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Mitsubishi Electric Mr.SLIM PKA-RP35GAL Service Manual
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Mitsubishi Electric Mr.SLIM PKA-RP35GAL Service Manual

Split-type, heat pump air conditioners split-type, air conditioners
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See also: Technical Data Book , Technical Data Manual
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS

SERVICE MANUAL

Indoor unit
[Model names]
PKA-RP35GAL
PKA-RP50GAL
PKH-P35GALH
PKH-P50GALH
Indoor unit
Remote controller
[Service Ref.]
PKA-RP35GAL
PKA-RP35GAL#1
PKA-RP50GAL
PKA-RP50GAL#1
PKH-P35GALH
PKH-P50GALH
Model name
indication
Revision :
• Please void OC330
Note :
• This manual describes only
• RoHS compliant products
CONTENTS
1. TECHNICAL CHANGES ...................................... 2
2. REFERENCE MANUAL ....................................... 2
3. SAFETY PRECAUTION ....................................... 3
4. PART NAMES AND FUNCTIONS ........................ 7
5. SPECIFICATIONS ................................................ 9
6. NOISE CRITERION CURVES ............................ 11
7. OUTLINES AND DIMENSIONS ......................... 12
8. WIRING DIAGRAM ............................................. 13
9. REFRIGERANT SYSTEM DIAGRAM ......................... 14
10. TROUBLE SHOOTING ....................................... 15
11. SPECIAL FUNCTION ......................................... 30
12. DISASSEMBLY PROCEDURE ........................... 33
13. PARTS LIST ........................................................ 37
14. RoHS PARTS LIST ............................................. 40
May 2008
No.OC330
REVISED EDITION-B
• PKA-RP35·50GAL#1 are
added in REVISEDEDITION-B
• Some discriptions have been
modified.
REVISED EDITION-A.
service data of the indoor
units.
have <G> mark on spec
name plate.
For servicing of RoHS
compliant products, refer to
the RoHS Parts List.
.

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Summary of Contents for Mitsubishi Electric Mr.SLIM PKA-RP35GAL

  • Page 1: Table Of Contents

    SPLIT-TYPE, AIR CONDITIONERS May 2008 No.OC330 REVISED EDITION-B SERVICE MANUAL Indoor unit [Service Ref.] Revision : [Model names] • PKA-RP35·50GAL#1 are PKA-RP35GAL added in REVISEDEDITION-B PKA-RP35GAL • Some discriptions have been PKA-RP35GAL#1 modified. PKA-RP50GAL • Please void OC330 PKA-RP50GAL REVISED EDITION-A.

  • Page 2: Technical Changes

    TECHNICAL CHANGES PKA-RP35GAL PKA-RP35GAL#1 PKA-RP50GAL PKA-RP50GAL#1 INDOOR CONTROLLER BOARD(I.B.) has been changed. REFERENCE MANUAL 2-1. OUTDOOR UNIT’S SERVICE MANUAL Service Ref. Service Manual No. PUHZ-RP35/50/60/71/100/125/140VHA OC334 PUHZ-RP100/125/140YHA PUHZ-RP71/100/125/140VHA OC337 PUHZ-RP200/250YHA OC338 (1)(2) PUHZ-RP200/250YHA OC339 PU(H)-P • VGAA.UK OC336 PU(H)-P • YGAA.UK PUHZ-P100/125/140VHA.UK...

  • Page 3: Safety Precaution

    SAFETY PRECAUTION 3-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. 3-2. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R407C Do not use the existing refrigerant piping. Use liquid refrigerant to seal the system. The old refrigerant and lubricant in the existing piping If gas refrigerant is used to seal the system, the composition contains a large amount of chlorine which may cause the...
  • Page 4 [1] Cautions for service ·After recovering the all refrigerant in the unit, proceed to working. ·Do not release refrigerant in the air. ·After completing the repair service, recharge the cycle with the specified amount of liquid refrigerant. [2] Refrigerant recharging (1) Refrigerant recharging process 1Direct charging from the cylinder.
  • Page 5 CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes. Do not use refrigerant other than R410A. In case of using the existing pipes for R22, be careful with If other refrigerant (R22 etc.) is used, chlorine in refrige- the followings.
  • Page 6 Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. Tool name Specifications ·Only for R410A ·Use the existing fitting specifications . (UNF1/2) Gauge manifold ·Use high-tension side pressure of 5.3MPa·G or over. ·Only for R410A Charge hose ·Use pressure performance of 5.09MPa·G or over.

  • Page 7: Part Names And Functions

    PART NAMES AND FUNCTIONS Indoor Unit Filter Air intake grille Air intake Auto vane Guide vane Air outlet...

  • Page 8: Wireless Remote Controller

    Wireless remote controller When cover is open. CHECK TEST RUN display CHECK&TEST RUN display indicates that the unit is being checked or test-run. MODEL SELECT display Blinks when model is selected. display Lights up while transmission to the indoor unit is mode using switches. display SET TEMP.

  • Page 9: Specifications

    SPECIFICATIONS Service Ref. PKA-RP35GAL, PKA-RP35GAL#1 Mode Cooling Heating Power supply(phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.07 0.07 0.33 0.33 Running current Starting current 0.40 0.40 External finish Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil Fan(drive) x No.
  • Page 10 Service Ref. PKH-P35GALH Mode Cooling Heating Power supply(phase, cycle,voltage) Single phase, 50Hz, 230V Input 0.07 0.07<0.73> 0.33 0.33<3.17> Running current Starting current 0.40 0.40<3.17> External finish Munsell 0.70Y8.59/0.97 Heat exchanger Plate fin coil Line flow (direct) x 1 Fan(drive) x No. Fan motor output 0.030 9-10-11-12(318-353-388-424)

  • Page 11: Noise Criterion Curves

    NOISE CRITERION CURVES SPL(dB) LINE NOTCH High PKA-RP35/50GAL Medium1 PKA-RP35/50GAL#1 Medium2 PKH-P35/50GALH NC-70 NC-60 NC-50 NC-40 NC-30 APPROXIMATE THRESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz UNIT WALL MICROPHONE 11 11...

  • Page 12: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit : mm INDOOR UNIT PKH-P35GALH PKA-RP35GAL PKA-RP35GAL#1 PKH-P50GALH PKA-RP50GAL PKA-RP50GAL#1...

  • Page 13: Wiring Diagram

    WIRING DIAGRAM PKH-P35GALH PKA-RP35GAL PKA-RP35GAL#1 PKH-P50GALH PKA-RP50GAL PKA-RP50GAL#1 CNDK CN2S (RED) (WHT) 1 (Fig.1) POWER DC13.1V SUPPLY ~(1PHASE) 230V 50Hz GRN/YLW OUTDOOR UNIT POWER POWER OUTDOOR VANE 1 3 5 CNDK UNIT CN6V ( WHT ) INDOOR/OUTDOOR (RED) (ORN) POWER...

  • Page 14: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PKH-P35GALH PKA-RP35GAL PKA-RP35GAL#1 PKH-P50GALH PKA-RP50GAL PKA-RP50GAL#1 Strainer Heat exchanger Refrigerant GAS pipe connection (Flare) Condenser/evaporator temperature thermistor (TH5) Refrigerant flow in cooling Refrigerant flow in heating Refrigerant LIQUID pipe connection (Flare) Pipe temperature thermistor/liquid Room temperature (TH2)

  • Page 15: Troubleshooting

    TROUBLESHOOTING 10-1. TROUBLESHOOTING <Error code display by self-diagnosis and actions to be taken for service (summary)> Present and past error codes are logged and displayed on the wired remote controller or controller board of outdoor unit. Actions to be taken for service and the trouble reoccurrence at field are summarized in the table below. Check the contents below before investigating details.
  • Page 16 10-2. MALFUNCTION-DIAGNOSIS METHOD BY REMOTE CONTROLLER <In case of trouble during operation> When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. < Malfunction-diagnosis method at maintenance service> [Procedure] 1.
  • Page 17 • Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds Beep Beep Beep Beep Beep Beep Beep OPERATION · · · Repeated INDICATOR lamp flash pattern Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.
  • Page 18 • On wireless remote controller The continuous buzzer sounds from receiving section of indoor unit. Blink of operation lamp • On wired remote controller Check code displayed in the LCD. • If the unit cannot be operated properly after test run, refer to the following table to find the cause. Symptom Cause Wired remote controller...

  • Page 19: Self-Diagnosis Action Table

    Note: Refer to the manual of outdoor unit for the details of display 10-3. SELF-DIAGNOSIS ACTION TABLE such as F, U, and other E. Abnormal point and detection method Countermeasure Error Code Cause 1 Defective thermistor 1–3 Check resistance value of thermistor. Room temperature thermistor (TH1) 1 The unit is in 3-minute resume 0: ..
  • Page 20 Abnormal point and detection method Countermeasure Error Code Cause Freezing/overheating protection is work- (Cooling or drying mode) (Cooling or drying mode) 1 Clogged filter (reduced airflow) 1 Check clogs of the filter. 1 Freezing protection (Cooling mode) 2 Short cycle of air path 2 Remove shields.
  • Page 21 Abnormal point and detection method Countermeasure Error Code Cause 1 Defective thermistor 1–3 Check resistance value of thermistor. Pipe temperature thermistor / For characteristics, refer to (P1) above. Condenser-Evaporator (TH5) characteristics 2 Check contact failure of connector (CN29) 1 The unit is in 3-minute resume protec- 2 Contact failure of connector on the indoor controller board.
  • Page 22 Abnornal point and detection method Countermeasure Error Code Cause 1 Contact failure, short circuit or, Indoor/outdoor unit communication * Check LED display on the outdoor control error (Signal receiving error) circuit board. (Connect A-control service miswiring (converse wiring) of 1 Abnormal if indoor controller board tool, PAC-SK52ST.) indoor/outdoor unit connecting cannot receive any signal normally for 6...

  • Page 23: Troubleshooting By Inferior Phenomena

    10-4. TROUBLESHOOTING BY INFERIOR PHENOMENA Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure (1)LED2 on indoor controller board • When LED1 on indoor controller board is also off. 1 Power supply of rated voltage is not supplied to out- 1 Check the voltage of outdoor power is off.
  • Page 24 Note: Refer to the manual of outdoor unit for the detail of remote controller. Phenomena Cause Countermeasure (2)LED2 on indoor controller board • When LED1 on indoor controller board is also blinking. Check indoor/outdoor unit connecting wire for connection failure. Connection failure of indoor/outdoor unit connecting is blinking.

  • Page 25: Emergency Operation

    10-5. EMERGENCY OPERATION 10-5-1. When wireless remote controller troubles or its battery is exhausted 1. Emergency operation is available in such a case using emergency operation switch equipped next to the receiver of indoor unit. 2. To start operation • Cooling Operation·······Press (Cooling) switch.
  • Page 26 10-6. HOW TO CHECK THE PARTS PKH-P35GALH PKA-RP35GAL PKA-RP35GAL#1 PKH-P50GALH PKA-RP50GAL PKA-RP50GAL#1 Parts name Check points Room temperature Disconnect the connector then measure the resistance with a tester. thermistor (TH1) (Surrounding temperature 10 ~30 ) Pipe temperature thermistor (TH2) Normal...
  • Page 27 10-7. TEST POINT DIAGRAM 10-7-1. Indoor controller board PKA-RP35GAL PKA-RP35GAL#1 PKH-P35GALH PKA-RP50GAL PKA-RP50GAL#1 PKH-P50GALH CN2D LED1 LED2 LED3 Connect to the indoor Power supply (R.B) Transmission (Indoor/ Power supply (I.B) CN3C power board (CN2S) outdoor) Transmission (Indoor/ (12.5~13.7V DC) outdoor)
  • Page 28 10-7-2. Indoor power board PKA-RP35GAL PKA-RP35GAL#1 PKH-P35GALH PKA-RP50GAL PKA-RP50GAL#1 PKH-P50GALH CN2S Connect to the indoor controller board (CN2D) Between 1 to 3 12.6-13.7V DC (Pin1 (+)) CNSK Connect to the indoor controller board (CNDK) Between 1 to 3 220-240V AC...
  • Page 29 : Open) Jumper wire Setting by the dip switch and jumper wire Remarks Functions For service board Model settings Models Service board PKA-RP35GAL Capacity PKH-P35GALH settings PKA-RP50GAL PKH-P50GALH <Initial setting> Wireless remote controller: 0 Control PCB setting Wireless remote Pair number...

  • Page 30: Special Function

    SPECIAL FUNCTION 11-1. ROTATION FUNCTION(AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION) For PKA-RP35GAL#1, PKA-RP50GAL#1 11-1-1. Operation (1) Rotation function (and Back-up function) • Outline of functions · Main and sub unit operate alternately according to the interval of rotation setting.
  • Page 31 11-1-2. How to set rotation function(Back-up function, 2nd stage cut-in function) You can set these functions by wired remote controller.(Maintenance monitor) NOTICE Both main and sub unit should be set in same setting. Every time replacing indoor controller board for servicing, the function should be set again. (1) Request Code List Rotation setting Setting No.
  • Page 32 (2) Setting method of each function by wired remote controller B: Refrigerant address C: Data display area D: Request code display area 1. Stop operation( ). 2. Press the button ( ) for 3 seconds so that [Maintenance mode] appears on the screen ( ). TEST After a while, [00] appears in the refrigerant address number display area.(at 3.

  • Page 33: Disassembly Procedure

    DISASSEMBLY PROCEDURE PKA-RP35GAL PKA-RP35GAL#1 PKH-P35GALH PKA-RP50GAL PKA-RP50GAL#1 PKH-P50GALH OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Figure 1) Hook 1. REMOVE THE LOWER SIDE OF THE INDOOR UNIT FROM THE INSTALLATION PLATE. (1) Remove the left / right corner box of the indoor unit.

  • Page 34: Operation Procedure

    OPERATION PROCEDURE PHOTOS & ILLUSTRATION 4. REMOVING THE POWER BOARD (Photo 4) (1) Remove the front panel.(see the photo 1) (2) Remove the electrical parts box(2screws).(see the photo 2) Power board (3) Disconnect the whole connector in the control board. (4) After lifting the controller case with pressing it’s convex section, remove the controller case and the control board simultaneously.(see the photo 3)
  • Page 35 OPERATION PROCEDURE PHOTOS & ILLUSTRATION 9. REMOVING THE FAN MOTOR. (Photo 9) (1) Remove the terminal block cover. Motor cover (2) Disconnect the connector <yellow> of the wireless remote controller board. (3) Remove the front panel.(see the photo 1) (4) Remove the electrical parts box.(see the photo 8) (5) Remove the nozzle assemble.(see the photo 7) (6) Remove the fan motor leg fixing 3screws.
  • Page 36 OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Photo 14) 13. REMOVING the SIGNAL RECEIVING P.C. BOARD Front (1) Remove the terminal block cover. panel (2) Disconnect the connector <yellow> for the wireless remote Set screws controller. (3) Remove the front panel.(see the photo 1) (4) Remove the 2screws and signal receiving p.c.

  • Page 37: Parts List

    PARTS LIST (non-RoHS compliant) STRUCTURAL PARTS PKH-P35GALH, PKA-RP35GAL PKH-P50GALH, PKA-RP50GAL Wiring PKH- PKA- Recom- Remarks Parts Name Parts No. Specifications Diagram mended P35 / P50 RP35 / RP50 (Drawing No.) Symbol Q'ty GALH R01 07Y 808 BACK PLATE R01 09Y 658...
  • Page 38 ELECTRICAL PARTS PKH-P35GALH, PKA-RP35GAL PKH-P50GALH, PKA-RP50GAL Wiring Recom- PKH- PKA- Remarks Specifications Parts No. Parts Name Diagram mended P35 / P50 RP35 / RP50 (Drawing No.) Symbol Q'ty GALH R01 E48 480 HEAT EXCHANGER T7W E56 480 HEAT EXCHANGER R01 09Y 114...
  • Page 39 From the preceding page. Part numbers that is circled is not shown in the figure. PKH- Wiring Recom- PKA- Remarks Specifications Parts No. Parts Name Diagram mended P35 / P50 RP35 / RP50 (Drawing No.) Symbol Q'ty GALH — TERMINAL COVER (BG02V195H10) T7W A14 716 TERMINAL BLOCK...

  • Page 40: Rohs Parts List

    RoHS PARTS LIST ELECTRICAL PARTS PKH-P35GALH, PKA-RP35GAL, PKA-RP35GAL#1 PKH-P50GALH, PKA-RP50GAL, PKA-RP50GAL#1 Wiring Recom- PKA- PKH- Remarks Specifications Parts No. Parts Name Diagram mended P35 / P50 RP35 / RP50 (Drawing No.) Symbol Q'ty GALH GAL(#1) R01 E70 480 HEAT EXCHANGER...
  • Page 41 From the preceding page. Part number that is circled is not shown in the figure. PKH- PKA- Wiring Recom- Remarks Parts No. Parts Name Specifi cations Diagram mended P35/P50 RP35/RP50 RP35/RP50 (Drawing No.) Symbol Q'ty GALH GAL#1 18 G — TERMINAL COVER (BG02V195H10) 19 G T7W E23 716 TERMINAL BLOCK...
  • Page 42 STRUCTURAL PARTS PKH-P35GALH, PKA-RP35GAL, PKA-RP35GAL#1 PKH-P50GALH, PKA-RP50GAL, PKA-RP50GAL#1 PKH- PKA- Wiring Recom- Remarks Parts No. Parts Name Specifi cations Diagram mended P35/P50 RP35/RP50 RP35/RP50 (Drawing No.) Symbol Q'ty GALH GAL#1 R01 08Y 808 BACK PLATE R01 10Y 658 CORNER COVER(R)
  • Page 44 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in May 2008 No.OC330 REVISED EDITION-B PDF 7 New publication, effective May 2008 Distributed in Jun. 2006 No.OC330 REVISED EDITION-A PDF 8 Specifications subject to change without notice.

This manual is also suitable for:

Mr.slim pka-rp50galPkh-p35galhPkh-p50galhMr.slim pka-rp35gal1Mr.slim pka-rp50gal1

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