Mitsubishi Electric CITY MULTI PMFY-P06NBMU-E Technical & Service Manual Download Page 1

Page: 1 / 42

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

No. OC341

REVISED EDITION-F

INDOOR UNIT

CONTENTS

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

2. FEATURES........................................... 3

3. PART NAMES AND FUNCTIONS........ 3

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

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

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

7. REFRIGERANT SYSTEM DIAGRAM.... 14

8. MICROPROCESSOR CONTROL....... 15

9. TROUBLESHOOTING........................ 22

10. DISASSEMBLY PROCEDURE........... 31

11. RoHS PARTS LIST............................. 35

April 2012

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 compli-

ant products, refer to the
RoHS PARTS LIST.

Revision:

• PMFY-P06/08/12/15NBMU-

ER5 have been added in
REVISED EDITION-F.

• Some descriptions have

been modified.

• Please void OC341

REVISED EDITION-E.

Indoor unit
[Model names]

[Service Ref.]

PMFY-P06NBMU-E

PMFY-P08NBMU-E

PMFY-P12NBMU-E

PMFY-P15NBMU-E

PMFY-P06NBMU-E PMFY-P06NBMU-E

PMFY-P06NBMU-E#2 PMFY-P06NBMU-ER3
PMFY-P06NBMU-ER4 PMFY-P06NBMU-ER5
PMFY-P08NBMU-E PMFY-P08NBMU-E

PMFY-P08NBMU-E#2 PMFY-P08NBMU-ER3
PMFY-P08NBMU-ER4 PMFY-P08NBMU-ER5
PMFY-P12NBMU-E PMFY-P12NBMU-E

PMFY-P12NBMU-E#2 PMFY-P12NBMU-ER3
PMFY-P12NBMU-ER4 PMFY-P12NBMU-ER5
PMFY-P15NBMU-E PMFY-P15NBMU-E

PMFY-P15NBMU-E#2 PMFY-P15NBMU-ER3
PMFY-P15NBMU-ER4 PMFY-P15NBMU-ER5

Summary of Contents for CITY MULTI PMFY-P06NBMU-E

Page 1: ... plate For servicing RoHS compli ant products refer to the RoHS PARTS LIST Revision PMFY P06 08 12 15NBMU ER5 have been added in REVISED EDITION F Some descriptions have been modified Please void OC341 REVISED EDITION E Indoor unit Model names Service Ref PMFY P06NBMU E PMFY P08NBMU E PMFY P12NBMU E PMFY P15NBMU E PMFY P06NBMU E PMFY P06NBMU E1 PMFY P06NBMU E 2 PMFY P06NBMU ER3 PMFY P06NBMU ER4 PM...

Page 2: ... been changed It is possible to extract a signal for an external heater PMFY P06NBMU ER3 PMFY P06NBMU ER4 PMFY P08NBMU ER3 PMFY P08NBMU ER4 PMFY P12NBMU ER3 PMFY P12NBMU ER4 PMFY P15NBMU ER3 PMFY P15NBMU ER4 1 DRAIN PIPE has been changed 2 JOINT SOCKET FOR DRAIN PIPE has been added PMFY P06NBMU ER4 PMFY P06NBMU ER5 PMFY P08NBMU ER4 PMFY P08NBMU ER5 PMFY P12NBMU ER4 PMFY P12NBMU ER5 PMFY P15NBMU ER...

Page 3: ...ght est in the industry The unit size is also quite small having been standardized to a strikingly compact 33 5 8 inch All of this make the chore of installation and maintenance that much simpler and easier Models Cooling capacity Heating capacity PMFY P06NBMU E 6 000 6 700 Btu h PMFY P08NBMU E 8 000 9 000 Btu h PMFY P12NBMU E 12 000 13 500 Btu h PMFY P15NBMU E 15 000 17 000 Btu h Guide vane Air f...

Page 4: ...ange is 46 102 F The display blinks if the temperature is less than 46 F or 102 F or more Louver display Indicates the action of the swing louver Does not appear if the louver is not running Power On indicator Indicates that the power is on Fan Speed indicator Shows the selected fan speed Ventilation indicator Appears when the unit is running in Ventilation mode Displays if the airflow is set to l...

Page 5: ...oling capacity Btu h 6 000 8 000 12 000 15 000 Heating capacity Btu h 6 700 9 000 13 500 17 000 Electric characteristic Input Cooling kW 0 042 0 042 0 044 0 054 Heating kW 0 042 0 042 0 044 0 054 Current Cooling A 0 20 0 20 0 21 0 26 Heating A 0 20 0 20 0 21 0 26 Exterior munsell symbol Unit Galvanized sheets Standard grilles ABS resin acrylic coating Munsell 0 98Y 8 99 0 63 PMFY P NBMU E 1 6 4Y 8...

Page 6: ...ve PMFY P06NBMU E PMFY P06NBMU E1 PMFY P06NBMU E 2 PMFY P06NBMU ER3 PMFY P06NBMU ER4 PMFY P06NBMU ER5 PMFY P08NBMU E PMFY P08NBMU E1 PMFY P08NBMU E 2 PMFY P08NBMU ER3 PMFY P08NBMU ER4 PMFY P08NBMU ER5 PMFY P12NBMU E PMFY P12NBMU E1 PMFY P12NBMU E 2 PMFY P12NBMU ER3 PMFY P12NBMU ER4 PMFY P12NBMU ER5 PMFY P15NBMU E PMFY P15NBMU E1 PMFY P15NBMU E 2 PMFY P15NBMU ER3 PMFY P15NBMU ER4 PMFY P15NBMU ER5 R...

Page 7: ...A E to the connector CN51 on the indoor controller board 2 Drive the relay after connecting the 12V DC relay between the Yellow and Orange connector lines w Use a relay of 1W or smaller MB Electromagnetic switch power relay for duct fan X Auxiliary relay 12V DC LY 1F How to read curves 0 2 Static pressure in W G 0 1 0 0 1 0 2 0 3 0 4 0 10 Air flow CFM 20 Characteristic diagram of air capacity take...

Page 8: ...NUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 μbar BAND CENTER FREQUENCIES Hz High NOTCH Medium1 Medium2 Low 37 SPL dB 36 34 32 LINE PMFY P08 12NBMU E PMFY P08 12NBMU E1 PMFY P08 12NBMU E 2 PMFY P08 12NBMU ER3 PMFY P08 12NBMU ER4 PMFY P08 12NBMU ER5 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR C...

Page 9: ...ontroller Terminal block for 110 288 5 250 200 200 Suspension bolt pitch Suspension bolt pitch Ceiling opening Ceiling opening Outer side of grille Outer side of grille Outer side of grille outer side of grille 230 198 or more 18 1 2 470 39 3 8 1000 2 15 18 74 5 13 16 20 13 16 20 8 1 2 470 16 15 16 430 1 25 32 45 13 3 8 340 1 25 32 45 11 16 17 5 11 16 17 5 39 3 8 1000 13 16 20 13 16 20 37 13 16 96...

Page 10: ...rminal block Power supply Models P06 P08 P12 P15 SW2 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF SW3 1 2 3 4 5 6 7 ON OFF 1 2 3 4 5 6 7 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 7 7 8 8 8 8 9 9 9 9 10 10 10 10 ON OFF fig 1 Mark Meaning Function Power supply for MA Remote controller Main power supply Indoor unit 208 230V Power on Lamp is lit LED on indoor board for servi...

Page 11: ...ply Models P06 P08 P12 P15 SW2 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF SW3 1 2 3 4 5 6 7 ON OFF 1 2 3 4 5 6 7 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 7 7 8 8 8 8 9 9 9 9 10 10 10 10 ON OFF fig 1 Mark Meaning Function Power supply for MA Remote controller Main power supply Indoor unit 208 230V Power on Lamp is lit LED on indoor board for service LED1 Main power sup...

Page 12: ...OFF SW3 1 2 3 4 5 6 7 ON OFF 1 2 3 4 5 6 7 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 7 7 8 8 8 8 9 9 9 9 10 10 10 10 ON OFF fig 1 Mark Meaning Function Power supply for MA Remote controller Main power supply Indoor unit 208 230V Power on Iamp is lit LED on indoor board for service LED1 Main power supply Power supply for MA Remote controller on Iamp is lit LED2 2 Use Copper Supply Wire SWE ON OFF GR CN...

Page 13: ... ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF SW3 1 2 3 4 5 6 7 ON OFF 1 2 3 4 5 6 7 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 7 7 8 8 8 8 9 9 9 9 10 10 10 10 ON OFF fig 1 Mark Meaning Function Power supply for MA Remote controller Main power supply Indoor unit 208 230V Power on Iamp is lit LED on indoor board for service LED1 Main power supply Power supply for MA Remote controller ...

Page 14: ...PMFY P15NBMU ER3 PMFY P06NBMU ER4 PMFY P08NBMU ER4 PMFY P12NBMU ER4 PMFY P15NBMU ER4 PMFY P06NBMU ER5 PMFY P08NBMU ER5 PMFY P12NBMU ER5 PMFY P15NBMU ER5 Service Ref Item PMFY P06 P08 P12 P15NBMU E PMFY P06 P08 P12 P15NBMU E1 PMFY P06 P08 P12 P15NBMU E 2 PMFY P06 P08 P12 P15NBMU ER3 PMFY P06 P08 P12 P15NBMU ER4 PMFY P06 P08 P12 P15NBMU ER5 Gas pipe 1 2 12 7 Liquid pipe 1 4 6 35 Unit in mm Service R...

Page 15: ...perature 2 F Thermo ON Room temperature desired temperature Thermo OFF 1 2 Anti freezing control Detected condition When the liquid pipe temp TH22 is 32 F or less in 16 minutes from compressors start up anti freezing control starts and the thermostat OFF Released condition The timer which prevents reactivating is set for 3 minutes and anti freezing control is cancelled when any one of the followin...

Page 16: ...in the air or in the water Drain sensor temperature rise t Temperature of drain sensor before current is applied T0 Temperature of drain sensor after current is applied T1 t T1 T0 1 Initial setting Start at COOL mode and horizontal vane 2 Vane position Horizontal Downward A Downward B Downward C Swing 3 Restriction of the downward vane setting When setting the downward vane A B or C in Medium1 Med...

Page 17: ...75 F 75 F Ta Unconditional 9 3 7 3 5 3 3 3 10 3 Dry mode OFF 2 Fan Note Remote controller setting is not acceptable Dry mode Fan speed notch ON OFF Low Stop 4 Vane up down vane change Same control as COOL operation Same control as COOL operation PAR 21MAA ON OFF FILTER CHECK OPERATION CLEAR TEST TEMP MENU BACK DAY MONITOR SET CLOCK ON OFF û Fû C û Fû C ERROR CODE AFTER TIMER TIME SUN MON TUE WED T...

Page 18: ...r 6 minutes 2 2 Liquid level detection method The liquid level is detected by determining whether or not the drain sensor is submerged based on the amount the temperature rises after self heating the sensor This process is performed if any of the following conditions is satisfied Drain pump is ON Indoor piping liquid piping temperature indoor room temperature 18 F Indoor piping liquid piping tempe...

Page 19: ...minating the stand by hot adjust mode A C B Extra Low Low Set fan speed by the remote controller Hot adjust mode 1 2 2 Preheating exclusion mode When the condition changes the auxiliary heater ON to OFF thermostat or operation stop etc the indoor fan operates in Low mode for 1 minute 1 STAND BY will be displayed during the stand by hot adjust mode To be continued to the next page 1 This control is...

Page 20: ... minutes 1 Initial setting OFF HEAT last setting When changing the mode from exception of HEAT to HEAT operation Downward C 2 Vane position Horizontal Downward A Downward B Downward C Swing 3 Restriction of vane position The vane is horizontally fixed for the following modes The control by the remote controller is temporarily invalidated and controlled by the unit Thermo OFF Stand by hot adjust Ex...

Page 21: ...been turned ON for 6 minutes the drain pump is kept ON for a further 6 minutes 1 2 Liquid level detection method The liquid level is detected by determining whether or not the drain sensor is submerged based on the amount the temperature rises after self heating the sensor This process is performed if any of the following conditions is satisfied Drain pump is ON Indoor piping liquid piping tempera...

Page 22: ...Measure the resistance between the terminals with a tester At the ambient temperature 68 F Measure the resistance after 3 minutes have passed since the power supply was turned off At the ambient temperature 32 F 140 F Vane motor MV Linear expansion valve LEV Drain pump DP Drain sensor DS Refer to the next page for the details Refer to the next page for the details Refer to the next page for the de...

Page 23: ... the relay connector are different follow the color of the lead wire Thermistor characteristic graph Thermistor Room temperature detection TH21 Thermistor Liquid pipe temperature detection TH22 Thermistor Gas pipe temperature detection TH23 Thermistor R0 15k 3 Fixed number of B 3480 2 Rt 15exp 3480 30_F 15 8k 50_F 9 6k 70_F 6 0k 80_F 4 8k 90_F 3 9k 100_F 3 2k Drain sensor DS Thermistor R0 6 0k 5 F...

Page 24: ...n the operation circuit Countermeasures Exchange the indoor con troller board at drive circuit failure Linear expansion valve mechanism is locked Valve does not close completely Wrong connection of the connector or contact failure To check the linear expansion valve operate the indoor unit in fan mode and at the same time operate other indoor units in cooling mode then check the pipe temperature l...

Page 25: ...e power supply Power supply check Check the voltage of the indoor controller board with the connector FAN CNMF1 2 connected to the board Approx 294 325V DC between the connecter FAN and CNMF1 and CNMF2 Replace the indoor controller board Is the voltage normal Yes No Indoor controller board fuse check Wiring contact check Contact of fan motor connector FAN CNMF1 2 No No Wiring recovery Replace the ...

Page 26: ...6 1 5 SW3 Function setting SW4 Model Selection Setting for PMFY series Changing the opening of linear expansion valve when the thermostat is OFF Thermistor Room temperature detection position Initial setting ON OFF 1 2 3 4 5 6 7 8 9 10 Indoor controller board 4 At cooling mode each angle can be used only 1 hour Do not use SW3 9 10 as trouble might be caused by the usage condition 6 Second setting ...

Page 27: ...or over 10 at 0 and match SW11 for 1 to 9 with 3 How to set branch numbers SW14 Series R2 only Match the indoor unit s refrigerant pipe with the BC controller s end connection number Remain other than series R2 at 0 If the unit is used at the 230V area set the voltage to 230V If the unit is used at the 208V set the voltage to 208V Address board Initial setting Address board Initial setting Address...

Page 28: ...nsion valve output LEV 12VDC pulse output CN31 Drain sensor DS CN51 Centrally control 1 2 Control signal 12VDC pulse input 1 3 4 Operation indicator 12VDC 3 3 5 Malfunction indicator 12VDC 3 SW2 Capacity setting CN6V Vane motor output MV 12VDC pulse output CN20 Room temperature thermistor TH21 CN27 Connector Damper 12VDC 1 SW3 Function setting CN32 Connector Remote switch SW4 Model selection CND C...

Page 29: ... Remote controller connecting wire 1 3 8 7 13V DC Pin 1 CN6V1 Vane motor 12VDC pulse output CN32 Connector Remote switch SW2 Capacity setting SW3 Function setting SW4 Model setting CN51 Centrally control 1 2 Control signal 12VDC pulse input 1 3 4 Operation indicator 12VDC 3 3 5 Malfunction indicator 12VDC 3 CN44 Pipe temperature 1 2 thermistor Liquid TH22 3 4 thermistor Gas TH23 CN20 Room thermist...

Page 30: ...NBMU E 2 PMFY P12NBMU E 2 PMFY P15NBMU E 2 PMFY P06NBMU ER3 PMFY P08NBMU ER3 PMFY P12NBMU ER3 PMFY P15NBMU ER3 PMFY P06NBMU ER4 PMFY P08NBMU ER4 PMFY P12NBMU ER4 PMFY P15NBMU ER4 PMFY P06NBMU ER5 PMFY P08NBMU ER5 PMFY P12NBMU ER5 PMFY P15NBMU ER5 SW1 Function setting SW5 Voltage selector SW12 Address setting 10ths DIGIT SW11 Address setting 1s DIGIT SW14 Branch No OC341F ...

Page 31: ...h ends of nut with your fingers after the grille clicked See Figure 1 2 Pull out the handle of air intake grille strongly toward you See Figure 2 3 Draw the string of the air intake grille to prevent the air intake grille from dropping See Figure 3 Photo 1 Figure 1 Air filter Figure 2 Figure 3 Points for securing the grille Points for securing the grille Points for securing the grille Drainage pan...

Page 32: ...ght leaving them slightly loose 4 Tighten the securing bolts A and securing screws B in the centre 3 places See Figure 6 5 Tighten the securing bolts A in the 4 places at left and right Make sure there are no gaps between the indoor unit and the grille and between the grille and the ceiling surface If there are gaps the wind may come in and it may cause water to drip See Figure 8 Tighten the secur...

Page 33: ...tion material white on the right side of nozzle 9 Remove the nozzle 6 screws 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 Liquid Gas condenser evaporator tempera...

Page 34: ...n the motor support 11 Remove the fan motor and line flow fan The fan motor and line flow fan can be removed without removing the heat exchanger 7 Removing the thermistor Room temperature detection 1 Remove the panel 2 Remove the address board cover 3 Remove the electrical parts cover 4 Remove the thermistor Intake temperature detector 5 Disconnect the lead wire from the cord clamp 5 points 6 Disc...

Page 35: ...Drawing No Wiring Diagram Symbol Recom mended Q ty PMP 16 BMU BMUW 1 G T7W E16 003 AIR OUTLET GRILLE 1 G T7W E22 003 AIR OUTLET GRILLE 1 2 G R01 E01 055 LATCH 2 2 3 G R01 E01 099 PANEL HOOK 2 2 4 G R01 E07 054 GRILLE CATCH 2 2 5 G R01 E14 500 L L FILTER 1 1 6 G R01 E15 500 L L FILTER 1 1 7 G T7W E04 691 INTAKE GRILLE 1 G T7W E06 691 INTAKE GRILLE 1 8 G R01 E06 054 GRILLE SHAFT 2 2 9 G R01 E01 648 ...

Page 36: ...L 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 RoHS PARTS LIST 7 8 9 1 2 3 4 6 14 16 21 18 17 20 19 10 11 12 15 13 22 5 23 OC341F ...

Page 37: ...WASHER No 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 RoHS Part No Part Name Specification Q ty set Remarks Drawing No Wiring Diagram Symbol Recom mended Q ty 06 08 12 15 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 06 08 12 15 R01 23A 102 R01 E04 103 R01 E32 114 R01 E01 079 R01 E18 223 R01 E02 092 T7W H08 480 T7W H09 480 R01 E30 529 R01 H12 202...

Page 38: ...2 PMFY P06NBMU ER3 PMFY P08NBMU ER3 PMFY P12NBMU ER3 PMFY P15NBMU ER3 PMFY P06NBMU ER4 PMFY P08NBMU ER4 PMFY P12NBMU ER4 PMFY P15NBMU ER4 PMFY P06NBMU ER5 PMFY P08NBMU ER5 PMFY P12NBMU ER5 PMFY P15NBMU ER5 RoHS PARTS LIST 7 8 9 1 2 3 4 6 13 15 20 17 16 19 18 10 11 14 12 21 5 22 23 OC341F ...

Page 39: ...EXCHANGER 1 1 8 G R01 E30 529 DRAIN PAN ASSY 1 1 1 1 9 G R01 H12 202 THERMISTOR ROOM 1 1 1 1 TH21 10 G R01 E03 038 GUIDE VANE 1 1 1 1 8pcs set 11 G R01 N15 202 THERMISTOR LIQUID GAS 1 1 1 1 TH22 23 12 G R01 H06 401 EXPANSION VALVE 1 1 1 1 LEV 13 G R01 E16 002 VANE 1 1 1 1 14 G R01 E05 110 CASING ASSY 1 1 1 1 15 G R01 32K 241 SENSOR HOLDER 1 1 1 1 16 G R01 E11 266 DRAIN SENSOR 1 1 1 1 DS 17 G T7W E...

Page 40: ...emarks Drawing No Wiring Diagram Symbol Recom mended Q ty PMFY P06 08 12 15 NBMU E NBMU E1 NBMU E 2 NBMU ER3 NBMU ER4 NBMU ER5 1 G T7W E41 716 TERMINAL BLOCK 3P L1 L2 GR 1 1 1 1 1 1 TB2 2 G R01 E27 246 TERMINAL BLOCK 3P M1 M2 S 1 1 1 1 1 1 TB5 3 G R01 E53 246 TERMINAL BLOCK 2P 1 2 1 1 1 1 1 1 TB15 4 G T7W E01 294 ADDRESS BOARD 1 1 1 1 1 1 A B 5 G R01 E10 304 CABLE ASSY 1 1 1 1 1 1 6 G T7W 420 239 ...

Page 41: ...41 OC341F ...

Page 42: ...C341 REVISED EDITION E PDF 7 Distributed in Dec 2008 No OC341 REVISED EDITION D PDF 7 Distributed in May 2008 No OC341 REVISED EDITION C PDF 7 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 Apr 2012 Specifications are subject to change without notice TM...

Search results

Summary of Contents for CITY MULTI PMFY-P06NBMU-E

Reviews:

Related manuals for CITY MULTI PMFY-P06NBMU-E

Brands by name

Popular brands

Mitsubishi Electric CITY MULTI PMFY-P06NBMU-E, Technical & Service Manual

Search results

Summary of Contents for CITY MULTI PMFY-P06NBMU-E

Reviews:

Related manuals for CITY MULTI PMFY-P06NBMU-E

Brands by name

Popular brands