Service manual

ManualsBrandsMitsubishi ManualsAir ConditionerPEAD-RP100

SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

CONTENTS

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

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

3. FEATURES ·····················································7

4. SPECIFICATIONS···········································8

5. DATA ·····························································10

6. OUTLINES AND DIMENSIONS····················15

7. WIRING DIAGRAM·······································18

8. WIRING SPECIFICATIONS ··························21

REFRIGERANT SYSTEM DIAGRAM

··············26

10. TROUBLESHOOTING ··································29

11. FUNCTION SETTING····································86

12.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

············92

13. EASY MAINTENANCE FUNCTION············102

14. DISASSEMBLY PROCEDURE ···················107

15. PARTS LIST ················································129

16. RoHS PARTS LIST ·····································140

No.OC374

REVISED EDITION-A

R410A

July 2006

Outdoor unit

[model names]

PUHZ-RP35VHA2

PUHZ-RP50VHA2

PUHZ-RP60VHA2

PUHZ-RP71VHA2

PUHZ-RP100VHA2

PUHZ-RP125VHA2

PUHZ-RP140VHA2

PUHZ-RP100YHA2

PUHZ-RP125YHA2

PUHZ-RP140YHA2

[Service Ref.]

PUHZ-RP35VHA2

PUHZ-RP50VHA2

PUHZ-RP60VHA2

PUHZ-RP71VHA2

PUHZ-RP100VHA2

PUHZ-RP125VHA2

PUHZ-RP140VHA2

PUHZ-RP100YHA2

PUHZ-RP125YHA2

PUHZ-RP140YHA2

PUHZ-RP60VHA2

PUHZ-RP71VHA2

NOTE:

• This manual describes only

service data of the outdoor

units.

• RoHS compliant products have

<G> mark on the spec name

plate.

• For servicing of RoHS compli-

ant products, refer to the RoHS

PARTS LIST.

Revision:

• RoHS PARTS LIST is added.

• Some descriptions have been

modified.

• Please void OC374.

OC374A--1.qxp 06.7.26 5:07 PM Page 1

Summary of content (150 pages)

PAGE 1
OC374A--1.qxp 06.7.26 5:07 PM Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS July 2006 No.OC374 REVISED EDITION-A SERVICE MANUAL R410A Outdoor unit [model names] PUHZ-RP35VHA2 PUHZ-RP50VHA2 PUHZ-RP60VHA2 PUHZ-RP71VHA2 PUHZ-RP100VHA2 PUHZ-RP125VHA2 PUHZ-RP140VHA2 PUHZ-RP100YHA2 PUHZ-RP125YHA2 PUHZ-RP140YHA2 Revision: [Service Ref.
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OC374A--1.qxp 1 06.7.26 5:07 PM Page 2 REFERENCE MANUAL 1-1. INDOOR UNIT SERVICE MANUAL Model name Service Ref. Service Manual No. PLA-RP35/50/60/71AA.UK OC335 PLA-RP35/50/60/71AA OC327 PLA-RP35/50/60/71AA PLA-RP100/125/140AA2 PLA-RP100/125/140AA2.
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OC374A--1.qxp 06.7.26 5:07 PM 2 Page 3 SAFETY PRECAUTION 2-1. 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 the followings. · For RP100, 125 and 140, be sure to perform replacement operation before test run. · Change flare nut to the one provided with this product. Use a newly flared pipe. · Avoid using thin pipes.
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OC374A--1.qxp 06.7.26 5:07 PM Page 4 Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. No. 1 Specifications Gauge manifold ·Only for R410A ·Use the existing fitting specifications. (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. 2 Charge hose 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.
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OC374A--1.qxp 06.7.26 5:07 PM Page 5 2-2. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES (1) Flowchart Measure the existing pipe thickness and check for damage. The existing pipe thickness meets specifications and the pipes are not damaged. The existing pipe thickness does not meet specifications or the pipes are damaged. Check if existing air conditioner can operate. Existing air conditioner can operate. Existing air conditioner cannot operate.
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OC374A--1.qxp 06.7.26 5:07 PM Page 6 (2) Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.
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OC374A--1.qxp 06.7.26 5:07 PM 3 Page 7 FEATURES PUHZ-RP35/ 50VHA2 PUHZ-RP60/ 71VHA2 PUHZ-RP100/ 125/ 140VHA2 PUHZ-RP100/ 125/ 140YHA2 CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. Max.30m(PUHZ-RP35/50/60/71/100/125/140) The refrigerant circuit with LEV(Linear Expansion Valve) and power receiver always control the optimal refrigerant level regardless of the length (30m max. and 5m min.) of piping.
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OC374A--1.qxp 4 06.7.26 5:07 PM Page 8 SPECIFICATIONS PUHZ-RP35VHA2 Service Ref. OUTDOOR UNIT Mode Power supply (phase, cycle, voltage) Running current Max. current External finish Refrigerant control Compressor Model Motor output Starter type Protection devices Crankcase heater Heat exchanger Fan Fan(drive) o No. Fan motor output Airflow Defrost method Noise level REFRIGERANT PIPING Dimensions Weight Refrigerant Charge Oil (Model) Pipe size O.D.
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OC374A--1.qxp 06.7.26 5:07 PM Page 9 PUHZ-RP100VHA2 Service Ref. OUTDOOR UNIT Mode Power supply (phase, cycle, voltage) Running current Max. current External finish Refrigerant control Compressor Model Motor output Starter type Protection devices Crankcase heater Heat exchanger Fan Fan(drive) o No. Fan motor output Airflow Defrost method Noise level Dimensions REFRIGERANT PIPING Between the indoor & outdoor unit Cooling Heating W D H ANV33FDDMT 1.
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OC374A--1.qxp 5 06.7.26 5:07 PM Page 10 DATA 5-1. REFILLING REFRIGERANT CHARGE (R410A : kg) 10m 20m Piping length (one way) 30m 40m 50m 60m 75m Factory charged PUHZ-RP35VHA2 2.1 2.3 2.5 2.7 2.9 — — 2.5 PUHZ-RP50VHA2 2.1 2.3 2.5 2.7 2.9 — — 2.5 PUHZ-RP60VHA2 3.1 3.3 3.5 4.1 4.7 — — 3.5 PUHZ-RP71VHA2 3.1 3.3 3.5 4.1 4.7 — — 3.5 PUHZ-RP100VHA2 4.6 4.8 5.0 5.6 6.2 6.8 7.4 5.0 PUHZ-RP125VHA2 PUHZ-RP125YHA2 4.6 4.8 5.0 5.6 6.2 6.8 7.4 5.
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OC374A--1.qxp 06.7.26 5:07 PM Page 11 5-3. NOISE CRITERION CURVES MICROPHONE 1m UNIT 1.5m GROUND 90 80 70 NC-70 60 NC-60 50 NC-50 40 NC-40 30 NC-30 20 10 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE 63 NC-20 125 250 500 1000 2000 4000 BAND CENTER FREQUENCIES, Hz PUHZ-RP100VHA2 PUHZ-RP100YHA2 OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.
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OC374A--1.qxp 06.7.26 5:07 PM Page 12 5-4. STANDARD OPERATION DATA PLA-RP35AA Representative matching Electrical circuit Total Mode Refrigerant circuit PLA-RP60AA PLA-RP71AA Cooling Heating Cooling Heating Cooling Heating Cooling Heating Capacity W 3,600 4,100 5,000 6,000 6,000 7,000 7,100 8,000 Input kW 1.07 1.12 1.55 1.62 1.65 1.85 1.97 2.
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OC374A--1.qxp 06.7.26 5:07 PM Page 13 PLA-RP100AA2 Representative matching Electrical circuit Total Mode Refrigerant circuit PLA-RP140AA2 Cooling Heating Cooling Heating Cooling Heating Capacity W 10,000 11,200 12,500 14,000 14,000 16,000 Input kW 3.02 3.02 3.87 3.88 4.65 4.69 Indoor unit PLA-RP100AA2 PLA-RP125AA2 PLA-RP140AA2 Phase , Hz 1 , 50 1 , 50 1 , 50 Volts V 230 230 230 Amperes A 0.92 0.92 0.
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OC374A--1.qxp 06.7.26 5:07 PM Page 14 PLA-RP100AA2 Representative matching Electrical circuit Total Mode Refrigerant circuit PLA-RP140AA2 Cooling Heating Cooling Heating Cooling Heating Capacity W 10,000 11,200 12,500 14,000 14,000 16,000 Input kW 3.02 3.02 3.87 3.88 4.65 4.69 Indoor unit PLA-RP100AA2 PLA-RP125AA2 PLA-RP140AA2 Phase , Hz 1 , 50 1 , 50 1 , 50 Volts V 230 230 230 Amperes A 0.92 0.92 0.
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OC374A--1.qxp 06.7.26 5:07 PM 6 Page 15 OUTLINES AND DIMENSIONS Unit : mm PUHZ-RP35VHA2 PUHZ-RP50VHA2 400 [33 drain hole 347.5 365 300 Air intake [33 drain hole 330 155 152 43.6 Air intake 45.4 40 18 23 32.5 4-10 o 21 oval hole (M10 foundation bolt) Service panel Service panel for charge plug Air discharge Handle for moving 150 Connection for gas pipe 90 10 155 300 43 35 600 Connection for liquid pipe 183 69 287.5 Service port Installation bolt pitch: 500 800 1.
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er Ov 0m 50 m F R E E er Ov 10 mm er Ov 10 0m m 06.7.26 5:07 PM 1 • • Refrigerant GAS pipe connection (FLARE)[15.88 (5/8F) 2 • • Refrigerant LIQUID pipe connection (FLARE)[ 9.52 (3/8F) w1• • Indication of STOP VALVE connection location. er Ov mm 10 OC374A--1.
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mm 50 r1 Ove FREE Ove r1 0m m mm 50 r1 Ove 10 Service space Over Front piping hole (Knock-Out) 92 [92 Front trunking hole 40 (Knock-Out) 65 45 Power supply wiring hole (2-[27Knock-Out) 19 92 75 Right piping hole (Knock-Out) Piping Knock-Out Hole Details 55 [92 Air intake Handle for moving 500 Over 150 Dimensions of space needed for service access are shown in the below diagram. 1 • • • Refrigerant GAS pipe connction (FLARE)[15.
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OC374A--1.qxp 06.7.26 5:07 PM 7 Page 18 WIRING DIAGRAM PUHZ-RP35VHA2 PUHZ-RP50VHA2 PUHZ-RP60VHA2 PUHZ-RP71VHA2 Symbols used in wiring diagram above are, SYMBOL TB1 MC MF1 21S4 63H SV TH3, TH33 TH4 TH6 TH7 TH8 LEV(A),LEV(B) ACL P.B.
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OC374A--1.qxp 06.7.26 5:07 PM Page 20 PUHZ-RP100YHA2 PUHZ-RP125YHA2 PUHZ-RP140YHA2 SYMBOL TB1 TB2 MC MF1,MF2 21S4 SV 63H TH3 TH4 TH6 TH7 TH33 LEV ACL1~ACL4 CB1,CB2 CK RS P.B.
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OC374A--1.qxp 06.7.26 5:07 PM 8 Page 21 WIRING SPECIFICATIONS 8-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model Outdoor unit power supply RP35, 50V ~/N (single), 50 Hz, 230 V *1 Circuit rating Wiring Wire No.
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OC374A--1.qxp 06.7.26 5:07 PM Page 22 8-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES The following connection patterns are available. The outdoor unit power supply patterns vary on models.
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OC374A--1.qxp 06.7.26 5:07 PM Page 23 8-3. INDOOR – OUTDOOR CONNECTING CABLE The cable shall not be lighter than design 245 IEC or 227 IEC. Wire No. o Size (E) Outdoor power supply Indoor unit-Outdoor unit Indoor unit-Outdoor unit earth Max. 45m Max. 50m Max. 80m 3 o 1.5 (polar) 3 o 2.5 (polar) 3 o 2.5 (polar) and S3 separated 1 o Min. 1.5 1 o Min. 2.5 1 o Min. 2.5 w The Max. cable length may vary depending on the condition of installation, humidity or materials, etc.
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OC374A--1.qxp 06.7.26 5:07 PM Page 24 8-4. M-NET WIRING METHOD (Points to notice) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same conduit tube. (2) Terminal block (TB7) for transmission wires should never be connected to 220~240V power supply. If it is connected, electronic parts on M-NET p.c.
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OC374A--1.qxp 06.7.26 5:07 PM Page 25 ● M-NET wiring 2 M-NET (1) Use 2-core x 1.25mm shield wire for electric wires. terminal Ground (Excluding the case connecting to system controller.) block wire (2) Connect the wire to the M-NET terminal block.Connect one core of the transmission wire (non-polar) to A terminal and the other to B. Peel the A B S shield wire, twist the shield part to a string and connect it to S terminal.
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OC374A--1.qxp 06.7.26 5:07 PM Page 28 1. Refrigerant collecting (pump down) Perform the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit. 1Turn on the power supply (circuit breaker). wWhen power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If “CENTRALLY CONTROLLED” is displayed, the refrigerant collecting (pump down) cannot be completed normally.
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OC374A--1.qxp 06.7.26 5:07 PM 10 Page 29 TROUBLESHOOTING 10-1. TROUBLESHOOTING Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the inferior phenomenon is reoccurring at service, are summarized in the table below. Check the contents below before investigating details.
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OC374A--1.qxp 06.7.26 5:07 PM Page 30 "TEST RUN" and the currently selected operation mode are displayed altemately. Displays the remaining test run time. Operating procedures 1. Turn on the main power supply. While the room temperature display on the remote controller is “PLEASE WAIT”, the remote controller is disabled. Wait until “PLEASE WAIT” disappears before using remote controller. “PLEASE WAIT” appears for about 2 minutes after power supply is turned on. w1 2. Press A TEST button twice.
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OC374A--2.qxp 06.7.26 5:54 PM Page 31 Test run [for wireless remote controller] TEST RUN TEMP ON/OFF 7 FAN AUTO STOP VANE AUTO START 5 MODE 3,4 6 CHECK LOUVER min TEST RUN 2 SET h RESET Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1.0M". 1 Turn on the main power to the unit. TEST RUN 2 Press the button twice continuously.
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OC374A--2.qxp 06.7.26 5:54 PM Page 32 10-3. HOW TO PRECEED "SELF-DIAGNOSIS" 10-3-1. When a Problem Occurs During Operation If a problem occurs in the air conditioner, the indoor and outdoor units will stop, and the problem is shown in the remote controller display. [CHECK] and the refrigerant address are displayed on the temperature display, and the error code and unit number are displayed alternately as shown below. I F 1 (If the outdoor unit is malfunctioning, the unit number will be "00".
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OC374A--2.qxp 06.7.26 5:54 PM D Press the Page 33 ON/OFF button twice within three seconds. The self-diagnosis address or refrigerant address will flash. When the error history is reset, the display will look like the one shown below. However, if you fail to reset the error history, the error content will be displayed again. 5 Cancel self-diagnosis. Self-diagnosis can be cancelled by the following two methods. H Press the CHECK 5 Press the button twice within three seconds.
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OC374A--2.qxp 06.7.26 5:54 PM Page 34 10-3-4. Malfunction-diagnosis method by wireless remote controller When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. [Procedure] 1. Press the CHECK button twice. • "CHECK" lights, and refrigerant address "00" flashes.
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OC374A--2.qxp 06.7.26 5:54 PM Page 35 • Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds OPERATION INDICATOR lamp flash pattern Beep Beep Beep Beep Off Beep 1st 2 nd 3 rd nth On On On On Beep Beep 1st Off On 2 nd · · · Repeated On 0.5 sec. Approx. 2.5 sec. 0.5 sec. 0.5 sec. Self-check Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.
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OC374A--2.qxp 06.7.26 5:54 PM Page 36 10-4. SELF-DIAGNOSIS ACTION TABLE Error Code Meaning of error code and detection method None — (Note 1) Refer to indoor unit section for code P and code E. Case Judgment and action 1 No voltage is supplied to terminal 1 Check following items. a) Power supply breaker block(TB1) of outdoor unit. b) Connection of power supply terminal block. a) Power supply breaker is put (TB1) off.
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OC374A--2.qxp 06.7.26 5:54 PM Page 37 Case Judgment and action 1 Contact failure or mis-wiring of indoor/outdoor unit connecting wire 2 Diameter or length of indoor/outdoor unit connecting wire is out of specified capacity. 3 4 or more indoor units are connected to one outdoor unit.
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OC374A--2.qxp 06.7.26 5:54 PM Page 38 Error Code Meaning of error code and detection method Abnormal high pressure (High-pressure switch 63H worked) Abnormal if high-pressure switch 63H worked ( w ) during compressor operation. w 4.15 MPa 63H: High-pressure switch U1 (1302) Abnormal high discharging temperature (1) Abnormal if discharge temperature thermistor (TH4) exceeds 125: or 110: continuously for 5 minutes.
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OC374A--2.qxp 06.7.26 5:54 PM Page 39 Case Error Code Meaning of error code and detection method Open/short circuit of discharge 1 Disconnection or contact temperature thermistor (TH4) failure of connector (TH4) on the outdoor controller circuit Abnormal if open (3: or less) or short board. (217: or more) is detected during U3 compressor operation.
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OC374A--2.qxp 06.7.26 5:54 PM Page 40 Error Code Meaning of error code and detection method U7 (1520) Abnormality of super heat due to low discharge temperature Abnormal if discharge super heat is continuously detected less than or equal to -15: for 3 minutes even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes. Case 1 Disconnection or loose connection of discharge temperature thermistor.
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OC374A--2.qxp 06.7.26 5:54 PM Page 41 Error Code Meaning of error code and detection method Case UH (5300) Current sensor error 1 Disconnection of compressor Abnormal if current sensor detects –1.5A to wiring 1.5A during compressor operation. (This 2 Defective circuit of current error is ignored in case of test run mode.
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OC374A--2.qxp 06.7.26 5:54 PM Page 42 Error Code Meaning of error code and detection method Abnormality of remote controller control board 1 Abnormal if data cannot be normally E1 read from the nonvolatile memory of the or remote controller control board. (Error code: E1) E2 2 Abnormal if the clock function of remote controller cannot be normally operated.
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OC374A--2.qxp 06.7.26 5:54 PM Page 43 Error Code Meaning of error code and detection method P8 Abnormality of pipe temperature 1 Slight temperature difference between indoor room Detected as abnormal when the pipe temtemperature and pipe utes later of compressor start and 6 mintemperature thermistor utes later of the liquid or condenser/evapo• Shortage of refrigerant rator pipe is out of cooling range.
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OC374A--2.qxp 06.7.26 5:54 PM Page 44 Error Code Meaning of error code and detection method A6 (6606) Case Judgment and action Communication error with communication processor Defective communication between unit processor and transmission processor Note) The address and attribute display at remote controller indicate the controller that detected abnormality. 1 Data of transmission processor or unit processor is not transmitted normally because of accidental trouble such as noise or thunder surge.
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OC374A--2.qxp 06.7.26 5:54 PM Page 45 From the previous page. Error Code Meaning of error code and detection method Case Judgment and action 4. If displayed address or attribute is remote controller, Indoor unit detects abnormality when indoor unit transmitted to remote controller and there was no reply (ACK).
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OC374A--2.qxp 06.7.26 5:54 PM Page 46 Error Code Meaning of error code and detection method M-NET•NO RESPONSE Abnormal if a massage was transmitted and there were reply (ACK) that massage was received, but response command does not return. Transmitting side detects abnormality every 30 seconds, six times continuously. Note) The address and attribute displayed at remote controller is indicate the controller that did not reply (ACK).
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OC374A--2.qxp 06.7.26 5:54 PM Page 47 Phenomena 4. Even controlling by the wireless remote controller no beep is heard and the unit does not start operating. Operation display is indicated on wireless remote controller. Factor 1The pair number settings of the wireless remote controller and indoor controller board are mismatched. Countermeasure 1Check the pair number settings. 5. When operating by the wireless remote controller, beep sound is heard, however, unit does not start operating.
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OC374A--2.qxp 06.7.26 5:54 PM Page 48 Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller. Diagnosis flow Cause Inspection method and troubleshooting Check the display time of “PLEASE WAIT” after turning on the main power. 6 minutes or more How long is “PLEASE WAIT” kept being displayed on the remote controller? 2 minutes or less 2 to 6 minutes Are any error codes displayed on the remote controller? Check the LED display of the outdoor controller circuit board.
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OC374A--2.qxp 06.7.26 5:54 PM Page 49 Symptoms: Nothing is displayed on the remote controller 1 Diagnosis flow Cause LED display of the indoor controller board LED1 : LED2 : LED3 : Inspection method and troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit. AC 198V to AC 264V? YES NO Check the voltage among L(L3) and N on the terminal block (TB1) of the outdoor power circuit board.
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OC374A--2.qxp 06.7.26 5:54 PM Page 50 Symptoms: Nothing is displayed on the remote controller 2 Diagnosis flow Cause LED display of the indoor controller board LED1 : LED2 : LED3 : or Inspection method and troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit. NO AC 198V to AC 264V? YES Not lighting. Check the status of the indoor controller board LED3 display.
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OC374A--2.qxp 06.7.26 5:54 PM Page 51 Symptoms: Nothing is displayed on the remote controller 3 Diagnosis flow Cause LED display of the indoor controller board LED1 : LED2 : or LED3 : — Inspection method and troubleshooting Check the voltage of the terminal block (TB6) of the remote controller. DC 10V to DC 16V? YES • Defective remote controller. • Replace the remote controller. NO Check the status of the LED2.
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OC374A--2.qxp 06.7.26 5:54 PM Page 52 • Before repair Frequent calling from customers. Phone Calls From Customers How to Respond Unit does 1 The operating display of remote 1 Check if power is supplied to air conditioner. Nothing appears on the display unless power is not operate controller does not come on. supplied. at all. 2 Unit cannot be restarted for a while after it’s stopped. 2 Wait around 3 minutes. to restart unit.
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OC374A--2.qxp 06.7.26 5:54 PM Page 53 Phone Calls From Customers How to Respond The room cannot be cooled or heated sufficiently. 1 Check the set temperature of remote controller. The outdoor unit cannot be operated if the set temperature is not appropriate. The outdoor unit operates in the following modes. COOL: When the set temperature is lower than the room temperature. HEAT: When the set temperature is higher than the room temperature. Note 2 Check if filters are not dirty and clogged.
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OC374A--2.qxp 06.7.26 5:54 PM Page 54 Phone Calls From Customers Something 3 Air blows out for a while after is wrong HEAT operation is stopped. with the blower….. How to Respond Note However, this control is also 3 This is not a malfunction. The blower is operating just for cooling down the applied to the models which heated-up air conditioner. This will be done within has no electric heater. one minute. This control is conducted only when the HEAT operation is stopped with the electric heater ON.
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OC374A--2.qxp 06.7.26 5:54 PM Page 55 Phone Calls From Customers A white mist is expelled from the indoor unit. Water or moisture is expelled from the outdoor unit. How to Respond This is not a malfunction. This may occur when the operation gets started in the room of high humidity. Cooling; when pipes or piping joints are cooled, they get sweated and water drips down. Heating; water drips down from the heat exchanger.
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OC374A--2.qxp 06.7.26 5:54 PM Page 56 10-6. HOW TO CHECK THE PARTS PUHZ-RP35VHA2 PUHZ-RP50VHA2 PUHZ-RP60VHA2 PUHZ-RP71VHA2 PUHZ-RP100VHA2 PUHZ-RP125VHA2 PUHZ-RP140VHA2 PUHZ-RP100YHA2 PUHZ-RP125YHA2 PUHZ-RP140YHA2 Check points Parts name Thermistor (TH3) Disconnect the connector then measure the resistance using a tester.
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OC374A--2.qxp 06.7.26 5:54 PM Page 57 Check method of DC fan motor (fan motor / outdoor controller circuit board) 1 Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Give attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor controller circuit board and fan motor.) 2 Self check Symptom : The outdoor fan cannot turn around.
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OC374A--2.qxp 06.7.26 5:54 PM Page 58 10-7. HOW TO CHECK THE COMPONENTS 50 Low temperature thermistors (TH3) (TH6) (TH7) (TH33) 40 Resistance (k") • Thermistor • Thermistor • Thermistor • Thermistor Thermistor R0 = 15k' ± 3% B constant = 3480 ± 2% 1 1 Rt =15exp{3480( 273+t – 273 )} 0: 15k' 30: 4.3k' 10: 9.6k' 40: 3.0k' 20: 6.3k' 25: 5.
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OC374A--2.qxp 06.7.26 5:54 PM Page 59 Linear expansion valve (RP35-RP71) (1) Operation summary of the linear expansion valve. • Linear expansion valve open/close through stepping motor after receiving the pulse signal from the outdoor controller board. • Valve position can be changed in proportion to the number of pulse signal.
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OC374A--2.qxp 06.7.26 5:54 PM Page 60 (RP100-RP140) Linear expansion valve (1) Operation summary of the linear expansion valve. • Linear expansion valve open/close through stepping motor after receiving the pulse signal from the outdoor controller board. • Valve position can be changed in proportion to the number of pulse signal.
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OC374A--3.qxp 06.7.26 5:55 PM Page 61 (3) How to attach and detach the coil of linear expansion valve (RP35-RP71) Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Main body Coil Lead wire Stopper Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward. Be sure to detach the coil holding main body firmly.
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OC374A--3.qxp 06.7.26 5:55 PM Page 62 (4) How to attach and detach the coil of linear expansion valve (RP100-RP140) Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Stopper Main body Coil Lead wire Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward. Be sure to detach the coil holding main body firmly.
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OC374A--3.qxp 06.7.26 5:55 PM Page 63 10-8. EMERGENCY OPERATION (1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency operation switch (SWE) to ON and short-circuiting the connector (CN31) on outdoor controller board. ●When following abnormalities occur, emergency operation will be available.
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OC374A--3.qxp 06.7.26 5:55 PM Page 64 (5) Operation data during emergency operation During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation are set to the following values: Operation mode Operation data Remarks COOL HEAT Intake temperature (TH1) 27: 20.
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OC374A--3.qxp 06.7.26 5:55 PM Page 65 10-9. TEST POINT DIAGRAM TEST POINT1 is high voltage.
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OC374A--3.qxp 06.7.26 5:55 PM Page 66 Outdoor noise filter circuit board PUHZ-RP35VHA2 PUHZ-RP50VHA2 LI, NI Voltage of 220-240V AC is input. (Connect to the terminal block(TB1)) EI Connect to the earth CNAC1, CNAC2 220-240V AC (Connect to the outdoor controller circuit board (CNAC)) CN5 Primary current (Connect to the outdoor power circuit board (CN5)) LO, NO Voltage of 220-240V AC is output.
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OC374A--3.qxp 06.7.26 5:55 PM Page 67 Outdoor noise filter circuit board PUHZ-RP60VHA2 PUHZ-RP71VHA2 EI Connect to the earth CNAC1, CNAC2 220-240V AC (Connect to the outdoor controller circuit board (CNAC)) CN5 Primary current (Connect to the outdoor power circuit board (CN5)) CN52C 52C relay signal (Connect to the outdoor controller circuit board (CN52C)) LO, NO Voltage of 220-240V AC is output. (Connect ACL) 67 LI, NI Voltage of 220-240V AC is input.
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OC374A--3.qxp 06.7.26 5:56 PM Page 70 Brief Check of DIP-IPM and DIP-PFC W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken. 1. Check of DIP-IPM P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W 2.
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OC374A--3.qxp 06.7.26 5:56 PM Page 71 Outdoor power circuit board PUHZ-RP100VHA2 PUHZ-RP125VHA2 PUHZ-RP140VHA2 CN2 Connect to the outdoor controller circuit board (CN2) 1-5:Transmitting signal to the outdoor controller circuit board (0~5V DC) 2-5:Zero cross signal (0~5V DC) 3,4:Not used 6-5:16V DC 7-5:16V DC Brief Check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.).
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OC374A--3.qxp 06.7.26 5:56 PM Page 72 Brief Check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken. 1. Check of POWER MODULE 1.Check of DIODE circuit L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1 2.
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OC374A--3.qxp 06.7.26 5:56 PM Page 74 10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches Type of Switch No. switch 1 Compulsory defrosting 2 Abnormal history clear 3 Dip switch SW1 Action by the switch operation Function OFF Start Normal When compressor is working in heating operation.
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OC374A--3.qxp 06.7.26 5:56 PM Page 76 The blinking patterns of both LED1(green) and LED2(red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part ‘A-Control Service Tool (PAC-SK52ST)’ to connector CNM on outdoor controller board.
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OC374A--3.qxp 06.7.26 5:56 PM Indication Outdoor controller board LED1 (Green) LED2 (Red) Page 77 Contents Error Error Inspection method code w1 U2 1Check if stop valves are open. 3 blinking 1 blinking Abnormality of shell thermostat 2Check if connectors (TH4, LEV-A, and LEV-B) on outdoor controller and discharging temperature (TH4) board are not disconnected. Abnormality of super heat due U7 3Check if unit fills with specified amount of refrigerant.
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OC374A--3.qxp 06.7.26 5:56 PM Page 78 [When option part ‘A-Control Service Tool(PAC-SK52ST)’ is connected to outdoor controller board(CNM)] Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on ‘A-Control Service Tool’.
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OC374A--3.qxp 06.7.26 5:56 PM SW2 setting ON Page 79 Pipe temperature / Liquid(TH3) – 40~90 1 2 3 4 5 6 Discharge temperature (TH4) 3~217 ON 1 2 3 4 5 6 ON Explanation for display Unit – 40~90 (When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.) (Example) When -10:; 0.5 secs. 0.5secs. 2 secs. 10 : 3~217 (When the discharge thermistor detects 100: or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 105:; 0.5 secs. 0.
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OC374A--3.qxp 06.7.26 5:56 PM SW2 setting ON Page 80 Display detail Explanation for display Unit Pipe temperature / Liquid(TH3) on error occurring – 40~90 – 40~90 (When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.) (Example) When –15:; 0.5 secs. 0.5secs. 2 secs.
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OC374A--3.qxp 06.7.26 5:56 PM SW2 setting Page 81 Explanation for display Display detail The number of connected indoor units ON 0~3 (The number of connected indoor units are displayed.) Unit Unit 1 2 3 4 5 6 Capacity setting display Displayed as an outdoor capacity code.
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OC374A--3.qxp 06.7.26 5:56 PM SW2 setting ON Page 82 Explanation for display Display detail Indoor setting temperature 17~30 17~30 Outdoor pipe temperature / Cond./ Eva. (TH6) -39~88 -39~88 (When the temperature is 0: or less, “–” and temperature are displayed by turns.) Outdoor outside temperature (TH7) -39~88 -39~88 (When the temperature is 0: or less, “–” and temperature are displayed by turns.
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OC374A--3.qxp 06.7.26 5:56 PM SW2 setting ON Page 83 Explanation for display Display detail 0~100 (When the capacity is 100% hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 100%; 0.5 secs. 0.5secs. 2 secs. 1 00 Capacity save 0~100 When air conditioner is connected to M-NET and capacity save mode is demanded, “0”~”100” is displayed. 1 2 3 4 5 6 Unit % When there is no setting of capacity save “100” is displayed.
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OC374A--3.qxp 06.7.26 5:56 PM SW2 setting Page 84 Display detail Explanation for display LEV-A opening pulse on error occurring 0~480 0~480 (When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 130 pulse; 0.5 secs. 0.5secs. 2 secs.
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OC374A--3.qxp 06.7.26 5:56 PM SW2 setting Page 85 Display detail Explanation for display Unit Discharge super heat on error occurring SHd 0~255 0~255 (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 150°C; 0.5 secs. 0.5secs. 2 secs. 1 50 : 0~130 (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 115°C; 0.5 secs. 0.5secs. 2 secs.
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OC374A--3.qxp 11 06.7.26 5:56 PM Page 86 FUNCTION SETTING 11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set according to necessity using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1. (1) Functions available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number.
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OC374A--3.qxp 06.7.26 5:56 PM Page 87 11-1-1. Selecting functions using the wired remote controller First, try to familiarize yourself with the flow of the function selection procedure. In this section, an example of setting the room temperature detection position is given. For actual operations, refer to steps 1 to 0 .
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OC374A--3.qxp 06.7.26 5:56 PM Page 88 [Operating Procedure] 1 Check the setting items provided by function selection. If settings for a mode are changed by function selection, the functions of that mode will be changed accordingly. Check all the current settings according to steps 2 to 7 , fill in the "Check" column in Table 1, and then change them as necessary. For factory settings, refer to the indoor unit's installation manual. 2 Switch off the remote controller.
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OC374A--3.qxp 06.7.26 5:56 PM Page 89 11-1-2. Selecting functions using the wireless remote controller (Type C) Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refrigerant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller. [Flow of function selection procedure] The flow of the function selection procedure is shown below.
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OC374A--3.qxp 06.7.26 5:56 PM Page 90 11-2. FUNCTION SELECTION OF REMOTE CONTROLLER The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed. Item 2 Item 1 Language setting to display 1.Change Language ("CHANGE LANGUAGE") (1) Operation function limit setting (operation lock) ("LOCKING FUNCTION") 2.
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OC374A--4.qxp 06.7.26 5:59 PM Page 91 Flowchart of Function Setting Setting language (English) Normal display (Display when the air condition is not running) Hold down the E button and press the D button for 2 seconds. Hold down the E button and press the D button for 2 seconds. E Press the operation mode button. G Press the TIMER MENU button. D Press the TIMER ON/OFF button. Remote controller function selection mode Item1 Item2 G Dot display EN Change Language GE E F ES TEMP.
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OC374A--4.qxp 12 06.7.26 5:59 PM Page 92 MONITORING THE OPERATION DATABYTHE REMOTE CONTROLLER 12-1. HOW TO "MONITOR THE OPERATION DATA" • Turn on the [Monitoring the operation data] C Example) Request code "004" Discharge temperature 69; Refrigerant address "00" A D B (7) (3) (5) (1) (2) (6) (4) (1) Press the TEST B: Refrigerant address C: Data display area D: Request code display area button for three seconds so that [Maintenance mode] appears on the screen (at A ).
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OC374A--4.qxp 06.7.26 5:59 PM Page 93 12-2. REQUEST CODE LIST Request code * Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed. Description Request content (Display range) Unit 0 Operation state Refer to 12-2-1. Detail Contents in Request Code.
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06.7.26 5:59 PM Request code OC374A--4.qxp Page 94 Description Request content (Display range) Unit 50 Indoor unit-Control state Refer to 12-2-1.Detail Contents in Request Code. – 51 Outdoor unit-Control state Refer to 12-2-1.Detail Contents in Request Code. – 52 Compressor-Frequency control state Refer to 12-2-1.Detail Contents in Request Code. – 53 Outdoor unit-Fan control state Refer to 12-2-1.Detail Contents in Request Code.
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06.7.26 5:59 PM Request code OC374A--4.qxp Page 95 Description Request content (Display range) Unit 103 Error history 1 (latest) Displays error history. (" - - " is displayed if no history is present.) Code 104 Error history 2 (second to last) Displays error history. (" - - " is displayed if no history is present.) Code 105 Error history 3 (third to last) Displays error history. (" - - " is displayed if no history is present.
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06.7.26 5:59 PM Request code OC374A--4.qxp Page 96 Description Request content (Display range) Unit Remarks 153 154 155 Indoor-Fan operating time (After filter is reset) Indoor-Total operating time (Fan motor ON time) 0 – 9999 1 hour 0 – 9999 10 hours 156 0 – 255 Fan control data – For indoor fan phase control "00 **" "**" indicates fan control data. – For indoor fan pulsation control "00 **" "**" indicates fan control data.
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OC374A--4.qxp 06.7.26 5:59 PM Page 97 12-2-1.
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OC374A--4.qxp 06.7.26 5:59 PM Page 101 [Indoor unit – Model setting information] (Request code : 162) Data display 0 Display 0 See the table on the right.
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OC374A--4.qxp 13 06.7.26 5:59 PM Page 102 EASY MAINTENANCE FUNCTION ● Reduces maintenance work drastically. ● Enables you to check operation data of the indoor and outdoor units by remote controller. Furthermore, use of maintenance stable-operation control that fixes the operating frequency, allows smooth inspection, even for inverter models. Smooth Maintenance Function Discharge temperature 64: ● Conventional inspection work ●Outdoor unit ● ●Indoor unit ● Measure the intake air temperature.
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OC374A--4.qxp 06.7.26 5:59 PM Page 103 ● Data measurement When the operation is stabilized, measure operation data as explained below. (4) Press the [TEMP] buttons ( and ) to select the desired refrigerant address. [Screen B ] (5) Select the type of data to be displayed. After selecting, go to step (6).
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OC374A--4.qxp 06.7.26 5:59 PM Page 104 13-2.GUIDE FOR OPERATION CONDITION Result Check Points Retightened Outdoor Unit Good Retightened Indoor Unit Good Retightened (Insulation resistance) M" (Voltage) Cleanliness Outdoor Unit CleanliTemperature Temperature ness pressor Indoor Unit V 1 Accumulated operating time Com- Enter the temperature differences between 5 , 4 , 7 and 8 into the graph given below. Operation state is determined according to the plotted areas on the graph.
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OC374A--4.qxp 06.7.26 5:59 PM Page 105 13-3 INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION ■Remote controller button position A C B This air conditioner (Outdoor unit) can detect refrigerant leakage which may happen during a long period of use.In order to enable the leakage detection, the following settings are required to let the unit memorize the initial condition (initial refregerant amount).
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OC374A--4.qxp 06.7.26 5:59 PM Page 106 3. How to start "Judgment of refrigerant leakage " mode. To know the current condition of refrigerant amount, same operation must be performed. Please repeat the same procedure 1~3 as when "Initial learning operation" for "Checking operation". 4Press w CLOCK button and select the [GAS LEAK JUDGE] Refrigerant leakage detection (initial teaching) Refrigerant leakage detection judgment GAS LEAK TEST START 5Press FILTER GAS LEAK JUDGE ( ) button to confirm.
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OC374A--4.qxp 06.7.26 5:59 PM 14 Page 107 DISASSEMBLY PROCEDURE PUHZ-RP35VHA2 PUHZ-RP50VHA2 OPERATING PROCEDURE PHOTOS 1. Removing the top panel, service panel, front panel and back panel (1) Remove the top panel fixing screws (4 ✕ 10), one from the right and two from the eft side, and detach the top panel. Photo 1 Top panel Back panel (2) Remove 1 service panel fixing screw (4 ✕ 10) and detach the service panel by pulling it downward. (See photo 2.
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OC374A--4.qxp 06.7.26 5:59 PM Page 108 OPERATING PROCEDURE PHOTOS 3. Removing the electrical parts box Photo 5 (1) Remove the service panel. (See photo 2.) (2) Remove the top panel. (See photo 1.) (3) Remove the front panel. (See photo 1.) (4) Disconnect the indoor/outdoor connecting wire from terminal block.
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OC374A--4.qxp 06.7.26 5:59 PM Page 109 OPERATING PROCEDURE PHOTOS 5. Removing the thermistor (TH7) Photo 7 (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Disconnect the connector TH7 (red) on the controller circuit board in the electrical parts box. (4) Loosen the clamp for the lead wire in the rear of the electrical parts box. (See photo 4.) (5) Pull out the thermistor (TH7) from the sensor holder.
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OC374A--4.qxp 06.7.26 5:59 PM Page 110 OPERATING PROCEDURE PHOTOS 8. Removing the four-way valve Photo 10 (1) Remove the service panel. (See photo 2.) (2) Remove the top panel. (See photo 1.) (3) Remove the front panel. (See photo 1.) (4) Remove the back panel. (See photo 1.) (5) Remove the electrical parts box. (See photo 5.) Linear expansion valve coil (LEV A) (6) Remove the solenoid valve coil (See photo 8.) Linear expansion (7) Collect the refrigerant.
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OC374A--4.qxp 06.7.26 5:59 PM Page 111 OPERATING PROCEDURE PHOTOS 12. Removing the motor for compressor (MC) (1) Remove the service panel. (See photo 2.) (2) Remove the top panel. (See photo 1.) (3) Remove the front panel. (See photo 1.) (4) Remove the back panel. (See photo 1.) (5) Remove the electrical parts box. (See photo 5.) (6) Remove 3 separator fixing screws (4 ✕ 10) and remove the separator. (7) Collect the refrigerant.
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OC374A--4.qxp 06.7.26 5:59 PM Page 112 PUHZ-RP60VHA2 PUHZ-RP71VHA2 PHOTOS & ILLUSTRATION OPERATING PROCEDURE 1. Removing the service panel and top panel (1) Remove 3 service panel fixing screws (5 ✕ 10) and slide the hook on the right downward to remove the service panel. (2) Remove screws (3 for front, 3 for rear/5 ✕ 10) of the top panel and remove it. Figure 1 Top panel fixing screws Top panel Slide Service panel Service panel fixing screws Fan grille Grill fixing screws 2.
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OC374A--4.qxp 06.7.26 5:59 PM Page 113 OPERATING PROCEDURE PHOTOS 4. Removing the thermistor (TH6) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Disconnect the connectors, TH6 and TH7 (red), on the controller circuit board in the electrical parts box. Photo 4 Electrical parts box Controller circuit board (C.B.) Thermistor (TH6) (4) Loosen the clamp for the lead wire in the rear of the electrical parts box.
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OC374A--4.qxp 06.7.26 5:59 PM Page 114 PHOTOS OPERATING PROCEDURE 7. Removing the solenoid valve coil (21S4), linear expansion valve coil (LEV(A), LEV(B)) and solenoid valve coil (SV) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove the electrical parts box. (See photo 3.) [Removing the solenoid valve coil ] (4) Remove solenoid valve coil fixing screw (M4 ✕ 6).
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OC374A--4.qxp 06.7.26 5:59 PM Page 115 OPERATING PROCEDURE PHOTOS 10. Removing the bypass valve (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove the electrical parts box. (See photo 3.) (4) Remove 3 right side panel fixing screws (5 ✕ 10) in the rear of the unit and remove the right side panel. (5) Remove the bypass valve solenoid coil. (See photo 7.). (6) Collect the refrigerant. (7) Remove the welded part of bypass valve.
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OC374A--4.qxp 06.7.26 5:59 PM Page 116 OPERATING PROCEDURE PHOTOS 13. Removing the motor for compressor (MC) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove 2 front cover panel fixing screws (5 ✕ 10) and remove the front cover panel. (See photo 3.) (4) Remove 2 back cover panel fixing screws (5 ✕ 10) and remove the back cover panel. (5) Remove the electrical parts box. (See photo 3.
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OC374A--4.qxp 06.7.26 5:59 PM Page 117 PUHZ-RP100VHA2 PUHZ-RP125VHA2 PUHZ-RP140VHA2 PHOTOS & ILLUSTRATION OPERATING PROCEDURE 1. Removing the service panel and top panel (1) Remove 3 service panel fixing screws (5 ✕ 10) and slide the hook on the right downward to remove the service panel. (2) Remove screws (3 for front, 3 for rear/5 ✕ 10) of the top panel and remove it. Figure 1 Top panel fixing screws Grille fixing screws Slide Top panel Service panel Fan grille Grille fixing screws 2.
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OC374A--4.qxp 06.7.26 5:59 PM Page 118 OPERATING PROCEDURE PHOTOS 4. Removing the thermistor (TH6) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Disconnect the connectors, TH6 and TH7 (red), on the controller circuit board in the electrical parts box. (4) Loosen the clamp for the lead wire in the rear of the electrical parts box. (5) Pull out the thermistor (TH6) from the sensor holder.
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OC374A--4.qxp 06.7.26 5:59 PM Page 119 PHOTOS OPERATING PROCEDURE 7. Removing the solenoid valve coil (21S4), and linear expansion valve coil (LEV(A), LEV(B)) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) [Removing the solenoid valve coil ] (3) Remove four-way valve solenoid coil fixing screw (M4 ✕ 6). (4) Remove the solenoid valve coil by sliding the coil toward you.
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OC374A--4.qxp 06.7.26 5:59 PM Page 120 OPERATING PROCEDURE PHOTOS 10. Removing solenoid valve coil (SV) and bypass valve (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove 3 right side panel fixing screws (5 ✕ 10) in the rear of the unit and remove the right side panel. (4) Remove the bypass valve solenoid coil fixing screw (M4 ✕ 6). (5) Remove the solenoid valve coil by sliding the coil upward.
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OC374A--5.qxp 06.7.26 6:00 PM Page 121 OPERATING PROCEDURE PHOTOS 13. Removing the motor for compressor (MC) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove 2 front cover panel fixing screws (5 ✕ 10) and remove the front cover panel. (See photo 3.) (4) Remove 2 back cover panel fixing screws (5 ✕ 10) and remove the back cover panel. (5) Remove the electrical parts box. (See photo 3.
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OC374A--5.qxp 06.7.26 6:00 PM Page 122 PUHZ-RP100YHA2 PUHZ-RP125YHA2 PUHZ-RP140YHA2 PHOTOS & ILLUSTRATION OPERATING PROCEDURE 1. Removing the service panel and top panel (1) Remove 3 service panel fixing screws (5 ✕ 10) and slide the hook on the right downward to remove the service panel. (2) Remove screws (3 for front, 3 for rear/5 ✕ 10) of the top panel and remove it. Figure 1 Top panel fixing screws Grille fixing screws Slide Top panel Service panel Fan grille Grille fixing screws 2.
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OC374A--5.qxp 06.7.26 6:00 PM Page 123 From the previous page. PHOTOS & ILLUSTRATION OPERATING PROCEDURE (6) Remove the terminal cover and disconnect the compressor lead wire. (7) Remove 2 electrical parts box fixing screws (4 ✕ 10) and detach the electrical parts box by pulling it upward. The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right. Photo 4 Electrical parts box Electrical parts box fixing screw 4.
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OC374A--5.qxp 06.7.26 6:00 PM Page 124 PHOTOS OPERATING PROCEDURE 5. Removing the thermistor (TH6) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Disconnect the connectors, TH6 and TH7 (red), on the controller circuit board in the electrical parts box. (4) Loosen the 2 wire clamps on top of the electrical parts box. (5) Pull out the thermistor (TH6) from the sensor holder.
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OC374A--5.qxp 06.7.26 6:00 PM Page 125 PHOTOS OPERATING PROCEDURE 8. Removing the solenoid valve coil (21S4), Photo 13 and linear expansion valve coil (LEV(A), LEV(B)) (1) Remove the service panel. (See figure 1.) Solenoid valve coil (2) Remove the top panel. (See figure 1.) [Removing the solenoid valve coil ] (3) Remove four-way valve solenoid coil fixing screw (M4 ✕ 6). (4) Remove the solenoid valve coil by sliding the coil toward you.
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OC374A--5.qxp 06.7.26 6:00 PM Page 126 OPERATING PROCEDURE PHOTOS 11. Removing solenoid valve coil (SV) and bypass valve (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove 3 right side panel fixing screws (5 ✕ 10) in the rear of the unit and remove the right side panel. (4) Remove the bypass valve solenoid coil fixing screw (M4 ✕ 6). (5) Remove the solenoid valve coil by sliding the coil upward.
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OC374A--5.qxp 06.7.26 6:00 PM Page 127 OPERATING PROCEDURE PHOTOS 13. Removing the reactors (ACL1, ACL2, ACL3) Photo 17 (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove the 6 screws, screw 8 and 9 (5 ✕ 10), that fix the front panel and remove the front panel. (See photo 3.
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OC374A--5.qxp 06.7.26 6:00 PM Page 128 OPERATING PROCEDURE PHOTOS 14. Removing the motor for compressor (MC) Photo 20 (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove 2 front cover panel fixing screws (5 ✕ 10) and remove the front cover panel. (See photo 3.) (4) Remove 2 back cover panel fixing screws (5 ✕ 10) and Valve bed remove the back cover panel. (5) Remove the electrical parts box. (See photo 3.
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OC374A--5.qxp 06.7.26 6:00 PM 15 Page 129 PARTS LIST (non-RoHS compliant) STRUCTURAL PARTS PUHZ-RP35VHA2 PUHZ-RP50VHA2 10 9 8 7 6 13 12 1 11 2 3 4 , Q ty/set No. Part No.
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OC374A--5.qxp 06.7.26 6:00 PM STRUCTURAL PARTS PUHZ-RP60VHA2 PUHZ-RP71VHA2 Page 130 17 1 18 16 2 15 14 13 12 9 5 6 7 8 9 11 10 3 4 Q,ty/set No. 1 Part No. — Part Name F.
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OC374A--5.qxp 06.7.26 6:00 PM Page 131 STRUCTURAL PARTS PUHZ-RP100VHA2 PUHZ-RP125VHA2 PUHZ-RP140VHA2 PUHZ-RP100YHA2 PUHZ-RP125YHA2 PUHZ-RP140YHA2 17 2 1 18 16 15 14 13 12 9 3 6 7 5 8 9 11 10 4 No. Part No. 1 — Part Name Specification , Q ty/set PUHZ-RP 100, 125, 140 VHA2 YHA2 (5✕10) 38 38 2 T7W E02 662 SIDE PANEL (L) 1 1 3 T7W E02 691 FAN GRILLE 2 2 4 T7W E02 667 FRONT PANEL 1 1 5 — F.
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OC374A--5.qxp 06.7.26 6:00 PM Page 133 Part numbers that are circled are not shown in the figure. No. Part No. Part Name Specification , Q ty/set Price PUHZ-RP50VHA2 Unit Amount Wiring RecomRemarks Diagram mended PUHZ-RP35VHA2 (Drawing No.
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OC374A--5.qxp 06.7.26 6:00 PM Page 135 Part numbers that are circled are not shown in the figure. , Q ty/set No. Part No. Part Name Specification PUHZ-RP Remarks (Drawing No.) 60/71VHA2 1 R01 E44 221 FAN MOTOR EHDS81B86MS1 1 3 R01 E02 097 NUT 1 4 1 — ELECTRICAL PARTS BOX 5 T7W E15 242 SOLENOID VALVE COIL 1 6 R01 E11 428 BYPASS VALVE 1 7 R01 E15 425 CAPILLARY TUBE [4.0 ✕ [2.4 ✕ 500mm 1 8 R01 E16 425 CAPILLARY TUBE [2.5 ✕ [0.
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OC374A--5.qxp 06.7.26 6:01 PM Page 137 Part numbers that are circled are not shown in the figures. , Q ty/set No. Part No. Part Name Specification Price PUHZ-RP 100 125 140 Remarks (Drawing No.
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OC374A--5.qxp 06.7.26 6:01 PM Page 139 Part numbers that are circled are not shown in the figures. , Q ty/set No. Part No. Part Name Specification Price PUHZ-RP 100 125 140 Remarks (Drawing No.
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OC374A--5.qxp 16 06.7.
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OC374A--5.qxp 06.7.26 6:01 PM Page 141 No. RoHS Part numbers that are circled are not shown in the figure. Part No. Part Name Specification , Q ty/set Price PUHZ-RP50VHA2 Unit Amount Wiring RecomRemarks Diagram mended PUHZ-RP35VHA2 (Drawing No.
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OC374A--5.qxp 06.7.26 6:01 PM Page 143 Part numbers that are circled are not shown in the figure. , Q ty/set No. No. Part No. Part Name Specification PUHZ-RP Remarks (Drawing No.) 60/71VHA2 1 G R01 E44 221 FAN MOTOR EHDS81B86MS1 1 3 G R01 E09 097 NUT 1 4 G 1 — ELECTRICAL PARTS BOX 5 G T7W E15 242 SOLENOID VALVE COIL 1 6 G R01 E13 428 BYPASS VALVE 1 7 G R01 E24 425 CAPILLARY TUBE [4.0 ✕ [2.4 ✕ 500mm 1 8 G R01 E25 425 CAPILLARY TUBE [2.5 ✕ [0.
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OC374A--5.qxp 06.7.
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OC374A--5.qxp 06.7.26 6:01 PM Page 145 No. RoHS Part numbers that are circled are not shown in the figures. Part No. Part Name Specification , Q ty/set Price PUHZ-RP 100 125 140 Remarks (Drawing No.
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OC374A--5.qxp 06.7.
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OC374A--5.qxp 06.7.26 6:01 PM Page 147 Part numbers that are circled are not shown in the figures. No. RoHS , Q ty/set Part No. Part Name Specification Price PUHZ-RP 100 125 140 Remarks (Drawing No.
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OC374A--5.qxp 06.7.26 6:01 PM Page 148 STRUCTURAL PARTS PUHZ-RP35VHA2 PUHZ-RP50VHA2 10 9 8 7 6 13 12 No. RoHS 1 11 2 3 4 , Q ty/set Part No.
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OC374A--5.qxp 06.7.26 6:01 PM Page 149 STRUCTURAL PARTS PUHZ-RP60VHA2 PUHZ-RP71VHA2 17 1 18 16 2 15 14 13 12 9 5 6 7 8 9 11 10 No. RoHS 3 1 G 4 Q,ty/set Part No. — Part Name F.
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OC374A--5.qxp 06.7.26 6:01 PM Page 150 17 STRUCTURAL PARTS PUHZ-RP100VHA2 PUHZ-RP125VHA2 PUHZ-RP140VHA2 PUHZ-RP100YHA2 PUHZ-RP125YHA2 PUHZ-RP140YHA2 2 1 18 16 15 14 13 12 9 3 5 6 7 8 9 11 10 4 No. RoHS , Q ty/set PUHZ-RP 100, 125, 140 VHA2 YHA2 Part No. 1 G — 38 38 2 G T7W E03 662 SIDE PANEL (L) 1 1 3 G T7W E03 691 FAN GRILLE 2 2 4 G T7W E06 667 FRONT PANEL 1 1 G 1 5 G — Part Name F.