Service manual

ManualsBrandsMitsubishi ManualsDomestic AppliancesPMFY-P08NBMU-E

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

No. OC341

REVISED EDITION-B

INDOOR UNIT

CONTENTS

1. TECHNICAL CHANGES·······················2

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

3. PART NAMES AND FUNCTIONS ········3

4. SPECIFICATION···································5

5. OUTLINES AND DIMENSIONS············9

6. WIRING DIAGRAM·····························10

REFRIGERANT SYSTEM DIAGRAM

···12

8. MICROPROCESSOR CONTROL·······13

9. TROUBLESHOOTING························20

10. DISASSEMBLY PROCEDURE···········27

11. PARTS LIST········································30

12. RoHS PARTS LIST·····························33

July 2007

R410A / R22

NOTE:

• This manual describes only

service data of the indoor units.

• RoHS compliant products have

<G> mark on the spec name

plate.

• For servicing RoHS compliant

products, refer to the RoHS

PARTS LIST.

Revision:

• PMFY-P06/08/12/15NBMU-E1 are

added in REVISED EDITION-B.

• Some descriptions have been

modified.

• Please void OC341 REVISED

EDITION-A.

PMFY-P06NBMU-E PMFY-P06NBMU-E

PMFY-P06NBMU-E1

PMFY-P08NBMU-E PMFY-P08NBMU-E

PMFY-P08NBMU-E1

PMFY-P12NBMU-E PMFY-P12NBMU-E

PMFY-P12NBMU-E1

PMFY-P15NBMU-E PMFY-P15NBMU-E

PMFY-P15NBMU-E1

Indoor unit

[Model names] [Service Ref.]

OC341B--1.qxp 07.7.11 1:29 PM Page 1

Summary of content (36 pages)

PAGE 1
OC341B--1.qxp 07.7.11 1:29 PM Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS July 2007 No. OC341 REVISED EDITION-B TECHNICAL & SERVICE MANUAL R410A / R22 Indoor unit [Model names] PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E [Service Ref.] PMFY-P06NBMU-E PMFY-P06NBMU-E1 PMFY-P08NBMU-E PMFY-P08NBMU-E1 PMFY-P12NBMU-E PMFY-P12NBMU-E1 PMFY-P15NBMU-E PMFY-P15NBMU-E1 Revision: • PMFY-P06/08/12/15NBMU-E1 are added in REVISED EDITION-B. • Some descriptions have been modified.
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OC341B--1.qxp 1 07.7.11 1:29 PM Page 2 TECHNICAL CHANGES PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E ➔ ➔ ➔ ➔ PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1 1. FAN MOTOR(MF) has been changed. 2. CONTROLLER BOARD(I.B) has been changed. 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.
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OC341B--1.qxp 07.7.11 1:29 PM 3 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 to horizontal 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.
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OC341B--1.qxp 07.7.11 1:29 PM Page 4 ● Wired remote controller Display Section For purposes of this explanation, all parts of the display are shown as lit. During actual operation, only the relevant items will be lit. Day-of-Week “Sensor” indication Shows the current day of the week. Displayed when the remote controller sensor is used. Time/Timer Display Shows the current time, unless the simple or Auto Off timer is set. If the simple or Auto Off timer is set, the time to be switched off is shown.
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OC341B--1.qxp 07.7.11 1:29 PM 4 Page 5 SPECIFICATION 4-1. SPECIFICATIONS PMFY-P06NBMU-E PMFY-P06NBMU-E1 Item PMFY-P08NBMU-E PMFY-P08NBMU-E1 PMFY-P12NBMU-E PMFY-P12NBMU-E1 PMFY-P15NBMU-E PMFY-P15NBMU-E1 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.
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OC341B--1.qxp 07.7.11 1:29 PM Page 6 4-2. ELECTRICAL PARTS SPECIFICATIONS Service Ref. Symbol PMFY-P06NBMU-E PMFY-P06NBMU-E1 PMFY-P08NBMU-E PMFY-P08NBMU-E1 PMFY-P12NBMU-E PMFY-P12NBMU-E1 PMFY-P15NBMU-E PMFY-P15NBMU-E1 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.
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OC341B--1.qxp 07.7.11 1:29 PM Page 7 4-3. 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 is used. The air capacity should be 20% or less of the airflow SPEC(Hi). 9-13/16 11-3/8 904-{1/8 6 4-1/4 /1 {3-15 Service Ref.
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OC341B--1.qxp 07.7.11 1:29 PM Page 8 4-4. NOISE CRITERION CURVES NOTCH SPL(dB) High 35 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 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar) OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.
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16-15/16(430) Ceiling opening 13-3/8(340) Suspension bolt pitch 1-13/18(46) 1-11/16(43) Refrigerant pipe(liquid) O.D.{1/4"(6.35) 3-3/8(96) Ceiling Drain pan panel Same line Left side Lower view 7-7/8(200) 7-7/8(200) Panel(grille):PMP-16BMU 23-5/8(600) 39-3/8(1000) outer side of grille drain pan {1-31/32(50) 31-15/16(812) 29-7/8(759) Air outlet(lower) 13/16(20) 2-15/18(74.
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TH23 TO NEXT INDOOR UNIT PULL BOX FUSE(15A) BREAKER (15A) 1 2 L1 L2 G TB2 S(SHIELD) M2 M1 POWER SUPPLY ~ / N 208—230V 60Hz TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER DC24-30V TO MA-REMOTE CONTROLLER DC8.7-13V MF 5 GRN / YLW RED BLU TB5 TB15 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.
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TO NEXT INDOOR UNIT PULL BOX FUSE (15A) BREAKER (15A) POWER SUPPLY ~ / N 208-230V 60Hz TO OUTDOOR UNIT BC CONTROLLER REMOTE CONTROLLER DC24-30V TO MA-REMOTE CONTROLLER DC8.7-13V GR L2 L1 TB2 MF (SHIELD) GRN / YLW BLU RED MS 3~ S M2 M1 TB5 2 TB15 1 BLU BLU ORN ORN LED2 CN3A (BLU) t° LED1 6 (WHT) 3 FAN 1 1 (BLU) (M-NET) 2 CN2M 3 1 I.
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OC341B--1.qxp 7 07.7.
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OC341B--1.qxp 07.7.11 1:29 PM 8 Page 13 MICROPROCESSOR CONTROL INDOOR UNIT CONTROL 8-1. 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 14
OC341B--1.qxp 07.7.11 1:29 PM Page 14 From the preceding page Control modes 3. Drain pump Remarks Control details 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.
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OC341B--1.qxp 07.7.11 1:29 PM Page 15 8-2. 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 once. 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.
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OC341B--1.qxp 07.7.11 1:29 PM Page 16 8-3. 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.
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OC341B--1.qxp 07.7.11 1:29 PM Page 17 8-4. 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 once. Heating 63 to 83°F. TIME SUN MON TUE WED THU FRI SAT TIMER Hr ON AFTER AFTER OFF ERROR CODE ˚F˚C ˚F˚C FUNCTION FILTER WEEKLY SIMPLE AUTO OFF ONLY1Hr. TEMP.
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OC341B--1.qxp 07.7.11 1:29 PM Page 18 From the preceding page Control details Control modes 2. Fan Remarks 2-3. Thermo 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. No drain pump operation However, when the control changes from COOL or DRY operation, the drain pump operates for 3 minutes. 4.
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OC341B--1.qxp 07.7.11 1:29 PM Page 19 8-5. 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 WEEKLY SIMPLE AUTO OFF ONLY1Hr. TEMP. MENU BACK PAR-21MAA MONITOR/SET FUNCTION FILTER ON/OFF ON/OFF FILTER DAY CLOCK 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.
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OC341B--1.qxp 9 07.7.11 1:29 PM Page 20 TROUBLE SHOOTING 9-1. HOW TO CHECK THE PARTS PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E PMFY-P12NBMU-E1 Parts name PMFY-P15NBMU-E PMFY-P15NBMU-E1 Check points Thermistor (TH21) Thermistor (TH22) Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 50°F~86°F) Normal Abnormal 4.3k"~9.
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OC341B--1.qxp 07.7.11 1:29 PM Page 21 < Thermistor for lower temperature > 50 Thermistor (TH21) Thermistor for lower temperature Thermistor (TH22) Thermistor (TH23) Resistance (k") Thermistor R0=15k' ± 3% Fixed number of B=3480K ± 2% Rt=15exp { 3480( 30_F 50_F 70_F 80_F 90_F 100_F 1 273+(t-32)/1.8 40 1 )} 273 15.8k' 9.6k' 6.0k' 4.8k' 3.9k' 3.
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OC341B--1.qxp 07.7.11 1:29 PM Page 22 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 2 Linear expansion valve operation C D Closing a valve : 1 → 2 → 3 → 4 → 1 Opening a valve : 4 → 3 → 2 → 1 → 4 The output pulse shifts in above order. • When linear expansion valve operation stops, all output phase become OFF.
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OC341B--1.qxp 07.7.11 1:29 PM Page 23 9-2. 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.
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OC341B--1.qxp 07.7.11 1:29 PM Page 24 9-3.
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07.7.11 1:29 PM Page 25 Switch Pole Effective timing Remarks 90 1 78 SW11 90 1 23 45 6 45 6 1 SW12 23 10 Address setting should be done when M-NET remote controller is being used. 78 78 90 1 78 SW11 90 1 45 6 SW12 23 Rotary switch Address board 23 SW11 1st digit address setting SW12 2nd digit address setting Operation by switch 45 6 OC341B--1.
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OC341B--1.qxp 07.7.11 1:29 PM Page 26 9-4.
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OC341B--1.qxp 07.7.11 1:29 PM 10 Page 27 DISASSEMBLY PROCEDURE PMFY-P06NBMU-E PMFY-P06NBMU-E1 PMFY-P08NBMU-E PMFY-P08NBMU-E1 PMFY-P12NBMU-E PMFY-P12NBMU-E1 PMFY-P15NBMU-E PMFY-P15NBMU-E1 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.
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OC341B--1.qxp 07.7.11 1:29 PM Page 28 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS Photo 2 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.
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OC341B--1.qxp 07.7.11 1:29 PM Page 29 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.
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OC341B--1.qxp 11 07.7.11 1:29 PM Page 30 PARTS LIST (non-RoHS compliant) PANEL PARTS FOR PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E PMP-16BMU 10 11 10 2 3 1 4 2 3 9 4 5 8 6 7 Q'ty/set Part No. No. Part Name Specification PMP-16BMU 1 1 T7W E11 003 AIR OUTLET GRILLE 2 R01 E00 055 LATCH 2 3 R01 E00 099 PANEL HOOK 2 4 R01 E01 054 GRILLE CATCH 2 5 R01 E01 500 L.L.FILTER 1 6 R01 E02 500 L.L.
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OC341B--2.qxp 07.7.11 1:30 PM Page 31 FUNCTIONAL PARTS PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E 22 21 20 1 19 2 3 17 16 15 14 4 5 13 12 6 11 10 7 9 8 10 18 Part number that is circled is not shown in the figure. Q'ty/set No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Part No.
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OC341B--2.qxp 07.7.11 1:30 PM Page 32 ELECTRICAL PARTS PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E RG79L094H01 6 CN60 FAN 1 2 CN6V CNP 3 4 5 Q'ty/set No. Part No. 1 T7W E11 Part Name Specification PMFY-P 06/08/12/15 NBMU-E 716 TERMINAL BLOCK 3P (L1,L2,G) 1 Remarks (Drawing No.) Wiring RecomDiagram mended Symbol Q'ty TB2 2 T7W E17 716 TERMINAL BLOCK 3P (M1,M2,S) 1 TB5 3 R01 556 246 TERMINAL BLOCK 2P(1,2) 1 TB15 A.
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OC341B--2.qxp 07.7.11 1:30 PM 12 Page 33 RoHS PARTS LIST PANEL PARTS FOR PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMP-16BMU 10 PMFY-P12NBMU-E PMFY-P12NBMU-E1 11 10 PMFY-P15NBMU-E PMFY-P15NBMU-E1 2 1 3 4 2 3 9 4 5 8 6 No. RoHS 7 Q'ty/set Part No. Part Name Specification PMP-16BMU 1 G T7W E16 003 AIR OUTLET GRILLE 1 2 G R01 E01 055 LATCH 2 3 G R01 E01 099 PANEL HOOK 2 4 G R01 E07 054 GRILLE CATCH 2 5 G R01 E14 500 L.L.
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OC341B--2.qxp 07.7.11 1:30 PM FUNCTIONAL PARTS PMFY-P06NBMU-E PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P15NBMU-E PMFY-P06NBMU-E1 PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E1 Page 34 22 21 1 20 2 19 17 16 18 15 14 13 3 4 5 12 6 11 7 10 8 9 No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 RoHS Part number that is circled is not shown in the figure. G G G G G G G G G G G G G G G G G G G G G G G G G Part No.
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OC341B--2.qxp 07.7.11 1:30 PM Page 35 ELECTRICAL PARTS PMFY-P06NBMU-E PMFY-P06NBMU-E1 PMFY-P08NBMU-E PMFY-P12NBMU-E PMFY-P08NBMU-E1 PMFY-P12NBMU-E1 PMFY-P15NBMU-E PMFY-P15NBMU-E1 RG79L094H01 7 6 CN60 FAN 1 2 CN6V CNP 3 No. RoHS 4 5 Q'ty/set Part No. Part Name Specification PMFY-P06/08/12/15 NBMU-E NBMU-E1 Remarks (Drawing No.
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OC341B--2.qxp 07.7.11 1:30 PM Page 36 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN cCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Jul. 2007. No. OC341 REVISED EDITION-B PDF 9 Distributed in Aug. 2006. No. OC341 REVISED EDITION-A PDF 9 Distributed in Jun. 2005. No. OC341 PDF 10 Made in Japan New publication, effective Jul.