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Mitsubishi Electric PSA-RP71GA Service Manual
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Mitsubishi Electric PSA-RP71GA Service Manual

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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]
PSA-RP71GA
PSA-RP100GA
PSA-RP125GA
PSA-RP140GA
PSH-P71GAH
PSH-P100GAH
PSH-P125GAH
PSH-P140GAH
[Service Ref.]
PSA-RP71GA
PSA-RP71GA#1
PSA-RP100GA
PSA-RP100GA#1
PSA-RP125GA
PSA-RP125GA#1
PSA-RP140GA
PSA-RP140GA#1
PSH-P71GAH
PSH-P100GAH
PSH-P125GAH
PSH-P140GAH
REVISED EDITION-B
Revision:
• PSA-RP71~140GA#1 are added
in REVISED EDITION-B.
• Some descriptions have been
modified.
• Please void OC332
REVISED EDITION-A.
Note:
• This manual describes only
service data of the indoor
units.
• RoHS compliant products have
<G> mark on the spec name
plate.
• For servicing of RoHS compliant
products, refer to the RoHS Parts
List.
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 ........................ 12
7. OUTLINES AND DIMENSIONS ..................... 14
8. WIRING DIAGRAM ................................................. 16
9. REFRIGERANT SYSTEM DIAGRAM .................... 17
10. TROUBLESHOOTING .................................... 18
11. SPECIAL FUNCTION ..................................... 29
12. DISASSEMBLY PROCEDURE ...................... 32
13. PARTS LIST ................................................... 35
14. RoHS PARTS LIST ......................................... 39
May 2008
No. OC332

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  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS May 2008 No. OC332 REVISED EDITION-B SERVICE MANUAL Indoor unit [Model names] [Service Ref.] PSA-RP71GA Revision: PSA-RP71GA • PSA-RP71~140GA#1 are added PSA-RP71GA#1 in REVISED EDITION-B. PSA-RP100GA • Some descriptions have been PSA-RP100GA modified.

  • Page 2: Technical Changes

    TECHNICAL CHANGES PSA-RP71GA PSA-RP71GA#1 PSA-RP100GA PSA-RP100GA#1 PSA-RP125GA PSA-RP125GA#1 PSA-RP140GA PSA-RP140GA#1 INDOOR CONTROLLER BOARD(I.B.) has been changed. REFERENCE MANUAL 2-1. OUTDOOR UNIT’S SERVICE MANUAL Service Ref. Service Manual No. PUHZ-RP71/100/125/140VHA 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 •...

  • 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 utilising refrigerant R407C Do not use the existing refrigerant piping. Use liquid refrigerant to charge 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 utilising 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 Gauge manifold ·Only for R410A ·Use the existing fitting specifications . (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. Charge hose ·Only for R410A ·Use pressure performance of 5.09MPa·G or over.

  • Page 7: Part Names And Functions

    PART NAMES AND FUNCTIONS • Indoor Unit Disperses air up and down Disperses air left and right. Removes dust and pollutants from intake air. (Intakes air from room.) • Controller Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. •...
  • Page 8 • Display “Sensor” indication Displayed when the remote controller sensor is used. Day-of-Week For purposes of this explanation, Shows the current day of the week. all parts of the display are shown as lit. During actual operation, only Time/Timer Display the relevant items will be lit.

  • Page 9: Specifications

    SPECIFICATIONS Service Ref. PSA-RP71GA, PSA-RP71GA#1 Mode Cooling Heating Power supply(phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.15 0.15 Running current 0.66 0.66 Starting current 0.80 0.80 External finish Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil Fan(drive) Centrifugal (direct) Fan motor output 0.03...
  • Page 10 PSA-RP140GA, PSA-RP140GA#1 Service Ref. Mode Cooling Heating Power supply(phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.36 0.36 Running current 1.59 1.59 Starting current 2.10 2.10 External finish Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil Fan(drive) x No. Centrifugal (direct) Fan motor output 0.11 /min(CFM)
  • Page 11 Service Ref. PSH-P125GAH Mode Cooling Heating Power supply(phase, cycle, voltage) Single phase, 50Hz, 230V Input 0.28 0.28<2.76> Running current 1.23 1.23<12.00> 1.50 Starting current 1.50<12.00> External finish Munsell 0.70Y 8.59/0.97 Heat exchanger Plate fin coil Fan(drive) x No. Centrifugal (direct) Fan motor output 0.11 Airflow(Low-High)

  • Page 12: Noise Criterion Curves

    NOISE CRITERION CURVES PSA-RP71GA PSA-RP100GA SPL(dB) LINE NOTCH NOTCH SPL(dB) LINE High High PSA-RP71GA#1 PSA-RP100GA#1 PSH-P71GAH PSH-P100GAH NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF REARING FOR REARING FOR NC-20 NC-20 CONTINUOUS...
  • Page 13 PSA-RP140GA NOTCH SPL(dB) LINE High PSA-RP140GA#1 PSH-P140GAH NC-70 NC-60 NC-50 NC-40 NC-30 APPROXIMATE THRESHOLD OF REARING FOR NC-20 CONTINUOUS NOISE 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz unit MICROPHONE floor...

  • Page 14: Outlines And Dimensions

    OUTLINES AND DIMENTIONS PSA-RP71GA Unit : mm PSA-RP71GA#1 PSH-P71GAH...
  • Page 15 PSA-RP100GA Unit : mm PSA-RP100GA#1 PSH-P100GAH PSA-RP125GA PSA-RP125GA#1 PSH-P125GAH PSA-RP140GA PSA-RP140GA#1 PSH-P140GAH...

  • Page 16: Wiring Diagram

    WIRING DIAGRAM PSA-RP71GA PSA-RP100GA PSA-RP125GA PSA-RP140GA PSA-RP71GA#1 PSA-RP100GA#1 PSA-RP125GA#1 PSA-RP140GA#1 PSH-P71GAH PSH-P100GAH PSH-P125GAH PSH-P140GAH SYMBOL NAME SYMBOL NAME SYMBOL NAME CAPACITOR (FAN MOTOR) INDOOR POWER BOARD SWITCH (MODEL SELECTION) See Table 1. FAN MOTOR INDOOR CONTROLLER BOARD SWITCH (CAPACITY CODE) See Table 2.

  • Page 17: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PSA-RP71GA PSA-RP100GA PSA-RP125GA PSA-RP140GA PSA-RP71GA#1 PSA-RP100GA#1 PSA-RP125GA#1 PSA-RP140GA#1 PSH-P71GAH PSH-P100GAH PSH-P125GAH PSH-P140GAH 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)

  • Page 18: 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 19 Note: Refer to the manual of outdoor unit for the details of display 10-2. 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 (CN44) 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 10-3. 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 Check the voltage of outdoor power 1 Power supply of rated voltage is not supplied to out- 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 Connection failure of indoor/outdoor unit connecting for connection failure.
  • Page 25 10-5. HOW TO CHECK THE PARTS PSA-RP71GA PSA-RP100GA PSA-RP125GA PSA-RP140GA PSA-RP71GA#1 PSA-RP100GA#1 PSA-RP125GA#1 PSA-RP140GA#1 PSH-P71GAH PSH-P100GAH PSH-P125GAH PSH-P140GAH Parts name Check points Disconnect the connector then measure the resistance using a tester. Room temperature thermistor (TH1) (Surrounding temperature 10 ~30 )
  • Page 26 10-6. TEST POINT DIAGRAM 10-6-1. Power board PSA-RP71GA PSA-RP100GA PSA-RP125GA PSA-RP140GA PSA-RP71GA#1 PSA-RP100GA#1 PSA-RP125GA#1 PSA-RP140GA#1 PSH-P71GAH PSH-P100GAH PSH-P125GAH PSH-P140GAH 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...
  • Page 27 10-6-2. Indoor controller board PSA-RP71GA PSA-RP100GA PSA-RP125GA PSA-RP140GA PSA-RP71GA#1 PSA-RP100GA#1 PSA-RP125GA#1 PSA-RP140GA#1 PSH-P71GAH PSH-P100GAH PSH-P125GAH PSH-P140GAH CN2D LED1 Connector to the indoor LED2 LED3 Power supply Power supply power board (CN2S) Transmission (I.B) (12.5~13.7V DC) (R.B) (Indoor/outdoor) CN3C – Transmission...
  • Page 28 Setting by the dip switch and jumper wire Remarks Functions For service board Model settings Service board MODELS Capacity 1 2 3 4 5 PSA-RP71GA settings PSH-P71GAH 1 2 3 4 5 PSA-RP100GA PSH-P100GAH 1 2 3 4 5 PSA-RP125GA PSH-P125GAH 1 2 3 4 5...

  • Page 29: Special Function

    SPECIAL FUNCTION 11-1. ROTATION FUNCTION(AND BACK-UP FUNCTION, 2ND STAGE CUT-IN FUNCTION) For PSA-RP71/100/125/140GA#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. w Main and sub unit should be set by refrigerant address.(Outdoor Dip switch setting) Refrigerant address"00"...
  • Page 30 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 31 (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 32: Disassembly Procedure

    DISASSEMBLY PROCEDURE PSH-P71GAH PSH-P100GAH PSH-P125GAH PSH-P140GAH PSA-RP71GA PSA-RP100GA PSA-RP125GA PSA-RP140GA PSA-RP71GA#1 PSA-RP100GA#1 PSA-RP125GA#1 PSA-RP140GA#1 OPERATING PROCEDURE PHOTOS Photo 1 1. Removing the intake grille (1) Remove the screw at the centre of the knob of the intake grille. (2) Pull the knob of the intake grille toward you.
  • Page 33 OPERATING PROCEDURE PHOTOS Swing louver Photo 5 5. Removing the front panel (1) Remove the intake grille. (2) Remove the 2 screws at the lower part of the front panel. Controller (3) Pull the front panel down to remove. (4) Disconnect the blue connector of the controller. Front panel Screws Top panel...
  • Page 34 OPERATING PROCEDURE PHOTOS 8. Removing the booster heater Photo 10 Swing louver (1) Remove the intake grille. (2) Remove the front panel. (3) Remove the insulation panel. Booster heater (4) Remove the green connector of the heater. Screws Photo 11 Screws 9.

  • Page 35: Parts List

    PARTS LIST (non-RoHS compliant) FUNCTIONAL PARTS PSH-P71GAH PSH-P100GAH PSA-RP71GA PSA-RP100GA Part numbers that are circled are not shown in the figure. PSH-P PSA-RP Wiring Recom- Remarks Part Name Part No. Specification 71 100 71 100 Diagram mended (Drawing No.) Symbol Q’ty...
  • Page 36 FUNCTIONAL PARTS PSH-P125GAH PSH-P140GAH PSA-RP125GA PSA-RP140GA...
  • Page 37 Part numbers that are circled are not shown in the figure. PSH-P PSA-RP Wiring Recom- Remarks Part No. Part Name Specification Diagram mended (Drawing No.) Symbol Q’ty R01 A28 529 DRAIN PAN FUSE R01 E02 239 FUSE 250V 6.3A R01 736 255 FAN MOTOR CAPACITOR 440V T7W E23 716...
  • Page 38 16 15 STRUCTURAL PARTS PSH-P71GAH PSH-P100GAH PSH-P125GAH PSH-P140GAH PSA-RP71GA PSA-RP100GA PSA-RP125GA PSA-RP140GA Part numbers that are circled are not shown in the figure. PSH-P PSA-RP Wiring Recom- Remarks Part Name Part No. Diagram mended Specification 125,140 125,140 (Drawing No.) Symbol...

  • Page 39: Rohs Parts List

    RoHS PARTS LIST FUNCTIONAL PARTS PSH-P71GAH PSA-RP71GA PSA-RP71GA#1 PSH-P100GAH PSA-RP100GA PSA-RP100GA#1 Part numbers that are circled are not shown in the figure. PSH-P PSA-RP Wiring Recom- Remarks Part No. Part Name Specifi cations Diagram mended (Drawing No.) Symbol Q'ty GA#1...
  • Page 40 FUNCTIONAL PARTS PSH-P125GAH PSA-RP125GA PSA-RP125GA#1 PSH-P140GAH PSA-RP140GA PSA-RP140GA#1...
  • Page 41 Part numbers that are circled are not shown in the figure. PSH-P PSA-RP Wiring Recom- Remarks Part No. Part Name Specifi cations 125 140 125 140 125 140 Diagram mended (Drawing No.) Symbol Q'ty GA#1 R01 A30 529 DRAIN PAN R01 E06 239 FUSE 250V 6.3A...
  • Page 42 16 15 STRUCTURAL PARTS PSH-P71GAH PSA-RP71GA PSA-RP71GA#1 PSH-P100GAH PSA-RP100GA PSA-RP100GA#1 PSH-P125GAH PSA-RP125GA PSA-RP125GA#1 PSH-P140GAH PSA-RP140GA PSA-RP140GA#1 Part numbers that are circled are not shown in the figure. PSH-P PSA-RP Wiring Recom- Remarks Part Name Part No. Specification Diagram mended 125,140...
  • 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.OC332 REVISED EDITION-B PDF 7 New publication, effective May 2008. Distributed in Jul. 2006 No.OC332 REVISED EDITION-A PDF 8 Specifications subject to change without notice.

This manual is also suitable for:

Psa-rp140gaPsa-rp125gaPsh-p71gahPsh-p100gahPsa-rp100gaPsh-p125gah

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