Mitsubishi Electric Mr.SLIM PEAD-A12AA7 Service Manual Download Page 1

Page: 1 / 48

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

Model name

Series PEAD

2016

PEAD-A12AA7
PEAD-A18AA7
PEAD-A24AA7
PEAD-A30AA7
PEAD-A36AA7
PEAD-A42AA7

INDOOR UNIT

Summary of Contents for Mr.SLIM PEAD-A12AA7

Page 1: ...SPLIT TYPE HEAT PUMP AIR CONDITIONERS SERVICE MANUAL Model name Indoor unit Series PEAD 2016 PEAD A12AA7 PEAD A18AA7 PEAD A24AA7 PEAD A30AA7 PEAD A36AA7 PEAD A42AA7 INDOOR UNIT ...

Page 2: ...ES AND FUNCTIONS 4 3 SPECIFICATION 5 4 FAN PERFORMANCE AND CORRECTED AIR FLOW 8 5 SOUND PRESSURE LEVELS 15 6 OUTLINES DIMENSIONS 21 7 WIRING DIAGRAM 23 8 REFRIGERANT SYSTEM DIAGRAM 24 9 HEATER CONTROL 25 10 TROUBLESHOOTING 28 11 DISASSEMBLY PROCEDURE 41 ...

Page 3: ...erant and the efficiency will be lowered Do not use refrigerant other than R410A If other refrigerant R22 etc is used chlorine in refrigerant can cause deterioration of refrigerant oil etc Use a vacuum pump with a reverse flow check valve Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc Use the following tools specifically designed for us...

Page 4: ...Charge hose Only for R410A Use pressure performance of 5 09MPa G or over 3 Electronic scale 4 Gas leak detector Use the detector for R134a R407C or R410A 5 Adaptor for reverse flow check Attach on vacuum pump 6 Refrigerant charge base 7 Refrigerant cylinder Only for R410A Top of cylinder Pink Cylinder with syphon 8 Refrigerant recovery equipment 2 PART NAMES AND FUNCTIONS Indoor Unit In case of bo...

Page 5: ...eld drain pipe O D mm in 32 1 1 4 Dimensions W mm in 900 35 7 16 D mm in 732 28 7 8 H mm in 250 9 7 8 Weight kg lbs 26 58 INDOOR UNIT Service Ref PEAD A18AA7 Power supply phase cycle voltage 1 phase 60Hz 208 230V Max Fuse Size A 15 Min Circuit Ampacity A 1 69 WHUQDO QLVK Galvanized sheets Heat exchanger Plate fin coil Fan Fan drive No Sirocco fan 1 Fan motor output kW 0 085 Fan motor F L A 1 35 LU...

Page 6: ... pipe O D mm in 32 1 1 4 Dimensions W mm in 1100 43 5 16 D mm in 732 28 7 8 H mm in 250 9 7 8 Weight kg lbs 31 69 INDOOR UNIT Service Ref PEAD A30AA7 Power supply phase cycle voltage 1 phase 60Hz 208 230V Max Fuse Size A 15 Min Circuit Ampacity A 2 73 WHUQDO QLVK Galvanized sheets Heat exchanger Plate fin coil Fan Fan drive No Sirocco fan 2 Fan motor output kW 0 121 Fan motor F L A 2 18 LUÀRZ RZ 0...

Page 7: ... pipe O D mm in 32 1 1 4 Dimensions W mm in 1400 55 1 8 D mm in 732 28 7 8 H mm in 250 9 7 8 Weight kg lbs 39 86 INDOOR UNIT Service Ref PEAD A42AA7 Power supply phase cycle voltage 1 phase 60Hz 208 230V Max Fuse Size A 15 Min Circuit Ampacity A 3 50 WHUQDO QLVK Galvanized sheets Heat exchanger Plate fin coil Fan Fan drive No Sirocco fan 2 Fan motor output kW 0 244 Fan motor F L A 2 80 LUÀRZ RZ 0L...

Page 8: ...0 120 40 0 161 50 0 201 60 0 241 70 0 281 Airflow rate m3 min cfm External static pressure Pa in WG 0 0 10 0 040 20 0 080 30 0 120 40 0 161 50 0 201 60 0 241 70 0 281 80 0 321 90 0 361 Airflow rate m3 min cfm External static pressure Pa in WG 0 0 50 0 201 100 0 401 150 0 602 200 0 803 Airflow rate m3 min cfm External static pressure Pa in WG Limit Low Middle High Rated point Limit Low Middle High ...

Page 9: ...t Low Middle High Rated point 0 0 10 0 040 20 0 080 30 0 120 40 0 161 50 0 201 80 0 321 70 0 281 80 0 321 70 0 281 100 0 401 90 0 361 60 0 241 10 353 15 530 20 706 Limit Low Middle High Rated point 0 0 100 0 401 50 0 201 150 0 602 100 0 401 150 0 602 200 0 803 Airflow rate m3 min cfm 10 353 15 530 20 706 Airflow rate m3 min cfm Limit Low Middle High Rated point 0 0 50 0 201 10 353 15 530 20 706 Li...

Page 10: ...61 50 0 201 60 0 241 70 0 281 80 0 321 90 0 361 Airflow rate m3 min cfm External static pressure Pa in WG 10 353 15 530 20 706 25 883 30 1059 0 0 50 0 201 100 0 401 150 0 602 200 0 803 Airflow rate m3 min cfm External static pressure Pa in WG 10 353 15 530 20 706 25 883 30 1059 Limit Low Middle High Rated point Limit Low Middle High Rated point Limit Low Middle High Rated point Limit Low Middle Hi...

Page 11: ...602 200 0 803 Airflow rate m3 min cfm External static pressure Pa in WG 10 353 15 530 20 706 25 883 30 1059 0 0 10 0 040 20 0 080 30 0 120 40 0 161 50 0 201 60 0 241 70 0 281 80 0 321 100 0 401 90 0 361 Airflow rate m3 min cfm External static pressure Pa in WG 10 353 15 530 20 706 25 883 30 1059 Limit Low Middle High Rated point Limit Low Middle High Rated point Limit Low Middle High Rated point L...

Page 12: ... 40 1412 45 1589 10 353 15 530 20 706 25 883 30 1059 35 1236 40 1412 45 1589 0 0 50 0 201 100 0 401 150 0 602 200 0 803 Airflow rate m3 min cfm External static pressure Pa in WG 0 0 10 0 040 20 0 080 30 0 120 40 0 161 50 0 201 60 0 241 70 0 281 80 0 321 100 0 401 90 0 361 Airflow rate m3 min cfm External static pressure Pa in WG Limit Low Middle High Rated point Limit Low Middle High Rated point L...

Page 13: ...0 201 100 0 401 150 0 602 200 0 803 Airflow rate m3 min cfm External static pressure Pa in WG 0 0 10 0 040 20 0 080 30 0 120 40 0 161 50 0 201 60 0 241 70 0 281 80 0 321 100 0 401 90 0 361 Airflow rate m3 min cfm Airflow rate m3 min cfm 15 530 20 706 25 883 30 1059 35 1236 40 1412 45 1589 External static pressure Pa in WG Limit Low Middle High Rated point Limit Low Middle High Rated point Limit Lo...

Page 14: ...MANCE AND CORRECTED AIR FLOW 0 5 10 15 0 10 20 30 40 External static pressure Pa in WG Airflow rate m3 min cfm A24 30 A36 42 353 706 1412 1059 0 0 020 0 040 0 0 060 A12 18 PEAD A12 18 24 30 36 42AA7 Air filter 208 230V 60Hz ...

Page 15: ...50 500 1k 2k 4k 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 63 125 250 500 1k 2k 4k 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 ...

Page 16: ... 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 63 125 250 500 1k 2k 4k 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 ...

Page 17: ... 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 63 125 250 500 1k 2k 4k 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 ...

Page 18: ... 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 63 125 250 500 1k 2k 4k 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 ...

Page 19: ... 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 63 125 250 500 1k 2k 4k 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 ...

Page 20: ... 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 30 0 35 0 40 0 45 0 50 0 55 0 60 0 65 0 70 0 63 125 250 500 1k 2k 4k 8k NC 60 NC 50 Approximate minimum audible limit on continuous noise NC 40 Octave band center frequencies Hz NC 20 NC 30 High Middle Low 0 0 5 0 10 0 15 0 20 0 25 0 ...

Page 21: ...ransmission Note 4 Control box O Dø32 1 1 4 Top Top Bottom view Top Bottom Inlet air side view Outlet air side view Opposite piping side view Piping side view 2X2 ø2 9 1 8 43 5 16 55 1 8 45 7 16 57 1 4 59 1 16 53 9 16 47 1 4 41 3 4 39 3 8 51 3 16 41 11 16 53 1 2 2Liquid pipe 1Gas pipe 1058 1358 1300 Model 1200 11 1060 1100 1154 1400 ø15 88 5 8 1454 1500 ø9 52 3 8 1360 14 1000 PEAD A24 30AA7 PEAD A...

Page 22: ...rrow Z Bottom of indoor unit Supply air Intake air Supply air Supply air Supply air Intake air Intake air Unit mm in Model PEAD A24 30AA7 PEAD A36 48AA7 P N K L M G 0 0 0 9 C 88 0 3 3 B9 49 42 Access door 2 is not required if enough space is available below the unit for a maintenance worker to work in 1 When a space of 300mm or more is available below the unit between the unit and the ceiling Fig ...

Page 23: ...250V 6 3A RU RECEIVING UNIT CN32 CONNECTOR REMOTE SWITCH ZNR01 02 VARISTOR BZ1 BUZZER CN41 CONNECTOR HA TERMINAL A DSA ARRESTOR LED1 LED RUN INDICATOR CN51 CONNECTOR CENTRALLY CONTROL X01 AUX RELAY SW1 SWITCH HEATING ON OFF CN90 CONNECTOR WIRELESS X10 AUX RELAY SW2 SWITCH COOLING ON OFF CN105 CONNECTOR RADIO FREQUENCY INTERFACE TH1 INTAKE AIR TEMP THERMISTOR R B WIRED REMOTE CONTROLLER BOARD LED1 ...

Page 24: ...stor TH2 Pipe temperature Liquid Distributor with strainer 50 Thermistor TH5 Cond Eva temperature Thermistor TH1 Room temperature Refrigerant flow in cooling Refrigerant flow in heating Strainer 50 Strainer 50 Heat exchanger Refrigerant GAS pipe connection Flare Refrigerant LIQUID pipe connection Flare ...

Page 25: ...r unit control board 2nd heater Heater output from CN24 2 blue on the indoor unit control board 9 1 2 Function setting Table1 shows how the heater is controlled Select the desired pattern in the table below and set the Function on the indoor unit as shown in Table 1 Table 1 Function table Mode No Function Initial setting 11 23 1 1 No control of heater 1st and 2nd heater output are always OFF 1 2 2...

Page 26: ...ng Remote controller setting 25 3 Refer to the Installation Manual for function settings 9 3 PAC YU25HT OPTIONAL PARTS INSTALLATION The following section describes installation of the External Heater Adapter that connects to PEAD A AA7 series indoor unit This products is the special wiring parts to drive an electric heater with the air conditioner 1 Parts list Ƈ KHFN WKDW WKH IROORZLQJ SDUWV DUH L...

Page 27: ...r at both ends of the relay coil Ƈ7KH OHQJWK RI WKH HOHFWULFDO ZLULQJ IRU WKH 3 8 7 LV PHWHUV IW Ƈ7R H WHQG WKLV OHQJWK XVH VKHDWKHG FRUH FDEOH Control cable type CVV CVS CPEV or equivalent Cable size 0 5 mm2 1 25 mm2 16 to 22 AWG Don t extend the cable more than 10 meters 32ft Recommended circuit Wiring diagram 1 phase power supply 208V 230V 60Hz Control board FS1 2 Thermal fuse H1 H2 Heater 26H ...

Page 28: ...Take care the followings during servicing 1 Before servicing the air conditioner be sure to turn off the remote controller first to stop the main unit and then turn off the breaker 2 When removing the indoor controller board hold the edge of the board with care NOT to apply stress on the components 3 When connecting or disconnecting the connectors hold the housing of the connector DO NOT pull the ...

Page 29: ...ED display of the outdoor controller board 2 UP Compressor overcurrent interruption 3 U3 U4 Open short of outdoor unit thermistors 4 UF Compressor overcurrent interruption When compressor locked 5 U2 Abnormal high discharging temperature 49C worked insufficient refrigerant 6 U1 Ud Abnormal high pressure 63H worked Overheating safeguard operation 7 U5 Abnormal temperature of heat sink 8 U8 Outdoor ...

Page 30: ...ena takes place No signals from the remote controller are accepted OPE lamp is blinking The buzzer makes a short ping sound Note Operation is not possible for about 30 seconds after cancellation of function selection Correct operation For description of each LED LED1 2 3 provided on the indoor controller refer to the following table LED1 power for microcomputer Indicates whether control power is s...

Page 31: ...istics refer to P1 above 2 Check contact failure of connector CN44 on the indoor controller board Refer to 10 5 Turn the power on again and check restart after inserting connector again 4 Check pipe liquid temperature with remote controller in test run mode If pipe liquid temperature is extremely low in cooling mode or high in heating mode refrigerant circuit may have defective 5 Check pipe liquid...

Page 32: ... 5 Check outdoor fan motor 6 8 Check operating condition of refrigerant circuit P8 Pipe temperature Cooling mode Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes after compressor start and 6 minutes after the liquid or condenser evaporator pipe is out of cooling range Note 1 It takes at least 9 minutes to detect Note 2 Abnormality P8 is not detected in drying mo...

Page 33: ...eiving circuit of indoor controller board of refrigerant address 0 6 Noise has entered into the transmission wire of remote controller 1 Check disconnection or looseness of indoor unit or transmission wire of remote controller 2 Set one of the remote controllers main If there is no problem with the action above 3 Check wiring of remote controller Total wiring length max 500m Do not use cable 3 or ...

Page 34: ...entered into outdoor control wire 1 3 Turn the power off and on again to check If abnormality generates again replace indoor controller board Fb Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board 1 Defective indoor controller board 1 Replace indoor controller board E1 or E2 Remote controller control board 1 Abnormal if data c...

Page 35: ... controller board is defective 2 LED2 on indoor controller board is blinking When LED1 on indoor controller board is also blinking Connection failure of indoor outdoor unit connecting wire When LED1 is lit Check indoor outdoor unit connecting wire for connection failure 1 Mis wiring of remote controller wires Under twin triple indoor unit system 2 or more indoor units are wired together 1 Check th...

Page 36: ...oller board 1 Connect to the indoor controller board 1 Connect to the indoor controller board 1 Connect to the indoor power board 1 Connect to the indoor power board 1 Connect to the indoor power board 1 VFG Voltage on the side of PC51 and C25 Same with the voltage between 7 and 4 of CNMF VCC Voltage between the C25 pins 15 VDC Same with the voltage between 5 and 4 of CNMF Vsp Voltage between the ...

Page 37: ...rd HA terminal A CN44 Thermistor liquid condenser evaporator temperature CN4F Float thermistor CN20 Thermistor Inlet temperature CN24 Heater control 12VDC CN4Y For fan control CN3C Indoor outdoor transmission 0 24VDC CN90 Wireless remote controlelr 1 Connect to the indoor controller board 1 Connect to the indoor controller board 1 Connect to the indoor controller board 1 Connect to the indoor powe...

Page 38: ...with build in motor Current detecting resistor Regulator Hall IC Motor winding Power device Pre driver Vm Power supply for motor Vcc Power supply for control Vsp Speed command voltage PG Pulse output for rotation GND 10 7 Thermistor Thermistor Characteristic graph Room temperature thermistor TH1 Pipe temperature thermistor TH2 Condenser evaporator temperature thermistor TH5 Thermistor R0 Nȍ L HG Q...

Page 39: ...drain pump DP Replace indoor controller board Measuring points Resistance pin 1 pin 4 pin 5 pin 4 50kΩ pin 6 pin 4 150kΩ pin 7 pin 4 Replace indoor controller board I B Replace fan motor MF Replace indoor controller board Is the resistance of the fan motor normal Refer to below table Does the voltage between pin 7 and pin 4 of connector CNMF repeat 0V and 5V Replace the fan motor Is the voltage no...

Page 40: ...2AA7 ON 1 2 3 4 5 J41 J42 Pair number setting with wireless remote controller Wireless remote controller setting Control PCB setting J41 J42 0 1 2 3 9 Settings at time of factory shipment Wireless remote controller 0 Control PCB for both J41 and J42 Four pair number settings are supported The pair number settings of the wireless remote controller and indoor control PCB J41 J42 are given in the tab...

Page 41: ...EAD A36AA7 PEAD A42AA7 1 Control box 1 Removing the control box cover 1 Remove the two fixing screws on the cover A to remove it 7LJKWHQ VFUHZV WR D WRUTXH RI 1āP A Fig 1 Fig 2 2 Thermistor Intake air 1 Remove the control box cover according to the procedure in section 1 1 Pull out the thermistor holder B and thermistor C on the control box B C Fig 3 ...

Page 42: ...h up the tab on the filter and pull out the filter in the direction of the arrow 1 2 Remove the fixing screws on the bottom plate D E to remove it 7LJKWHQ VFUHZV WR D WRUTXH RI 1āP D E Fig 4 2 Removing the drainpan 1 Pull out the drain pan in the direction of the arrow 2 Note Drain the water out of the drain pan before removing it Fig 5 ...

Page 43: ...ng to the procedure in section 3 2 Removing the Heat exchanger cover 1 Remove the four fixing screws on the heat exchanger cover F to remove it 7LJKWHQ VFUHZV WR D WRUTXH RI 1āP F Fig 6 3 Removing the thermistor 1 Remove the thermistor G from the thermistor holder H on the copper tube Thermistor size Liquid pipe ø8mm Condenser evaporator ø6mm G H Fig 7 ...

Page 44: ...1āP J Fig 8 2 Removing the fan casing bottom half 1 Squeeze the tabs on the fan casing to remove it in the direction of arrow 2 Fig 9 3 Removing the motor cable 1 Remove the motor cable threw the rubber bush 4 Removing the fan motor and the Sirocco fan 1 Remove the two motor fixing screws to remove the motor and the Sirocco fan in the direction of arrow 3 7LJKWHQ VFUHZV WR D WRUTXH RI 1āP Fig 10 2...

Page 45: ...n section 3 2 Remove the heat exchanger cover according to the procedure in section 4 2 3 Removing the cover 1 Remove the five fixing screws on the cover WR UHPRYH LW 7LJKWHQ VFUHZV WR D WRUTXH RI 1āP K Fig 12 4 Removing the Heat exchanger 1 Remove the fixing screws on the heat exchanger L to remove it 7LJKWHQ VFUHZV WR D WRUTXH RI 1āP L Fig 13 ...

Page 46: ...46 HWE16080 ...

Page 47: ...47 HWE16080 ...

Page 48: ...www MitsubishiElectric com HWE16080 New publication effective Nov 2016 Specifications subject to change without notice ...

Search results

Summary of Contents for Mr.SLIM PEAD-A12AA7

Reviews:

Related manuals for Mr.SLIM PEAD-A12AA7

Brands by name

Popular brands

Mitsubishi Electric Mr.SLIM PEAD-A12AA7, Service Manual

Search results

Summary of Contents for Mr.SLIM PEAD-A12AA7

Reviews:

Related manuals for Mr.SLIM PEAD-A12AA7

Brands by name

Popular brands