Mitsubishi Electric CITY MULTI PFFY Series Technical & Service Manual Download

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TECHNICAL & SERVICE MANUAL

Air-Conditioners For Building Application

<Indoor unit>

2014

Models

PFFY-P06NRMU-E,PFFY-P08NRMU-E
PFFY-P12NRMU-E,PFFY-P15NRMU-E
PFFY-P18NRMU-E,PFFY-P24NRMU-E
PFFY-P06NEMU-E,PFFY-P08NEMU-E
PFFY-P12NEMU-E,PFFY-P15NEMU-E
PFFY-P18NEMU-E,PFFY-P24NEMU-E

CONTENTS

SAFETY PRECAUTIONS ·························1

1. FEATURES ···········································3

2. PART NAMES AND FUNCTIONS ········4

3. SPECIFICATION ···································6

4. OUTLINES AND DIMENSIONS············8

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

6. REFRIGERANT SYSTEM DIAGRAM····11

7. TROUBLE SHOOTING ·······················12

8. DISASSEMBLY PROCEDURE ···········17

Floor Standing Type

Series PFFY

For use with the R410A & R22

Exposed type

Concealed type

Summary of Contents for CITY MULTI PFFY Series

Page 1: ...06NEMU E PFFY P08NEMU E PFFY P12NEMU E PFFY P15NEMU E PFFY P18NEMU E PFFY P24NEMU E CONTENTS SAFETY PRECAUTIONS 1 1 FEATURES 3 2 PART NAMES AND FUNCTIONS 4 3 SPECIFICATION 6 4 OUTLINES AND DIMENSIONS 8 5 WIRING DIAGRAM 10 6 REFRIGERANT SYSTEM DIAGRAM 11 7 TROUBLE SHOOTING 12 8 DISASSEMBLY PROCEDURE 17 Floor Standing Type Series PFFY For use with the R410A R22 Exposed type Concealed type ...

Page 2: ...ult the dealer or an authorized technician If the air conditioner is installed improperly water leakage elec tric shock or fire may result After completing installation work make sure that refrigerant gas is not leaking If the refrigerant gas leaks and is exposed to a fan heater stove oven or other heat source it may generate noxious gases Do not reconstruct or change the settings of the protectio...

Page 3: ...the refrigerator oil to deteriorate Use a vacuum pump with a reverse flow check valve The vacuum pump oil may flow back into the refrigerant cycle and cause the refrigerator oil to deteriorate Do not use the following tools that are used with conventional refrigerants Gauge manifold charge hose gas leak detector reverse flow check valve refrigerant charge base vacuum gauge refriger ant recovery eq...

Page 4: ...FFY P15NRMU E PFFY P18NEMU E PFFY P18NRMU E PFFY P24NEMU E PFFY P24NRMU E 1 8 2 0 2 3 2 6 3 5 4 0 4 4 5 0 5 3 5 9 7 0 7 9 Floor Standing Type Series PFFY Models Cooling capacity Heating capacity kW 6000 6700 8000 9000 12000 13500 15000 17000 18000 20000 24000 27000 BTU h FEATURES 1 Concealed type Exposed type ...

Page 5: ...utton 0 Test run Button A 8 9 Filter Button Button B C D ON OFF Button Position of built in room temperature Set Time Button Ne ver expose the remote controller to direct sunlight Doing so can result in the erroneous measure ment of room temperature Never place any obstacle around the lower right hand section of the remote controller Doing so can result in the erroneous measurement of room tempera...

Page 6: ...Y DEFROST TEMP A B C E P M F K D O L G N I H J Q A Current time Timer B Centralized control C Timer OFF D Timer indicator E Operation mode COOL DRY AUTO FAN HEAT F Locked indicator G H Set temperature I Power ON J Louver K L Ventilation M N O P Filter sign Set effective for 1 hr Sensor position Room temperature Airflow Fan speed ...

Page 7: ... 0 8 5 11 0 10 0 13 0 10 0 14 0 cfm 194 229 194 229 247 317 300 388 353 459 353 494 External static pressure Pa 208V 230V Noise level Low High 2 dB A 208V 36 41 36 41 37 41 38 43 38 43 40 46 230V 36 41 36 41 37 41 38 43 38 43 40 46 Filter Standard filter Model Item PFFY P06NRMU E PFFY P08NRMU E PFFY P12NRMU E PFFY P15NRMU E PFFY P18NRMU E PFFY P24NRMU E Power sourse 208 230V 60Hz Capacity 1 Coolin...

Page 8: ... S 300V 10A Fuse Indoor con troller board Power supply terminal bed Transmission terminal bed OFF 130 C 5 C ON 90 C 20 C Room temperature thermistor Fan motor with Inner thermostat 4 pole OUTPUT 15W CU 0206B A 4 pole OUTPUT 15W CU 0206B A 4 pole OUTPUT 18W CU 0207B A 4 pole OUTPUT 30W CU 0303B A 4 pole OUTPUT 35W CRC4415AB 4 pole OUTPUT 50W CU 0507B A Symbol DC12V Stepping motor drive port dimensi...

Page 9: ...ø9 52 3 8 ø6 35 1 4 ø15 88 5 8 ø12 7 1 2 970 38 1 4 730 28 3 4 610 24 1 16 970 38 1 4 730 28 3 4 610 24 1 16 1000 39 3 8 760 29 15 16 640 25 7 32 960 37 13 16 720 28 3 8 600 23 5 8 960 37 13 16 720 28 3 8 600 23 5 8 1000 39 3 8 760 29 15 16 640 25 7 32 1050 41 11 32 1170 46 1 16 1410 55 17 32 1410 55 17 32 1170 46 1 16 1050 41 11 32 ø15 88 5 8 ø12 7 1 2 ø12 7 1 2 ø12 7 1 2 ø12 7 1 2 ø9 52 3 8 ø6 3...

Page 10: ...ø6 35 1 4 ø6 35 1 4 ø12 7 1 2 ø12 7 1 2 ø12 7 1 2 ø12 7 1 2 ø12 7 1 2 4 ø9 52 3 8 ø9 52 3 8 ø15 88 5 8 ø15 88 5 8 7 5 7 Dimensions Model 5 4 F E D C B A 2 1 2 1 300 11 13 16 170 6 23 32 75 3 639 25 3 16 10 7 16 49 1 15 16 3 7 8 30 1 3 16 120 4 3 4 76 3 3 5 16 220 8 11 16 106 4 3 16 167 6 5 8 5 8 132 5 1 4 90 3 9 16 310 12 1 4 100 3 15 16 430 16 15 16 50 1 31 32 35 1 13 32 45 1 25 32 90 3 9 16 29 1...

Page 11: ...ntrally control CN51 Connector HA terminal A CN41 Connector Centrally control CN32 Power supply Remote controller LED2 Power supply I B LED1 SW7 A B Transmission terminal bed TB15 MF C I B A B F T LEV TH21 TH22 SW11 A B SW12 A B SW1 A B SW2 I B SW3 I B TH23 SW14 A B SW4 I B SYMBOL EXPLANATION SYMBOL NAME Fuse AC250V 6 3A T Transformer Electronic linear expan valve Fan motor Capacitor for MF Indoor...

Page 12: ...ansion valve Gas pipe Flare connection Gas pipe PEFY P06 08 12 15NEMU E PEFY P06 08 12 15NRMU E Capacity Item ø 12 7 1 2 ø 12 7 1 2 R410A R22 Liquid pipe ø 6 35 1 4 ø 6 35 1 4 ø 15 88 5 8 ø 9 52 3 8 ø 15 88 5 8 ø 15 88 5 8 ø 9 52 3 8 ø 9 52 3 8 R410A R22 mm in PEFY P18NEMU E PEFY P18NRMU E PEFY P24NEMU E PEFY P24NRMU E REFRIGERANT SYSTEM DIAGRAM 6 ...

Page 13: ...Orange Red 4 6 Blue Brown 1 2 3 1 2 3 CNT T CN3T Red Blue Blue White 1 2 3 4 5 6 LEV White Yellow Orange Blue Red Brown CN60 Parts name Check points 1 Blue Black Red White Yellow White Relay connector C PFFY P06 18 NEMU E NRMU E PFFY P24 NEMU E NRMU E Motor terminal or Relay connector Normal Abnormal Open or short Measure the resistance between the terminals using a tester at 20 C 68 F Motor termi...

Page 14: ...tor TH22 Gas pipe temparature thermistor TH23 Drain sensor DS Thermistor R0 15kΩ 3 Fixed number of B 3480kΩ 2 Rt 15exp 3480 0 C 15kΩ 10 C 9 6kΩ 20 C 6 3kΩ 25 C 5 2kΩ 30 C 4 3kΩ 40 C 32 F 50 F 68 F 77 F 86 F 104 F 3 0kΩ Thermistor for lower temperature Linear expansion valve 1 Operation summary of the linear expansion valve Linear expansion valve open close through stepping motor after receiving th...

Page 15: ...losed all the way It is not necessary to exchange the linear expansion valve if the leakage is small and not making any trouble Thermistor TH21 Linear expansion valve Motor will idle and make ticking noise when motor is operated while the linear expansion valve is locked This ticking sound is the sign of the abnormality Check the color of lead wire and missing terminal of the con nector Exchange t...

Page 16: ...models At delivery All models Refer to the next page for SW2 SW3 setting SW2 SW3 SW4 1 In case using M NET remote controller address is set by rotary switches SW11 SW12 It is not necessary setting address in case of using unit remote controller 2 Indoor unit address setting rule is different by each field work Refer to install manual of outdoor unit operate the address setting 3 Setting the addres...

Page 17: ...ection SW2 Capacity code setting SW1 Mode Selection Switch Pole Function Built in remote controller Indoor unit Set while the unit is off At delivery Set for each capacity Set while the unit is off Note 1 At cooling mode each angle can be used only 1 hour Set while the unit is off Operation by switch Remarks ON OFF 1 2 3 4 5 6 PFFY P12NEMU E PFFY P15NRMU E PFFY P08NRMU E ON OFF 1 2 3 4 5 6 ON OFF ...

Page 18: ...ng the front panel A 1 Remove the fixing screws two of the front panel A Fig 1 2 Hold the bottom of the front panel with your hands and gently lift it The front panel should fall down forward Fig 2 2 Removing the control box cover B 1 Remove the fixing screws two of the cover B and remove the cover Fig 3 OPERATING PROCEDURE PHOTOS ...

Page 19: ...en the control panel cover A remove the fixing screws two of the securing cover Fig 1 2 Pull up the side casing B Fig 2 OPERATING PROCEDURE PHOTOS 2 Removing the thermistor 1 Remove the fixing screws three remove the cover C and D Fig 3 2 Remove the thermistor gas E and the thermistor liquid F Fig 4 Be careful removing heavy parts ...

Page 20: ...fixing screw of the side frame by the control box Fig 1 2 Slide the drainpan in the direction of the arrow 8 4 DRAINPAN 1 Removing the thermistor 1 Remove the thermistor under the control box 8 3 THERMISTOR Intake air temperature detection PHOTOS OPERATING PROCEDURE Be careful removing heavy parts ...

Page 21: ... direction of the arrow 2 Removing the fan motor Fig 2 1 Remove the fixing screws two b of the fan cas ing A 2 Remove the fan motor shaft fixing screw and remove the fan casing A and sirroco fan 3 Remove the fixing screws two c of the motor fix tures two and remove the motor Notice In case of the Model PFFY 12 24 stick out the motor shafts on both side of the motor Be careful removing heavy parts ...

Page 22: ...ing 1 Remove the fixing screws six and remove the casing Fig 1 2 Removing the cover1 2 with procedure 8 2 Fig 2 3 Removing the Heat exchanger 1 Remove the fixing screws four and remove the heat exchanger support Fig 3 2 Remove the heat exchanger moving from side to side Be careful removing heavy parts ...

Page 23: ...fixing screws nine of the plate A and remove the plate Fig 1 2 Removing the air diffuser ass y 1 Remove the fixing screws eight of the air diffuser ass y B and remove it Fig 2 Note Without this section almost the disassembly procedures are same as Exposed type PFFY NEMU and Concealed type PFFY NRMU Be careful removing heavy parts ...

Page 24: ... OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Issued in Feb 2014 HWE0515A Printed in Japan New publication effective Feb 2014 Specifications subject to change without notice ...

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