Service manual

ManualsBrandsMitsubishi ManualsDomestic AppliancesPMFY-P12NBMU-E

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

[Models]

PMFY-P06NBMU-E

PMFY-P08NBMU-E

PMFY-P12NBMU-E

PMFY-P15NBMU-E

No. OC341

INDOOR UNIT

CONTENTS

1. FEATURES ···········································2

2. PART NAMES AND FUNCTIONS ········3

3. SPECIFICATION···································5

4. OUTLINES AND DIMENSIONS············9

5. WIRING DIAGRAM·····························10

REFRIGERANT SYSTEM DIAGRAM

····11

7. MICROPROCESSOR CONTROL·······12

8. TROUBLESHOOTING························19

9. DISASSEMBLY PROCEDURE···········26

10. PARTS LIST········································29

CUS

June 2005

R410A / R22

OC341--1new.qxp 05.6.1 5:16 PM Page 1

Summary of content (32 pages)

PAGE 1
OC341--1new.qxp 05.6.1 5:16 PM Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS June 2005 No. OC341 TECHNICAL & SERVICE MANUAL R410A / R22 [Models] PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E CONTENTS 1. FEATURES ···········································2 2. PART NAMES AND FUNCTIONS ········3 3. SPECIFICATION ···································5 4. OUTLINES AND DIMENSIONS············9 5. WIRING DIAGRAM·····························10 6. REFRIGERANT SYSTEM DIAGRAM····11 7.
PAGE 2
OC341--1new.qxp 1 05.6.1 5:16 PM Page 2 FEATURES Indoor Unit Models PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E Cooling capacity / Heating capacity 6,000 / 6,700 Btu/h 8,000 / 9,000 Btu/h 12,000 / 13,500 Btu/h 15,000 / 17,000 Btu/h 1. Fresh Air Intake Air recycled indefinitely can become stale and stagnant with air quality suffering significantly. Fresh air is the answer and it is for this reason that the PMFY- series takes in air directly from outdoors.
PAGE 3
OC341--1new.qxp 2 05.6.1 5:16 PM Page 3 PART NAMES AND FUNCTIONS ● Indoor Unit Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. Guide vane Air flow can be changed horizontally by moving the Guide vane to the left or right. Horizontal Air Outlet Filters Remove dust and pollutants from return air. Air intake Returns air from room. ● Remote controller Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
PAGE 4
OC341--1new.qxp 05.6.1 5:16 PM Page 4 ● Display “Sensor” indication Displayed when the remote controller sensor is used. Day-of-Week For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit. Shows the current day of the week. Time/Timer Display “Locked” indicator Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, shows the time remaining.
PAGE 5
OC341--1new.qxp 05.6.1 5:16 PM 3 Page 5 SPECIFICATION 3-1. Specification Item PMFY-P06NBMU-E PMFY-P08NBMU-E · PMFY-P12NBMU-E PMFY-P15NBMU-E V Hz Cooling capacity Btu/h 6,000 8,000 12,000 15,000 Heating capacity Btu/h 6,700 9,000 13,500 17,000 Cooling kW 0.042 0.042 0.044 0.054 Heating kW 0.042 0.042 0.044 0.054 Cooling A 0.20 0.20 0.21 0.26 Heating A 0.20 0.20 0.21 0.
PAGE 6
OC341--1new.qxp 05.6.1 5:16 PM Page 6 3-2. Electrical parts specifications Model Symbol PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E Parts name Room temperature thermistor TH21 Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.2k" Liquid pipe thermistor TH22 Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.2k" Gas pipe thermistor TH23 Resistance 30˚F/15.8k", 50˚F/9.6k", 70˚F/6.0k", 80˚F/4.8k", 90˚F/3.9k", 100˚F/3.
PAGE 7
OC341--1new.qxp 05.6.1 5:16 PM Page 7 3-3. Air capacity taken from outside PMFY-P·NBMU-E series are capable of taking air from outside. When taking air from outside, the duct fan must be used. The air capacity should be 20% or less of the air flow SPEC(Hi).
PAGE 8
OC341--1new.qxp 05.6.1 5:16 PM Page 8 3-4. NOISE CRITERION CURVES NOTCH SPL(dB) 35 High Medium1 33 30 Medium2 Low 27 LINE 90 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 20 NC-20 10 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE 63 125 250 500 1000 2000 4000 PMFY-P08NBMU-E PMFY-P12NBMU-E OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar) OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar) PMFY-P06NBMU-E 8000 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.
PAGE 9
1-11/16(43) 1-13/18(46) Refrigerant pipe(liquid) O.D.{1/4"(6.35) 3-3/8(96) ceiling drain pan panel same line Left side drain pan Lower view 7-7/8(200) 7-7/8(200) Panel(grille):PMP-40BM 23-5/8(600) 39-3/8(1000) outer side of grille Front 2-3/16(56) {1-31/32(50) 31-15/16(812) 29-7/8(759) Air outlet(lower) 13/16(20) 2-15/18(74.
PAGE 10
TO NEXT INDOOR UNIT PULL BOX FUSE(15A) BREAKER (15A) L1 L2 G POWER SUPPLY ~ / N 208—230V 60Hz TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER DC24-30V 2 1 TB15 TB2 MF 5 GRN / YLW RED BLU S(SHIELD) TB5 M2 M1 TO MA-REMOTE CONTROLLER DC8.7-13V BLU BLU ORN ORN (BLU) (M-NET) CN2M LED2 CN3A (BLU) LED1 6 5 4 FAN 3 (WHT) 2 1 1 2 1 2 3 I.
PAGE 11
OC341--1new.qxp 6 05.6.1 5:16 PM Page 11 REFRIGERANT SYSTEM DIAGRAM PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E Thermistor TH23 Strainer (#100mesh) Gas pipe Thermistor TH22 Flare connection w1 w2 Liquid pipe Heat exchanger Strainer (#50mesh) Linear expansion valve Strainer (#100mesh) Strainer pipe (#100mesh) Thermistor TH21 Unit:in.(mm) Service Ref.
PAGE 12
OC341--1new.qxp 7 05.6.1 5:16 PM Page 12 MICROPROCESSOR CONTROL INDOOR UNIT CONTROL 7-1. COOL operation TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE FUNCTION FILTER ˚F˚C ˚F˚C WEEKLY SIMPLE AUTO OFF ONLY1Hr. TEMP. MENU BACK PAR-21MAA MONITOR/SET ON/OFF ON/OFF button is FILTER DAY CLOCK 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display COOL. 3 Press the TEMP. button to set the desired temperature.
PAGE 13
OC341--1new.qxp 05.6.1 5:16 PM Page 13 From the preceding page. Control modes 3-1. Drain pump control •Always drain pump ON during the COOL and DRY mode operation. (Regardless of the thermostat ON/ OFF) •When the operation mode is changed from COOL or DRY to any other mode (including Stop), the drain pump continues to run for 3 minutes. Drain sensor function • The indoor circuit board energizes the drain sensor at a fixed voltage for a fixed duration.
PAGE 14
OC341--1new.qxp 05.6.1 5:16 PM Page 14 7-2. DRY operation 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display DRY. 3 Press the TEMP. button to set the desired temperature. NOTE: The set temperature changes 2°F when the or pressed one time. Dry 67 to 87°F. TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE FUNCTION FILTER ˚F˚C ˚F˚C WEEKLY SIMPLE AUTO OFF ONLY1Hr. TEMP.
PAGE 15
OC341--1new.qxp 05.6.1 5:16 PM Page 15 7-3. FAN operation 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display FAN. TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE FUNCTION FILTER ˚F˚C ˚F˚C WEEKLY SIMPLE AUTO OFF ONLY1Hr. TEMP. MENU BACK PAR-21MAA MONITOR/SET ON/OFF ON/OFF FILTER DAY CLOCK CHECK TEST OPERATION CLEAR Control modes 1. Fan 2. Drain pump Control details Set by remote controller.
PAGE 16
OC341--1new.qxp 05.6.1 5:16 PM Page 16 7-4. HEAT operation 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display HEAT. 3 Press the TEMP. button to set the desired temperature. NOTE: The set temperature changes 2°F when the or pressed one time. Heating 63 to 83°F. TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE FUNCTION FILTER ˚F˚C ˚F˚C WEEKLY SIMPLE AUTO OFF ONLY1Hr. TEMP.
PAGE 17
OC341--1new.qxp 05.6.1 5:16 PM Page 17 From the preceding page. Control details Control modes 2. Fan 2-3. Thermostat OFF mode When the thermoregulating function changes to OFF, the indoor fan operates in [Extra low]. 2-4. Heat defrosting mode The indoor fan stops. 3. Drain pump No drain pump operation However, when the control changes from COOL or DRY operation, the drain pump operates for 3 minutes. → 4.
PAGE 18
OC341--1new.qxp 05.6.1 5:16 PM Page 18 7-5. AUTO operation [Automatic COOL/HEAT change over operation] TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE ˚F˚C ˚F˚C TEMP. MENU BACK PAR-21MAA MONITOR/SET ON/OFF ON/OFF FILTER DAY CLOCK Control modes FUNCTION FILTER WEEKLY SIMPLE AUTO OFF ONLY1Hr. CHECK TEST OPERATION 1 Press POWER ON/OFF button. 2 Press the operation MODE button to display AUTO. 3 Press the TEMP. button to set the desired temperature.
PAGE 19
OC341--1new.qxp 05.6.1 5:16 PM 8 Page 19 TROUBLE SHOOTING 8-1. How to check the parts PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E Parts name Check points Thermistor (TH21) Thermistor (TH22) Disconnect the connector then measure the resistance using a tester. (Surrounding temperature 50°F~86°F) Normal Abnormal 4.3k"~9.6k" Open or short Refer to the next page for the details.
PAGE 20
OC341--1new.qxp 05.6.1 5:16 PM Page 20 < Thermistor for lower temperature > 50 Thermistor (TH21) Thermistor for lower temperature Thermistor (TH22) Thermistor (TH23) Rt=15exp { 3480( 30_F 50_F 70_F 80_F 90_F 100_F 1 273+(t-32)/1.8 Resistance (K") Thermistor R0=15k' ± 3% Fixed number of B=3480K ± 2% 40 1 )} 273 30 20 15.8k' 9.6k' 6.0k' 4.8k' 3.9k' 3.
PAGE 21
OC341--1new.qxp 05.6.1 5:16 PM Page 21 Output (Phase) Output 1 2 3 4 {1 ON OFF OFF ON {2 ON ON OFF OFF {3 OFF ON ON OFF {4 OFF OFF ON ON Closing a valve : 1 → 2 → 3 → 4 → 1 Opening a valve : 4 → 3 → 2 → 1 → 4 The output pulse shifts in above order. ❈ 1. When linear expansion valve operation stops, all output phase become OFF. 2.
PAGE 22
OC341--1new.qxp 05.6.1 5:16 PM Page 22 8-2. TROUBLESHOOTING Check method of indoor fan motor (fan motor / controller board) 1 Notes · High voltage is applied to the connecter (FAN) for the fan motor. Give attention to the service. · Do not pull out the connector (FAN) for the motor with the power supply on, doing so may result in damage to the board. 2 Self check Conditions : The indoor fan does not rotate. Turn OFF the power supply.
PAGE 23
OC341--1new.qxp 05.6.1 5:16 PM Page 23 8-3.
PAGE 24
OC341--1new.qxp 05.6.1 5:16 PM Page 24 Switch Pole Remarks 1 SW12 SW11 90 1 90 1 23 23 78 45 6 45 6 10 Address setting should be done when M-NET remote controller is being used. 78 78 90 1 78 SW11 90 1 Address can be set while the unit is stopped.
PAGE 25
OC341--1new.qxp 05.6.1 5:16 PM Page 25 8-4.
PAGE 26
OC341--1new.qxp 9 05.6.1 5:16 PM Page 26 DISASSEMBLY PROCEDURE PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E Be careful when removing heavy parts. OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS Photo 1 1. Removing the intake grille Opening the air intake grille (1) Press the PUSH of the air intake grille.(See figure 1) (2) Put your fingers on both ends of the air intake grille and let it down after the grille clicks.
PAGE 27
OC341--1new.qxp 05.6.1 5:16 PM Page 27 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 2. Removing the electrical parts box (1) Remove the panel. (2) Remove the address board cover. (3) Remove the electrical parts cover. (4) Disconnect the connectors of fan motor, vane motor, drain pump, room temperature thermistor, pipe temperature thermistor, condenser/evaporator temperature thermistor, and drain sensor on the electrical controller board. (5) Disconnect the lead wire and earth wire from terminal block.
PAGE 28
OC341--1new.qxp 05.6.1 5:17 PM Page 28 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 5. Removing the drain pump (1) Remove the panel. (2) Unhook the claw in the middle of nozzle and remove the drain pan. (3) Remove the address board cover. (4) Remove the electrical parts cover. (5) Disconnect the connector of drain pump. (6) Remove the drain hose. (7) Remove the drain pump.(2 screws) Photo 6 Drain sensor Drain pump Fan motor 6. Removing the fan motor and line flow fan (1) Remove the panel.
PAGE 29
OC341--1new.qxp 05.6.1 5:17 PM 10 Page 29 PARTS LIST PANEL PARTS PMP-16BMU 11 12 11 2 3 4 1 5 2 3 4 10 5 6 9 7 8 13 TEMP. ON/OFF Q'ty/set No. Part No. Part Name Wiring RecomRemarks Diagram mended Specification (Drawing No.) Symbol Q'ty PMP-16BMU 1 T7W E11 003 AIR OUTLET GRILLE 1 2 R01 E00 055 LATCH 2 3 — HANGER 2 2 4 R01 E00 099 PANEL HOOK 5 R01 E01 054 GRILLE CATCH 2 6 R01 E01 500 L.L.FILTER 1 7 R01 E02 500 L.L.
PAGE 30
OC341--1new.qxp 05.6.1 5:17 PM Page 30 26 FUNCTIONAL PARTS PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E 25 1 2 24 3 23 4 22 5 6 7 20 19 18 17 16 15 21 14 8 13 9 12 10 11 Part number that is circled is not shown in the figure. No. Part No.
PAGE 31
05.6.1 5:15 PM Page 31 1 RG79L094H01 ELECTRICAL PARTS PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E 8 CN60 FAN OC341--2new.qxp 2 7 3 CN6V CNP 4 5 6 No. Part No. 1 — Part Name CONTROL BOX Q'ty/set Price Wiring RecomRemarks P08 Diagram mended Specification PMFY-P06/ /P12/ P15 (Drawing No.
PAGE 32
OC341--2new.qxp 05.6.1 5:15 PM Page 32 HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN cCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Jun. 2005. No. OC341 PDF 10 Made in Japan New publication, effective Jun.