Mitsubishi Electric Mr. Slim PKA-A24KA4 Скачать руководство пользователя страница 1 | Manualshive

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SERVICE MANUAL

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

Note:

•

This manual describes only

service data of the indoor
units.

•

RoHS compliant products

have <G> mark on the spec
name plate.

CONTENTS

1. REFERENCE MANUAL................................... 2
2. SAFETY PRECAUTION................................... 3
3. PART NAMES AND FUNCTIONS................... 4
  4. SPECIFICATIONS............................................ 7
  5. NOISE CRITERION CURVES.......................... 8
6. OUTLINES AND DIMENSIONS....................... 9
7. WIRING DIAGRAM......................................... 10
  8. REFRIGERANT SYSTEM DIAGRAM............ 11
9. TROUBLESHOOTING.................................... 12
10. SPECIAL FUNCTION..................................... 26
11. DISASSEMBLY PROCEDURE....................... 29

PARTS CATALOG (OCB488)

No. OCH488

REVISED EDITION-A

May 2011

ON/OFF

TEMP.

9700058

WIRED REMOTE

CONTROLLER

(Option)

INDOOR UNIT

Indoor unit

[Model names]

[Service Ref.]

PKA-A24KA4

PKA-A24KA4.TH

PKA-A30KA4

PKA-A30KA4.TH

PKA-A36KA4

PKA-A36KA4.TH

IR WIRELESS REMOTE

CONTROLLER

(Option)

ON/OFF

TEMP

Revision:

•

6. OUTLINES AND

DIMENSIONS has been modi-
fied in REVISED EDITION-A.

•

Some descriptions have been

modified.

•

Please void OCH488.

1
2
3
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Содержание Mr. Slim PKA-A24KA4

Страница 1: ...DIMENSIONS 9 7 WIRING DIAGRAM 10 8 REFRIGERANT SYSTEM DIAGRAM 11 9 TROUBLESHOOTING 12 10 SPECIAL FUNCTION 26 11 DISASSEMBLY PROCEDURE 29 PARTS CATALOG OCB488 No OCH488 REVISED EDITION A May 2011 ON OFF TEMP 9700058 WIRED REMOTE CONTROLLER Option INDOOR UNIT Indoor unit Model names Service Ref PKA A24KA4 PKA A24KA4 TH PKA A30KA4 PKA A30KA4 TH PKA A36KA4 PKA A36KA4 TH IR WIRELESS REMOTE CONTROLLER O...

Страница 2: ...ice Manual No PUZ A24 30 36NHA4 PUZ A24 30 36NHA4 BS PUY A24 30 36NHA4 PUY A24 30 36NHA4 BS OCH481 OCB481 Radio frequency interface Wired remote controller IR wireless remote controller ON OFF TEMP COOL DRY AUTO FAN HEAT RF thermostat Remote controller Optional parts ...

Страница 3: ...ant piping can cause deterio ration of refrigerant oil etc If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc The refrigerant oil applied to flare and flange connections must be ester oil ether oil or alkylbenzene oil in a smal...

Страница 4: ...verse 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 1 Cautions for service 1 Perform service after recovering the refrigerant left in unit completely 2 Do not release refrigerant in the air 3 After completing service charge the cycle with specified amount of refrigerant 4 W...

Страница 5: ... room temperature The room temperature display range 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 Vent...

Страница 6: ...y Displays when in timer operation or when setting timer button Sets any desired room temperature CLOCK display Displays the current time display Displays the order of timer operation display Displays whether timer is on or off Buttons used to set the hour and minute of the current time and timer settings h and min buttons Temperature setting display Indicates the desired temperature setting which...

Страница 7: ...cuit Ampacity External finish Heat exchanger Fan Fan drive No Fan motor output Fan motor Airflow Low Middle High External static pressure Operation control Thermostat Noise level Low Middle High Field drain pipe I D Dimensions Weight W D H INDOOR UNIT PKA A30KA4 TH White Munsell 1 0Y 9 2 0 2 0 056 0 36 16 5 8 Line flow fan direct 1 Dry 18 20 22 635 705 775 Wet 16 18 20 570 635 700 39 42 45 1170 46...

Страница 8: ...z APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE High NOTCH Low 49 SPL dB 43 LINE 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 OCTAVE BAND SOUND PRESSURE LEVEL dB 0dB 0 0002 μbar BAND CENTER FREQUENCIES Hz PKA A24KA PKA A30KA PKA A24KAL PKA A30KAL High Low 45 SPL dB 39 LINE NOTCH PKA A...

Страница 9: ...6 75 1 31 32 50 15 1 8 384 0 13 3 4 349 2 16 15 16 430 5 1 2 12 5 11 1 2 292 10 13 32 264 9 1 32 229 5 8 17 32 217 6 9 16 167 5 3 32 129 5 4 1 8 104 5 3 7 16 87 5 2 15 32 62 5 1 15 32 37 5 1 2 12 5 2 1 8 54 31 32 25 0 12 1 4 311 8 17 32 216 5 13 11 32 339 20 7 8 530 5 7 7 16 189 13 11 32 339 17 11 16 449 2 23 1 32 585 23 1 32 585 A 5 16 7 8 3 1 32 77 2 5 8 67 2 9 16 65 B Knockout hole for piping 1...

Страница 10: ...5 4kΩ Detect TH2 TH5 S W Notes 1 SymboIs used in wiring diagram above are Connector Terminal block 2 Indoor and outdoor connecting wires have poIarities make sure to match terminal numbers S1 S2 S3 for correct wirings 3 Since the outdoor side electric wiring may change be sure to check the outdoor unit electric wiring diagram for servicing 4 This diagram shows the wiring of indoor and outdoor conn...

Страница 11: ...ner 50 100 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 PKA A24KA4 TH PKA A30KA4 TH PKA A36KA4 TH ...

Страница 12: ... to 9 4 Troubleshooting by inferior phenomena The trouble is not reoccurring Logged Not logged Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor poor connection of wiring noise and etc Re check the symptom and check the installation environment refrigerant amount weather when the trouble occurred matters related to wiring and etc ...

Страница 13: ... refrigerant address of the indoor unit for the self diagnosis Note Set refrigerant address using the outdoor unit s DIP switch SW1 For more information see the out door unit installation manual If an air conditioner error occurs the indoor unit s sensor emits an intermit tent buzzer sound the operation lamp blinks and the error code is output It takes 3 seconds at most for error code to appear Th...

Страница 14: ...er of times IR wireless remote controller Wired remote controller Beeper sounds OPERATION INDICATOR lamp blinks Check code Number of times IR wireless remote controller Wired remote controller 1 P1 Intake sensor error P9 Pipe TH5 sensor error 2 P2 Pipe TH2 sensor error 3 E6 E7 Indoor outdoor unit communication error 4 P4 Float switch connector CN4F open 5 P5 PA Drain pump error Forced compressor s...

Страница 15: ...ected Reverse or open phase wiring for the outdoor unit s power terminal block L1 L2 GR 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 refer to the followi...

Страница 16: ...o P1 above Check contact failure of connector CN44 on the indoor controller board Refer to 9 7 Turn the power on and check restart after inserting connector again 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 defect Check pipe liquid temperature with remote contr...

Страница 17: ...c tive Defective outdoor fan control Overcharge of refrigerant Defective refrigerant circuit clogs Bypass circuit of outdoor unit is defective Cooling or drying mode Check clogs of the filter Remove blockage Refer to 9 6 Check outdoor fan motor Check operating condition of refrigerant circuit Heating mode Check clogs of the filter Remove blockage Refer to 9 6 Check outdoor fan motor Check operatin...

Страница 18: ...hen the above mentioned problem of are not applied Diagnose remote controllers a When RC OK is displayed remote con trollers 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 06 is dis played noise may be causing abnormality If the unit is not normal afte...

Страница 19: ...normal point and detection method Cause Countermeasure Fb Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board Defective indoor controller board Replace indoor controller board E1 or E2 Remote controller control board Abnormal if data cannot be read nor mally from the nonvolatile memory of the remote controller control board Er...

Страница 20: ...ctor Normal operation Each connector on vane motor side is disconnected or set ting the fixed vanes by wired remote controller Phenomena Cause Countermeasure 2 Receiver for IR wireless remote controller Weak batteries of IR wireless remote controller Contact failure of connector CNB on IR wireless remote controller board Insert failure Contact failure of connector CN90 on indoor con troller board ...

Страница 21: ...or unit operates as follows 1 Indoor fan is running at high speed Note on the IR wireless remote control When the remote control does not function it is possible to activate Emergency Operation by using the indoor unit Emergency Operation switch However if the indoor unit microprocessor has failed it is nesessary to proceed with points 2 and 3 below as in the case of the wired remote control 2 Whe...

Страница 22: ...r a detail Room temperature thermistor TH1 Liquid pipe thermistor TH2 Condenser evaporator temperature thermistor TH5 Normal 4 3k 9 6k Abnormal Open or short 9 6 1 Thermistor Thermistor Characteristic graph Room temperature thermistor TH1 Pipe temperature thermistor liquid TH2 Condenser evaporator temperature thermistor TH5 Thermistor R0 15k 3 Fixed number of B 3480 2 t Rt 15exp 3480 0 10 20 25 30...

Страница 23: ... connector VDC DC294 325V TEST POINT VCC between 4 and 3 of the fan connector VCC DC15V Wiring recovery Replace the indoor controller board Replace the fan motor Replace the indoor controller board Replace the fan motor Is the voltage normal Is there contact failure No Yes No Check the operation of fan END Yes OK Check the operation END OK Check method of DC fan motor fan motor indoor controller c...

Страница 24: ...e J41 J42 Pair No setting for IR wireless remote controller CN01 Connect to the Terminal block TB4 1 3 208 230VAC LED1 Power supply I B LED2 Power supply R B LED3 Transmission Indoor outdodr CN3C Transmission Indoor outdodr DC 0 24V CN30 Connector LLC CN22 Connect to the terminal block TB5 Remote controller connecting wire only PKA A KA CN2L Connector LOSSNAY SWE2 Emergency operation switch CN41 C...

Страница 25: ... are supported The pair number settings of the wireless remote 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 For product Spare parts Indoor controller board type JP3 With JP3 Without JP3 The black square indicates a switch position MODELS SETTING PKA A KA4 MODELS SETTING A24 A30 ON OFF 1 2...

Страница 26: ...on Outline of functions Main and sub units operate alternately according to the interval of rotation setting w Main and sub unit should be set by refrigerant address Outdoor Dip switch setting Refrigerant address 00 Main unit Refrigerant address 01 Sub unit When error occurs to one unit another unit will start operation Back up function System constraint This function is available only by the grou...

Страница 27: ...ck up function No 5 314 Rotation ON Alternating interval 3 day and back up function No 6 315 Rotation ON Alternating interval 5 day and back up function No 7 316 Rotation ON Alternating interval 7 day and back up function No 8 317 Rotation ON Alternating interval 14 day and back up function No 9 318 Rotation ON Alternating interval 28 day and back up function Setting No Request code Setting conten...

Страница 28: ...the button to perform function setting If above setting operations are done correctly Request code number will appear in data display area Example When the 311 of Request code number is set 311 appears on the screen Refererence You can check current request code number setting by setting the request code number 310 or 320 and pressing the button Example When the current setting is Setting No 2 Req...

Страница 29: ...2 Remove the front and side electrical box covers each 1 screw See Photo 2 3 Disconnect the connectors on the indoor controller board See Photo 3 4 Remove the switch board holder and open the cover 5 Pull out the indoor controller board toward you then remove the indoor controller board and switch board See Photo 3 6 Remove the holder of IR wireless remote controller board 7 Disconnect the connect...

Страница 30: ...over and pull out the vane motor unit 3 Remove 2 screws of the vane motor unit 4 Remove the vane motor from the vane motor unit 5 Disconnect the connector from the vane motor Screw of electrical box Drain hose Vane motor Nozzle assembly Screws of the vane motor unit Screws of the vane motor unit cover see the bottom PHOTOS OPERATION PROCEDURE Indoor controller board I B Terminal block TB4 Electric...

Страница 31: ...move 3 screws fixing the left side of the heat exchanger See Photo 9 10 Lift the heat exchanger and pull out the line flow fan to the lower left Photo 7 7 REMOVING THE LIQUID PIPE THERMISTOR AND COND EVA PIPE THERMISTOR 1 Remove the panel and the corner box Refer to step 1 2 Remove the electrical box covers Refer to step 2 3 Remove the water cut See Photo 2 4 Remove the liquid pipe thermistor and ...

Страница 32: ... step 1 2 Remove the electrical box covers 3 Remove the room temperature thermistor 4 Disconnect the connector CN20 on the indoor controller board Photo 11 Photo 12 Photo 13 Heat exchanger Water cut Indoor controller board I B Room temp thermistor TH1 Liquid pipe thermistor TH2 Lead wire for TH5 Connector for ground Heat exchanger PHOTOS OPERATION PROCEDURE HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI ...

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