouble is a compressor breakdown or an inverter breakdown.
(13) Solder the discharge piping, suction piping, volume control valve piping (All but model PUHY-(P)400YMF-C) and process piping (All but model PUHY-(P)400YMF-C). (14) Attach the oil equalization pipe to both compressors. In the case of the PUHY-P-YMF-C, replace the dryer with a new one. After replacing the dryer, do not leave the refrigerant circuit in the open state for a long period of time.
(4) Constant Capacity Unit Observe the following notes when changing the compressor (1) Make sure the main power supply is turned off. If the reason for the compressor replacement is faulty insulation resistance, if the insulation resistance (Megacheck) is 1 M or greater, it is possible that it has dropped due to the dormancy of the refrigerant to the compressor, so after turning on the power for 12 hours with a belt heater heating, turn off the power and check the insulation resistance again.
Check Code List Check Code 0403 Check Content Serial transmission abnormality 0900 Trial operation 1102 Discharge temperature abnormality 1111 Low pressure saturation temperature sensor abnormality (TH2) 1112 Low pressure saturation 1113 temperature abnormality Liquid level sensing temperature sensor abnormality (TH3) 1301 Low pressure abnormality (OC) Liquid level sensing temperature sensor abnormality (TH4) 1302 High pressure abnormality (OC) 1500 Overcharged refrigerant abnormality 150
Check Code Check Content 6606 Communications with transmission processor abnormality 6607 No ACK abnormality 6608 No response abnormality 6831 MA communication, No-reception error 6832 MA communication, Synchronization recovery error 6833 MA communication, Transmission/reception handware error 6834 MA communication, Start bit error 7100 Total capacity abnormality 7101 Capacity code abnormality 7102 Connected unit count over 7105 Address setting abnormality 7106 Characteristics setti
[2] Self-diagnosis and Countermeasures Depending on the Check Code Displayed (1) Mechanical Checking code 0403 Serial transmission abnormality Meaning, detecting method Cause Checking method & Countermeasure If serial transmission cannot be 1) Wiring is defective. established between the MAIN and INV boards. Check 1, the connections, 2, contact at the connectors and 3, for broken wires in the following wiring.
Checking code 1111 Cause Low 1. When saturation temperature 1) Gas leak, Gas shortage. pressure sensor (TH2) or liquid level desaturation tecting temperature sensors 2) Insufficient load operations. tempera(TH3, TH4) detects -40˚C or ture less (the first time) during opsensor erations, outdoor unit stops 3) Poor operations of indoor LEV. abnormalonce, mode is changed to re- 4) Poor operations of Outdoor ity (TH2) start mode after 3 minutes, then LEV1: cooding the outdoor unit restarts.
Checking code Meaning, detecting method 1301 Low pressure When starting from the stop mode abnoramlity for the first time, (if at the start of bind power transmission, the end of bind power transmission, and in the mode when the thermostat goes OFF immediately after the remote control goes ON, the following compressor start time is included), if the low pressure pressure sensor before starting is at 0.098MPa,operation stops immediately.
Checking code Meaning, detecting method 1302 High pressure When press. sensor detects abnoramlity 2 0.098MPa or less just before (Outdoor unit) starting of operation, erro stop is observed with code No. “1302” displayed. 1500 Overcharged refrigerant abnormality 1. When discharge superheart 10 deg is keeping for 10 minutes or discharge superheat 20 deg for 15 minutes, outdoor unit stops once, and after 3 minutes, the unit restarts. For 60 minutes after unit stopped is intermittent fault check period.
Checking code Meaning, detecting method Cause Checking method & Countermeasure 1505 Suction pressure abnormality (Variable capacity unit) • R22 refrigerant models: 1 If it has been determined by the high pressure pressure, outlet temperature and low pressure saturation temperature that the suction pressure has approached 0 MPa during compressor operation, back-up control is performed by the gas bypass.
Checking code Meaning, detecting method Cause Checking method & Countermeasure 2500 Leakage (water) When drain sensor detects flood- 1) Water leak due to humidifier or the Check water leaking of humidifier abnormality like in trouble. and clogging of drain pan. ing during drain pump OFF. 2502 Drain pump abnormality When indirect heater of drain sen- 1) Drain sensor sinks in water be- Check operations of drain pump.
Checking code Meaning, detecting method Cause Checking method & Countermeasure 4106 Power off abnormality (Variable capacity unit) 1 Cannot operate because the constant capacity unit is disconnected from the power source. 1) Power cord problem Measure the voltage in each part of (constant capacity unit is disconthe constant capacity unit nected from the power source) 1 Power source terminal block(TB1) 2) Power board fuse (F01, F02) is 2 Power board (CN20) blown.
Checking code Meaning, detecting method Cause 4200 VDC 1 If VDC 304 V is detected just 1) Power supply voltage is abnorsensor/circuit before the inverter starts. mal. abnormality 2 If VDC 750 V is detected just before starting of and during (Variable operation of the inverter. Capacity unit) Checking method & Countermeasure • • Check if an instantaneous power failure or power failure, etc. has occurred. Check if the voltage is the rated voltage value. 2) The wiring is defective.
Checking code Meaning, detecting method Checking method & Countermeasure Cause 4220 Bus 1 If VDC 400 V is de- 1) The power supply voltage is abnormal. voltage tected during inverter abnormality operation. (Variable 2) The wiring is defective. capacity unit) • • Check if an instantaneous stop or power failure, etc. has occurred. Check if the voltage is the rated voltage value.
Checking code 4240 Over load protection (Variable capacity unit) Meaning, detecting method Cause If IAC 32 Amps is detected con- 1) Air passage short cycle. tinuously for 10 minutes during operation of the inverter after 5 or 2) The heat exchanger is clogged. more seconds have passed since 3) Power supply voltage. the inverter started. Checking method & Countermeasure Is the unit’s exhaust short cycling? Clean the heat exchanger.
Checking code 5101 5102 5103 5104 5105 5107 5108 5109 5112 5113 Temperature sensor abnormality (Outdoor unit) 5106 Meaning, detecting method Discharge 1 Detects thermistor short (high (TH11) temperature pick up) during (TH12) operation or open circuit (low temperature pick up). The outLow d o o r u n i t i s t e m p o ra r i l y Pressure stopped and it enters the 3Saturaminute restart prohibit mode.
Checking code 5201 Pressure sensor abnormality (Variable capacity unit) Meaning, detecting method Cause Checking method & Countermeasure 1 When pressue sensor detects 1) Pressure sensor trouble. See Troubleshooting of pressure sensor. 0.098MPa or less during operation, outdoor unit once stops with 3 minutes restarting 2) Inner pressure drop due to a leakage. mode, and restarts if the detected pressure of pressure sensor ex- 3) Broken cover. 4) Coming off of pin at connector porceeds 0.
Checking code 5301 IAC sensor/ circuit abnormality Meaning, detecting method Cause 1 If IAC 3 Amps is detected just 6) The circuit board is defective. before the inverter starts, or If IAC 3 Amps is detected during inverter operation after 5 seconds has passed since the inverter started when the INV board’s SW1-1 is OFF. [Inverter error detail : 6] 2 If the current sensor (ACCT) miss-wiring is detected during inverter operation.
(2) Communication/system Checking code Meaning, detecting method Cause Checking method & Countermeasure 1) Two or more controllers of outdoor At the genration of 6600 error, release the error by unit, indoor unit, remote controller, remote controller (with stop key) and start again. BC controller, etc. have the same a) If the error occures again within 5 minutes. Transmission from units with the address. Search for the unit which has the same address same address is detected.
Checking code 6602 Meaning, detecting method Cause Checking method & Countermeasure Transmission processor hardware Checking method and processing error YES Transmission line installed while turning power source on? Shut off the power source of outdoor/indoor units and make it again. NO Check power source of indoor unit.
Checking code 6606 Meaning, detecting method Cause Checking method & Countermeasure Communications with transmis- 1) Data is not properly transmitted due Turn off power sources of indoor unit, and outdoor sion processor error to casual errouneous operation of unit. the generating controller. When power sources are turned off sepaCommunication trouble between 2) Faulty generating controller. rately, microcomputer is not reset and norapparatus processor and transmal operations can not be restored.
Checking code 6607 Meaning, detecting method No ACK error When no ACK signal is detected in 6 continuous times with 30 second interval by transmission side controller, the transmission side detects error.
Checking code Meaning, detecting method 6607 No ACK error (continued) When no ACK signal is detected in 6 continuous times with 30 second interval by transmission side controller, the transmission side detects error.
Checking code Meaning, detecting method 6607 No ACK error (continued) When no ACK signal is detected in 6 continuous times with 30 second interval by transmission side controller, the transmission side detects error. Note: System Generating Display of compounit address trouble sition 1 Outdoor unit 2 Indoor (3) Connecting system with system controller (MELANS) unit (IC) Detecting method The address/attribute shown on remote controller indicates the controller not providing the answer (ACK).
Checking code Meaning, detecting method 6607 No ACK error (continued) When no ACK signal is detected in 6 continuous times with 30 second interval by transmission side controller, the transmission side detects error.
Checking code 6608 Meaning, detecting method Checking method & Countermeasure Cause No response error 1) At the collision of mutual transmis- a) Generation at test run. sion data when transmission wiring Turn off the power sources of OC unit and IC unit for more than 5 minutes simultaneously, Though acknowledgement of reis modified or the polarity is ceipt (ACK) is received after changed while turning the power and make them again.
(3) System error Checking code 7100 Meaning, detecting method Cause Checking method & Countermeasure Total capacity error 1) Total capacity of indoor units in the a) Check for the model total (capacity cord total) of same refrigerant system exceeds indoor units connected. Total capacity of indoor units in the following: b) Check whether indoor unit capacity code (SW2) the same refrigerant system exis wrongly set. Model Total capacity ceeds limitations.
Checking code 7102 Meaning, detecting method Connected unit count over Cause 2) Disconnection of transmission wiring at Outdoor unit. Checking method & Countermeasure d) Check for the model total (capacity code total) of indoor units connected. 3) Short circuit of transmission line in case of 2) and 3), remote controller displays “HO”. 4) When PUHN is connected with SW4-6=OFF. 5) When PUHN is not connected with SW4-6=ON.
(4) The following events are not malfunctions (errors). Event Remote controller display The indoor unit does not operate even when the cooling or heating system has been turned on. “Cooler (heater)” blinks The cooling or heating system will not operate when the system is operating in the opposite mode for another indoor unit.
Event Remote controller display Cause The four-way solenoid of the constant rate unit turns on during cooling system operation. Normal display In order to prevent intrusion of the refrigerant while the constant rate unit is shut down, the four-way solenoid of the constant rate unit is on during cooling, off during heating, and off during shut down. The constant rate unit does not operate after turning on the power.
[3] LED Monitor Display (1) How to read LED for service monitor By setting of DIP SW1-1 ~ 1-8, the unit operating condition can be observed with the service LED on the control circuit board. (For the relation of each DIP SW to the content, see the table provided.) As shown in the figure below, the LED consist of 7 segments is put in 4 sets side by side for numerical and graphic display.
1 Variable capacity unit (SW4-2 OFF) No SW1 12345678910 Item LD1 LD2 LD3 COMP COMP1 52C2 0 0000000000 Relay Output Display 1 (Light up Operating Operating to display) Check Display 1 OC Error 1 1000000000 Relay Output Display 2 21S4a Remarks LD6 SV1 LD7 SV 22/ 32 0000 ~ 9999 (Address and error code reversed) SV4 21S4b 2 0100000000 Check Display 2 (Also includes IC) SV5b SV6 CH2, 3 52F LD8 Lights for LD8 is a relay output Normal indicator which lights Operation up at all times when the micro
Variable capacity unit No SW1 12345678910 Item Remarks LD2 21 1010100000 Outdoor Unit Preliminary Error History High Pressure Error 1, 2 — 22 0110100000 Overcurrent INV Break Error Refrigerant Configration Oil TH10a OverDetection Tempera- Error charge Error ture Error TH10b Error 23 1110100000 TH11 Error TH12 Error TH2 Error TH3 Error TH4 Error TH6 Error 24 0001100000 TH8 Error TH9a Error TH9b Error TH10c Error Pressure THHS Sensor Error Error 25 1001100000 Error History 1 26 01011
Variable capacity unit No SW1 12345678910 Item LD1 52 0010110000 TH6 Data LD2 LD3 Display LD4 LD5 Remarks LD6 LD7 LD8 – 99.9 ~ 999.9 53 1010110000 TH7 Data 54 0110110000 TH8 Data 55 1110110000 TH9a Data 56 0001110000 TH9b Data 57 1001110000 TH10c Data 58 0101110000 High Pressure Sensor Data 59 1101110000 Low Pressure Sensor Data 60 0011110000 THHS Data 61 1011110000 62 0111110000 OC 63 1111110000 OC* 64 0000001000 Accumulator Level 65 1000001000 TH10a 0 ~ 9.
When there is an error stop with No101-125, the data on error stops or the data immediately before the error postponement stop, which is stored in service memory, are displayed.
When there is an error stop with No101-125, the data on error stops or the data immediately before the error postponement stop, which is stored in service memory, are displayed. No SW1 12345678910 Item LD1 116 0010111000 OC 117 1010111000 OC* 118 0110111000 Qj LD2 LD3 Display LD4 LD5 Variable capacity unit Remarks LD6 LD7 LD8 0 ~ 9.999 0000 ~ 9999 119 1110111000 COMP1 Output Frequency 120 0001111000 AK 121 1001111000 SLEV 122 0101111000 LEV1 123 1101111000 TH6 – 99.9 ~ 999.
Variable capacity unit No SW1 12345678910 Item 142 0111000100 IC15 Room Temperature LD1 LD2 LD3 Display LD4 LD5 – 99.9 ~ 999.
Variable capacity unit No SW1 12345678910 Item 172 0011010100 IC13 Gas Pipe Temperature LD1 LD2 LD3 Display LD4 LD5 – 99.9 ~ 999.
Variable capacity unit No SW1 12345678910 Item 208 0000101100 IC1 LEV Opening Pulse LD1 LD2 LD3 Display LD4 LD5 0000 ~ 9999 209 1000101100 IC2 LEV Opening Pulse 210 0100101100 IC3 LEV Opening Pulse 211 1100101100 IC4 LEV Opening Pulse 212 0010101100 IC5 LEV Opening Pulse 213 10101011000 IC6 LEV Opening Pulse 214 0110101100 IC7 LEV Opening Pulse 215 11101011000 IC8 LEV Opening Pulse 216 0001101100 IC9 LEV Opening Pulse 217 1001101100 IC10 LEV Opening Pulse 218 0101101100 IC11 LEV Opening Pulse 219 11
Variable capacity unit No SW1 12345678910 Item 235 1101011100 IC12 Operation Mode 236 0011011100 IC13 Operation Mode LD1 LD2 LD3 Display LD4 LD5 Remarks LD6 LD7 LD8 0: Stop 1: Fan 2: Cooling 3: Heating 4: Dry 237 1011011100 IC14 Operation Mode 238 0111011100 IC15 Operation Mode 239 1111011100 IC16 Operation Mode 240 0000111100 IC1 Filter 0000 ~ 9999 241 1000111100 IC2 Filter 242 0100111100 IC3 Filter 243 1100111100 IC4 Filter 244 0010111100 IC5 Filter 245 1010111100 IC6 Filter 246 0110111100 I
Variable capacity unit No SW1 12345678910 Item LD1 LD2 LD3 Display LD4 LD5 270 0111000010 271 1111000010 272 0000100010 273 1000100010 274 0100100010 275 1100100010 276 0010100010 277 1010100010 278 0110100010 279 1110100010 280 0001100010 281 1001100010 282 0101100010 283 1101100010 284 0011100010 285 1011100010 286 0111100010 287 1111100010 288 0000010010 289 1000010010 290 0100010010 291 1100010010 292 0010010010 293 1010010010 294 0110010010 295 1110010010 296 0001010010 297 1001010010 298 0101010
Variable capacity unit No SW1 12345678910 Item LD1 LD2 LD3 Display LD4 LD5 Remarks LD6 LD7 LD8 309 1010110010 310 0110110010 311 1110110010 312 0001110010 313 1001110010 314 0101110010 315 1101110010 316 0011110010 317 1011110010 318 0111110010 319 1111110010 320 0000001010 321 1000001010 322 0100001010 323 1100001010 324 0010001010 325 1010001010 326 0110001010 327 1110001010 328 0001001010 329 1001001010 330 0101001010 331 1101001010 332 0011001010 333 1011001010 334 0111001010 335 1111001010 336
Variable capacity unit No SW1 12345678910 Item 345 1001101010 IC25 Address/ Capacity Code LD1 LD2 LD3 Display LD4 LD5 0000 ~ 9999 346 0101101010 IC26 Address/ Capacity Code 347 1101101010 IC27 Address/ Capacity Code 348 0011101010 IC28 Address/ Capacity Code 349 1011101010 IC29 Address/ Capacity Code 350 0111101010 IC30 Address/ Capacity Code 351 1111101010 IC31 Address/ Capacity Code 352 0000011010 IC32 Address/ Capacity Code 353 1000011010 354 0100011010 355 1100011010 356 0010011010 357 101001101
Variable capacity unit No SW1 12345678910 Item LD1 LD2 LD3 Display LD4 LD5 381 1011111010 382 0111111010 383 1111111010 384 0000000110 IC17 Room Temperature – 99.9 ~ 999.
Variable capacity unit No SW1 12345678910 Item LD1 LD2 LD3 Display LD4 LD5 408 0001100110 IC25 Liquid Pipe Temperature 409 1001100110 IC26 Liquid Pipe Temperature 410 0101100110 IC27 Liquid Pipe Temperature 411 1101100110 IC28 Liquid Pipe Temperature 412 0011100110 IC29 Liquid Pipe Temperature 413 1011100110 IC30 Liquid Pipe Temperature 414 0111100110 IC31 Liquid Pipe Temperature 415 1111100110 IC32 Liquid Pipe Temperature 416 0000010110 IC17 Gas Pipe Temperature – 99.9 ~ 999.
Variable capacity unit No SW1 12345678910 Item LD1 LD2 LD3 Display LD4 LD5 434 0100110110 IC19 SH 435 1100110110 IC20 SH 436 0010110110 IC21 SH 437 1010110110 IC22 SH 438 0110110110 IC23 SH 439 1110110110 IC24 SH 440 0001110110 IC25 SH 441 1001110110 IC26 SH 442 0101110110 IC27 SH 443 1101110110 IC28 SH 444 0011110110 IC29 SH 445 1011110110 IC30 SH 446 0111110110 IC31 SH 447 1111110110 IC32 SH 448 000001110 IC17 SC – 99.9 ~ 999.
Variable capacity unit No SW1 12345678910 Item LD1 LD2 LD3 Display LD4 LD5 470 0110101110 IC23 LEV Opening Pulse 471 1110101110 IC24 LEV Opening Pulse 472 0001101110 IC25 LEV Opening Pulse 473 1001101110 IC26 LEV Opening Pulse 474 0101101110 IC27 LEV Opening Pulse 475 1101101110 IC28 LEV Opening Pulse 476 0011101110 IC29 LEV Opening Pulse 477 1011101110 IC30 LEV Opening Pulse 478 0111101110 IC31 LEV Opening Pulse 479 1111101110 IC32 LEV Opening Pulse 480 0000011110 IC17 Operation Mode 481 1000011110 I
No SW1 12345678910 Item 496 0000111110 IC17 Filter LD1 LD2 LD3 Display LD4 LD5 0000 ~ 9999 497 1000111110 IC18 Filter 498 0100111110 IC19 Filter 499 1100111110 IC20 Filter 500 0010111110 IC21 Filter 501 1010111110 IC22 Filter 502 0110111110 IC23 Filter 503 1110111110 IC24 Filter 504 0001111110 IC25 Filter 505 1001111110 IC26 Filter 506 0101111110 IC27 Filter 507 1101111110 IC28 Filter 508 0011111110 IC29 Filter 509 1011111110 IC30 Filter 510 0111111110 IC31 Filter 511 1111111110 IC32 Filter -194-
2 Constant capacity unit (SW4-2 ON) No SW1 12345678910 Item LD1 0 0000000000 Relay Output COMP Display1 (blinking Operadisplay) tion LD2 21S4a COMP 1 Operating Remarks LD6 SV1 LD7 LD8 SV2, 3 Lights for Only for Normal the Operation PUHNP-YMF-C 0000 ~ 9999 (Address and error code reversed) Check Display 1 OC Error 1 1000000000 Relay Output Display 2 Display LD4 LD5 LD3 SV4 LD8 is a relay output indicator which lights up at all times when the microcomputer’s power is ON.
Constant capacity unit No SW1 12345678910 25 1001100000 Item LD1 LD2 LD3 Display LD4 LD5 26 0101100000 27 1101100000 28 0011100000 29 1011100000 30 0111100000 31 1111100000 32 0000010000 33 1000010000 34 0100010000 35 1100010000 36 0010010000 37 1010010000 38 0110010000 39 1110010000 40 0001010000 41 1001010000 42 0101010000 43 1101010000 44 0011010000 45 1011010000 46 0111010000 TH11 Data – 99.9 ~ 999.9 47 1111010000 48 0000110000 49 1000110000 TH3 Data – 99.9 ~ 999.
Constant capacity unit No SW1 12345678190 Item 64 0000001000 Accumulator level 65 1000001000 TH10a LD1 LD2 LD3 Display LD4 LD5 Remarks LD6 LD7 LD8 0 ~ 9 (“AL =” is also displayed) – 99.9 ~ 999.9 66 0100001000 TH10b 67 1100001000 68 0010001000 69 1010001000 70 0110001000 71 1110001000 72 0001001000 73 1001001000 74 0101001000 AK2 0000 ~ 9999 75 1101001000 LEV2 76 0011001000 LEV1 77 1011001000 FANCON Output Value Displays the FANCON output value used for control.
When there is an error stop with No101-125, the data saved in the service memory immediately before the error is displayed. No SW1 12345678910 Item LD1 101 1010011000 Relay Output COMP Display 1 (blinking Operation display) 102 0110011000 Relay Output Display 2 103 1110011000 TH11 Data SV4 LD2 LD3 52C1 Display LD4 LD5 21S4 Remarks LD6 SV1 CH2, 3 SB5b – 99.9 ~ 999.9 104 0001011000 105 1001011000 106 0101011000 TH3 Data – 99.9 ~ 999.
• PREPARATION, REPAIRS AND REFRIGERANT REFILLING WHEN REPAIRING LEAKS [1] Location of leaks: Extension piping or indoor units (when cooling) (Pump down operation) 1 Attach a pressure gage to the low-pressure servicing check joint (CJ2). 2 Stop all of the indoor units. When the compressor has stopped, shut off the liquid ball valve (BV2) for the outdoor unit. 3 Stop all of the indoor units. When the compressor has stopped, turn the SW3-6 switch on the main board for the outdoor unit to ON.
[2] Location of leaks: Outdoor unit (Cooling mode) 1 Test run all indoor units in cooling mode. ON to test run all indoor 1. With SW3-1 on the MAIN board of the outdoor unit set to ON and SW3-2 OFF units. 2. Change the remote controller settings so that all indoor units run in cooling mode. 3. Check that all indoor units are running in cooling mode. 2 Check the Tc and SC16 data. (The LED monitor switch (SW1) on the MAIN board of the outdoor unit can be used to display this data on the LED.) 1.
[4] Location of leaks: Outdoor unit (when heating) 1 Remove any refrigerant from the entire system (outdoor unit, extension piping and indoor units). Reclaim the refrigerant; do not discharge it into the air. 2 Repair the leaks. 3 After the leaks are repaired, replace the dryer with a new one and extract all of the air from the entire system to create a vacuum. Then, refill with refrigerant until it reaches the calculated specification (outdoor unit + extension piping + indoor units).
ª CHECK THE COMPOSITION OF THE REFRIGERANT YES NO Start Test run all indoor units. Are all units operating stably? (Note 1) NO YES Is the refrigerant composition of OC correct? (Note 2) NO YES Finished checking the composition. Check TH2, TH9, LPS and the CS circuit block and correct any malfunctions. (Note 3) Is the refrigerant composition of OC correct? (Note 2) NO YES Finished checking the composition. Check that R407 is correctly charged.
Note 1 Wait until the units stabilize as described in the refrigerant amount adjustment procedure in “Chapter 6 ”. Note 2 After the units are operating stably, check that the refrigerant composition of OC is within the following ranges, indicating that the composition check is finished. OC = 0.20 ~ 0.26 If the accumulator liquid level AL = 0 when cooling: If the accumulator liquid level AL = 1 when cooling: OC = 0.23 ~ 0.34 OC = 0.25 ~ 0.
