Mitsubishi Electric PLP-6EAJ Service Manual Download Page 1

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SERVICE MANUAL

CONTENTS

1. REFERENCE MANUAL................................... 2

2. SAFETY PRECAUTION................................... 3

3. PARTS NAMES AND FUNCTIONS................. 4

4. SPECIFICATIONS............................................ 9

5. NOISE CRITERION CURVES......................... 12

6. OUTLINES AND DIMENSIONS...................... 14

7. WIRING DIAGRAM .........................................15

8. REFRIGERANT SYSTEM DIAGRAM............ 16

9. TROUBLESHOOTING....................................17

10. SPECIAL FUNCTION .....................................32

11. DISASSEMBLY PROCEDURE....................... 38

INDOOR UNIT

Model name
indication for
MAIN UNIT

PARTS CATALOG (OCB626)

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS

Model name
indication for GRILLE

WIRED REMOTE

CONTROLLER

(Option)

WIRELESS REMOTE

CONTROLLER

(Option)

No. OCH626

REVISED EDITION-A

November 2016

Notes:

• This manual describes ser

vice data of the indoor units

only.

• RoHS compliant products

have <G> mark on the spec

name plate.

Revision:

• Added the model names of

GRILLE to the cover page in

REVISED EDITION-A.

• Some other descriptions have

been also modified.

OCH626 is void.

Indoor unit

[Model Name] [Service Ref.]

PLA-RP35EA

PLA-RP50EA

PLA-RP60EA

PLA-RP71EA

PLA-RP100EA

PLA-RP125EA

PLA-RP140EA

PLA-RP35EA.UK
PLA-RP50EA.UK
PLA-RP60EA.UK
PLA-RP71EA.UK
PLA-RP100EA.UK
PLA-RP125EA.UK
PLA-RP140EA.UK

Grille model

[Model Name] [Service Ref.]

PLP-6EA

PLP-6EAE

PLP-6EAL

PLP-6EALE

PLP-6EAJ

PLP-6EAJE

PLP-6EALM

PLP-6EALME

PLP-6EA PLP-6EAR1
PLP-6EAE PLP-6EAER1
PLP-6EAL PLP-6EALR1
PLP-6EALE PLP-6EALER1
PLP-6EAJ
PLP-6EAJE
PLP-6EALM
PLP-6EALME

Summary of Contents for PLP-6EAJ

Page 1: ...ISED EDITION A November 2016 Notes This manual describes ser vice data of the indoor units only RoHS compliant products have G mark on the spec name plate Revision Added the model names of GRILLE to the cover page in REVISED EDITION A Some other descriptions have been also modified OCH626 is void Indoor unit Model Name Service Ref PLA RP35EA PLA RP50EA PLA RP60EA PLA RP71EA PLA RP100EA PLA RP125EA...

Page 2: ...Z KA60VA6 SUZ KA71VA6 OCH646 OCB646 PUHZ P100VHA5 PUHZ P100YHA3 PUHZ P125VHA4 PUHZ P125YHA2 PUHZ P140VHA4 PUHZ P140YHA2 PUHZ SHW112VHA PUHZ SHW112 140YHA OCH647 OCB647 PUHZ P200YKA2 UK PUHZ P250YKA2 UK PUHZ P100VHA5 UK PUHZ P100YHA3 UK PUHZ P125VHA4 UK PUHZ P125YHA2 UK PUHZ P140VHA4 UK PUHZ P140YHA2 UK PUMY P112 125 140VKM3 PUMY P112 125 140YKM3 PUMY P112 125 140YKME3 PUMY P112 125 140VKM3 BS PUMY...

Page 3: ...rioration of refrigerant oil etc Use the following tools specifically designed for use with R410A refrigerant The following tools are necessary to use R410A refrigerant Handle tools with care If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Do not use a charging cylinder If a charging cylinder is used the compositi...

Page 4: ...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 3 PARTS NAMES AND FUNCTIONS 3 1 INDOOR UNIT Drain pipe Filter Vane Gas pi...

Page 5: ...ing Auto Fan speed setting Set Temperature buttons Set Time button Sets the time Airflow button Changes up down airflow direction Mode button Changes operation mode Timer ON button Timer OFF button OFF ON button Fan Speed button Changes fan speed SET SEND button CANCEL button Up Down buttons Menu button i see button Reset button Remote controller display Battery replacement indicator Transmission ...

Page 6: ... See the Installation Manual Note All icons are displayed for explanation 5 6 1 2 3 4 Press to turn ON OFF the indoor unit 1 ON OFF button This lamp lights up in green while the unit is in operation It blinks while the remote controller is starting up or when there is an error Press to save the setting Main display Press to change the operation mode Main menu Press to move the cursor down Press to...

Page 7: ...High power Weekly timer Restriction Maintenance Initial setting ON OFF timer Auto OFF timer Temp range Operation lock Manual vane angle Main Sub Timer Main display Contrast Display details Auto mode Administrator password Language selection Service Input maintenance info Function setting Check Self check Maintenance password Remote controller check Test run Clock Auto descending panel Menu structu...

Page 8: ...the vane angle for each vane to a fixed position 3D i See sensor Use to set the following functions for 3D i see Sensor Air distribution Energy saving option Seasonal airflow Initial setting Main Sub When connecting 2 remote controllers one of them needs to be designated as a sub controller Clock Use to set the current time Main display Use to switch between Full and Basic modes for the Main displ...

Page 9: ...wer supply phase cycle voltage Input Running current External finish Grille Heat exchanger Fan Fan drive o No Fan motor output Airflow Low Medium2 Medium1 High External static pressure Booster heater Operation control Thermostat Noise level SPL Low Medium2 Medium1 High Field drain pipe O D Dimensions Weight W D H INDOOR UNIT PLA RP35EA UK UNIT 840 33 1 16 GRILLE 950 37 3 8 UNIT 840 33 1 16 GRILLE ...

Page 10: ...IT PLA RP125EA UK Mode Power supply phase cycle voltage Input Running current External finish Grille Heat exchanger Fan Fan drive o No Fan motor output Airflow Low Medium2 Medium1 High External static pressure Booster heater Operation control Thermostat Noise level SPL Low Medium2 Medium1 High Field drain pipe O D Dimensions Weight UNIT 840 33 1 16 GRILLE 950 37 3 8 UNIT 840 33 1 16 GRILLE 950 37 ...

Page 11: ...tion control Thermostat Noise level SPL Low Medium2 Medium1 High Field drain pipe O D Dimensions Weight W D H INDOOR UNIT PLA RP140EA UK Cooling 0 10 0 66 Heating 0 10 0 64 Single phase 50Hz 230 V Munsell 1 0Y 9 2 0 2 Plate fin coil Turbo fan direct o 1 0 120 24 26 29 32 0 direct blow Remote controller built in 36 39 42 44 32 1 1 4 UNIT 840 33 1 16 GRILLE 950 37 3 8 UNIT 840 33 1 16 GRILLE 950 37 ...

Page 12: ... APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 BAND CENTER FREQUENCIES Hz PLA RP71EA UK NOTCH SPL dB LINE High 34 Medium1 32 Medium2 30 Low 28 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 BAND CENTER FREQUENCIES Hz OCTAVE UKND SOUND PRESSURE LEVEL d...

Page 13: ...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 PLA RP125EA UK NOTCH SPL dB LINE High 44 Medium1 41 Medium2 37 Low 33 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 μbar 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 BAND CENT...

Page 14: ...LE 158 12 0 120 THE BOTTOM OF I SEE SENSOR SUSPENSION BOLT LOWER EDGE CONNECTED THE ATTACED DRAIN SOCKET CEILING DRAIN PIPE VP 25 CONNECTION GRILLE INDOOR UNIT OUTDOOR UNIT CONNECTING WIRE POWER SUPPLY WIRE ENTRY MAIN UNIT 1 2 SUSPENSION BOLT M10 OR W3 8 A B 40 17 5 0 60 50 70 58 140 170 105 628 190 150 CUTOUT HOLE CONNECTING TO BRANCH DUCT 175 BURRING HOLE PITCH SELF TAP 4 SCREWS 4 PLACES CONNECT...

Page 15: ...oor unit Refer to outdoor unit wiring diagram 1 Symbols used in wiring diagram above are Terminal block Connector 2 Indoor and outdoor connecting wires are made with polarities make wiring matching terminal numbers S1 S2 S3 3 Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring for servicing 4 This diagram shows the wiring of indoor and outdoor connec...

Page 16: ...om 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 PLA RP35EA UK PLA RP50EA UK PLA RP60EA UK PLA RP71EA UK PLA RP100EA UK PLA RP125EA UK PLA RP140EA UK 8 REFRIGERANT SYSTEM DIAGRAM OCH626A ...

Page 17: ...it after finishing service 3 There is no abnormality in electrical component controller board remote controller etc 1 Re check the abnormal symptom 2 Conduct troubleshooting and ascertain the cause of the trouble according to 9 4 TROUBLESHOOTING OF PROBLEMS 3 Continue to operate unit for the time being if the cause is not ascertained 4 There is no abnormality concerning of parts such as electrical...

Page 18: ... 11 Pb Indoor unit fan motor error 12 Fb Indoor unit control system error memory error etc 14 PL Refrigerant circuit abnormal E0 E3 Remote controller transmission error E1 E2 Remote controller control board error Output pattern B Errors detected by unit other than indoor unit outdoor unit etc Note The supported check codes may vary depending on the connected outdoor unit Wireless remote controller...

Page 19: ... protection device is not connected Reverse or open phase wiring for the outdoor unit s power terminal block Incorrect wiring between indoor and outdoor units incorrect polarity of S1 S2 S3 Remote controller wire short 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...

Page 20: ... resistance value of thermistor For characteristics refer to P1 above 2 Check contact failure of connector CN44 on the indoor controller board Refer to 9 7 TEST POINT DIAGRAM Turn the power on 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 r...

Page 21: ... THE PARTS 5 Check outdoor fan motor 67 Check operating condition of refrigerant circuit Heating mode 1 Check clogs of the filter 2 Remove blockage 4 Refer to 9 6 HOW TO CHECK THE PARTS 5 Check outdoor fan motor 6 8 Check operating condition of refrigerant circuit Pipe temperature Cooling mode Detected as abnormal when the pipe tem perature is not in the cooling range 3 min utes after compressor s...

Page 22: ... of connecting remote control ler max 2 units If the cause of trouble is not any of 1 3 above 4 Diagnose remote controllers a When RC OK is displayed Remote controllers have no problem Turn the power off and on again to check If abnormality generates again replace indoor controller board b When RC NG is displayed Replace remote controller c When RC E3 or ERC 00 66 is dis played noise may be causin...

Page 23: ... a signal for 3 minutes from outdoor controller circuit board a signal which allows outdoor controller circuit board to transmit signals 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 Remote controller control board 1 Abnormal if data cannot be read nor...

Page 24: ...ping 4 Abnormal operation no rotation of indoor fan Defective fan motor Defective indoor control board 5 Defective refrigerant circuit clogging 1 When this error occurs be sure to replace the 4 way valve 2 Check refrigerant pipes for disconnection or leakage 3 After the recovery of refrigerant vacuum dry the whole refrigerant circuit 4 Refer to section 9 6 2 DC Fan motor FAN MOTOR INDOOR CONTROLLE...

Page 25: ...block S1 and S2 When 220 240 V AC is not detected check indoor outdoor unit connecting wire for miswiring When 220 240 V AC is detected check 4 below 4 Check the fuse on indoor controller board Check the wiring connection If no problem is found indoor controller board is defective 1 Check the voltage of indoor power supply terminal block L N When 220 240 V AC is not detected check the power supply...

Page 26: ...Check the connection of remote controller wires in case of twin triple indoor unit system When 2 or more indoor units are wired in one refrigerant system connect remote controller wires to one of those units 2 Check the setting of refrigerant address in case of grouping control system If there are some units whose refrigerant addresses are 0 in one group set one of the units to 0 using SW1 3 6 on ...

Page 27: ...e controller When the remote controller does not function it is possible to activate emergency operation by using the indoor unit emergency operation switch SW1 SW2 of the wireless signal receiver board However if the indoor unit microcomputer has failed it is necessary to proceed with points 2 and 3 below as in the case of the wired remote controller 2 When you activate emergency operation of the...

Page 28: ...te 5 2 0 7 5 2 7 Blue Yellow M 1 2 3 Red Purple Black 1 Check if the drain float switch works properly 2 Check if the drain pump works and drains water properly in cooling operation 3 If no water drains confirm that the check code P5 will not be displayed 10 minutes after the operation starts Note The drain pump for this model is driven by the internal DC motor of controller board so it is not pos...

Page 29: ... and fan motor Self check Symptom The indoor fan cannot turn around 1 2 Power supply check Without fan motor connected Remove the fan motor Remove the fan motor connector CNMF and measure the voltage in the indoor controller circuit board TEST POINT 1 VDC between 1 and 4 of the fan motor connector VDC 280 V DC TEST POINT 2 VCC between 5 and 4 of the fan motor connector VCC 15 V DC Wiring recovery ...

Page 30: ...e output CNV Vane motor MV 12 V pulse output J41 J42 Jumper wire Pair No setting with wireless remote controller SW2 Capacity setting LED3 Communication Indoor outdoor SWE Jumper switch Emergency operation CN32 Remote switch CN41 HA terminal A CN2L Lossnay CN01 Connect to the terminal block TB4 Indoor outdoor connecting line 220 240 V AC F1 FUSE 6 3A 250 V LED1 Power supply I B CN3C Connect to the...

Page 31: ...te controller and indoor control PCB J41 J42 are given in the table on the left in the table indicates the jumper wire is dis connected Jumper wire Short Open The black square indicates a switch position MODELS MODEL SETTING PLA RP35EA ON OFF 1 2 3 4 5 SETTING PLA RP EA ON OFF 1 2 3 4 5 PLA RP50EA ON OFF 1 2 3 4 5 PLA RP100EA ON OFF PLA RP60EA ON OFF 1 2 3 4 5 PLA RP125EA ON OFF 1 2 3 4 5 PLA RP71...

Page 32: ...ation 1 Re storage operation Case Obstruction of the raising air intake grille before storage or malfunction of storage detection switch Re storage operation will be performed when the intake grille has been raised the set distance but the storage detection switch is not engaged In this case the operation below will be repeated up to 4 times 10 cm down 30 cm up 10 cm down 30 cm up 2 No load detect...

Page 33: ...3 4 5 6 ON OFF 2 SW2 on U B LOWERING DISTANCE SET UP 2 0m 2 4m 1 2m 1 6m Initial setting 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF LOWERING DISTANCE SET UP 3 6m 4 0m 2 8m 3 2m 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 Note 1 Symbols used in wiring diagram above are Connector Terminal block 2 The black square indicates a switch position Note The actu...

Page 34: ...ille Filter is not properly installed Intake grille is not hung with all 4 hooks Because the intake grille has finished lowering to the auto stop position This is the noise made when the string is winded and unwound This is the operational noise for placing the intake grille in securely The speeds of winding each string is slightly different Stop running the air conditioner and try again After rec...

Page 35: ...nd unit starts operation in conjunction with the 1st unit Once the actual room temperature goes down to 4 C below set point the 2nd unit stops operation automatically set point set temperature by R C remote controller 4 6 8 C selectable Number of operating units is determined according to the room temperature and set point When room temperature reaches higher than set point standby unit starts 2 u...

Page 36: ...setting 2nd unit cut in setting Setting contents Setting No Request code No 7 316 No 8 317 No 9 318 Rotation and Back up OFF Normal group control operation Monitoring the request code of current setting Setting No Request code No 1 310 No 2 311 No 3 312 No 4 313 No 5 314 No 6 315 Cut in function OFF Monitoring the request code of current setting Setting contents Rotation ON Alternating interval 28...

Page 37: ... with the F1 or F2 button Set each number 0 through 9 with the F3 or F4 button Note The initial maintenance password is 9999 4 Then press the button 5 Select Check with the F1 or F2 button and press the button 6 Select Request code with the F1 or F2 button and press the button 7 Set the Refrigerant address and Request code Select the item to be changed with the F1 or F2 button Select the required ...

Page 38: ...re 2 Electrical box cover Electrical box cover fixing screws Photo 1 2 Removing the air intake grille 1 Slide the knob of air intake grille toward the arrow to open the air intake grille See Figure 1 2 Remove the hook of drop prevention strap from the panel 3 Remove the air intake grille Hook of drop prevention strap Photo 2 Slide Intake grille Filter Grille Air intake grille 3 Removing the electr...

Page 39: ...ee Photo 1 and 2 2 Disconnect the connectors CNMF White for fan motor CNV White for vane motor CN5Y White for motor for i see Sensor Option CN4Z White for sensor for i see Sensor Option CN90 White for signal receiver Option CNP White for drain pump CN4F White for float switch CN44 White for thermistor TH2 TH5 CN01 Black for Indoor Outdoor connecting line CN3C Blue for Indoor Outdoor transmission D...

Page 40: ...otor 6 Remove the 3 rubber mounts Photo 5 Photo 8 Photo 6 Photo 7 Photo 9 Electrical box Bell mouth fixing screws Bell mouth Turbo fan Clamp 2 points Lead cover Coil plate Lead cover fixing screws Fan motor Figure 3 Cross section diagram Nut washer Fan motor 7 Removing the turbo fan 1 Remove the electrical box See Photo 3 and refer to procedure 6 2 Remove the bell mouth tapping screw 4 10 2 screws...

Page 41: ...n the 4 corner panel fixing screws tapping screw 4 16 See Figure 4 4 Slide the corner panel to the direction of the arrow 1 and remove the corner panel See Figure 4 5 Remove the 4 installation screws M5 28 See Photo 10 6 Release the 2 temporary hanging hooks to remove the grille See Photo 11 Installation screw Temporary hanging hook 10 Removing the drain pan 1 Remove the electrical box See photo 3...

Page 42: ...Pipe temperature liquid thermistor TH2 12 Removing the drain pump DP 1 Remove the drain pan Refer to procedure 10 2 Cut the hose band and remove the hose 3 Loosen the clamp of the drain pump 4 Remove the drain pump tapping screw 4 10 2 screws 2 hooks 5 Cut the drain pump base and lead wire fixing band See Figure 5 6 Remove the lead wire of the drain pump from the clamp of the drain pump base See F...

Page 43: ...cover tapping screw 4 10 3 screws 3 Remove the coil plate tapping screw 4 10 2 screws 4 Remove the heat exchanger fixing screws tapping screw 4 10 2 screws 5 Remove the coil support tapping screw 4 10 1 screw each RP35 60 1 coil support See photo 16 RP71 140 3 coil supports See photo 17 6 Remove the heat exchanger 13 Removing the float switch FS 1 Remove the drain pan Refer to procedure 10 2 Loose...

Page 44: ... 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN CCopyright 2016 MITSUBISHI ELECTRIC CORPORATION Issued Nov 2016 No OCH626 REVISED EDITION A Published Sep 2016 No OCH626 Made in Japan Specifications are subject to change without notice ...

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