Service manual

ManualsBrandsMitsubishi ManualsAir ConditionerPUHZ-SW100VHA.UK

SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

No.OC359

REVISED EDITION-A

R410A

July 2006

Outdoor unit

[model names]

PUHZ-P100VHA

PUHZ-P125VHA

PUHZ-P140VHA

[Service Ref.]

PUHZ-P100VHA.UK

PUHZ-P125VHA.UK

PUHZ-P140VHA.UK

PUHZ-P100VHA.UK

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 com-

pliant products, refer to the

RoHS Parts List.

Revision:

•

RoHS PARTS LIST

is added.

• Some descriptions have

been modified.

• Please void OC359.

CONTENTS

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

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

3. FEATURES ·····················································6

4. SPECIFICATIONS···········································7

5. DATA ·······························································8

6. OUTLINES AND DIMENSIONS····················11

7. WIRING DIAGRAM·······································13

8. WIRING SPECIFICATIONS ··························14

REFRIGERANT SYSTEM DIAGRAM

··············19

10. TROUBLESHOOTING ··································21

11. FUNCTION SETTING····································70

12. EASY MAINTENANCE FUNCTION··············76

13.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

············79

14. DISASSEMBLY PROCEDURE ·····················89

15. PARTS LIST ··················································99

16. RoHS PARTS LIST ·····································105

OC359A-1.qxp 06.7.12 3:06 PM Page 1

Summary of content (110 pages)

PAGE 1
OC359A-1.qxp 06.7.12 3:06 PM Page 1 SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS July 2006 No.OC359 REVISED EDITION-A SERVICE MANUAL R410A Outdoor unit [model names] PUHZ-P100VHA PUHZ-P125VHA PUHZ-P140VHA [Service Ref.] PUHZ-P100VHA.UK PUHZ-P125VHA.UK PUHZ-P140VHA.UK Revision: • RoHS PARTS LIST is added. • Some descriptions have been modified. • Please void OC359. Note: • This manual describes only service data of the outdoor units. • RoHS compliant products have mark on the spec name plate.
PAGE 2
OC359A-1.qxp 1 06.7.12 3:06 PM Page 2 REFERENCE MANUAL 1-1. INDOOR UNIT’S SERVICE MANUAL Service Manual No. Model name Service Ref. PLA-RP50/60/71AA PLA-RP50/60/71AA.UK OC335 PLA-RP100/125/140AA2 PLA-RP100/125/140AA2.UK OC357 PCA-RP50/60/71GA PCA-RP100/125/140GA PKA-RP50GAL PCA-RP50/60/71GA PCA-RP100/125/140GA PKA-RP50GAL OC328 OC330 PKA-RP60/71/100FAL PKA-RP60/71/100FAL OC331 PEAD-RP50/60/71/125/140EA PEAD-RP100EA2 PEAD-RP50/60/71/125/140EA.UK PEAD-RP100EA2.
PAGE 3
OC359A-1.qxp 06.7.12 3:06 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. · Be sure to clean the pipes and make sure that the insides of the pipes are clean. · Change flare nut to the one provided with this product. Use a newly flared pipe. · Avoid using thin pipes.
PAGE 4
OC359A-1.qxp 06.7.12 3:06 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.
PAGE 5
OC359A-1.qxp 06.7.12 3:06 PM Page 5 (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.
PAGE 6
OC359A-1.qxp 3 06.7.12 3:06 PM Page 6 FEATURES PUHZ-P125VHA.UK PUHZ-P140VHA.UK PUHZ-P100VHA.UK CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max.30m(PUHZ-P125/P140)) The refrigerant circuit with LEV(Linear Expansion Valve) and Accumlator always control the optimal refrigerant level regardless of the length (30m max. and 5m min.) of piping. The additional refrigerant charging work during installation often causes problems. Heretofore it is completely eliminated.
PAGE 7
OC359A-1.qxp 06.7.12 3:06 PM 4 Page 7 SPECIFICATIONS Service Ref. PUHZ-P100VHA.UK 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.
PAGE 8
OC359A-1.qxp 06.7.12 3:06 PM 5 Page 8 DATA 5-1. REFILLING REFRIGERANT CHARGE (R410A : kg) 10m Piping length (one way) 30m 40m 20m 50m Factory charged PUHZ-P100VHA.UK 2.6 2.7 3.3 3.9 4.5 2.7 PUHZ-P125VHA.UK 4.3 4.4 4.5 5.1 5.7 4.5 PUHZ-P140VHA.UK 4.3 4.4 4.5 5.1 5.7 4.5 Service Ref. Longer pipe than 20 or 30m, additional charge is required. 5-2. COMPRESSOR TECHNICAL DATA (at 20°C) Unit PUHZ-P100VHA.UK PUHZ-P125,140VHA.
PAGE 9
OC359A-1.qxp 06.7.12 3:06 PM Page 9 5-3. NOISE CRITERION CURVES PUHZ-P100VHA.UK MICROPHONE MODE SPL(dB) COOLING 50 HEATING 54 1m UNIT LINE 1.5m GROUND OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar) 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 63 125 NC-20 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz PUHZ-P125VHA.UK MODE SPL(dB) COOLING 51 HEATING 55 PUHZ-P140VHA.
PAGE 10
OC359A-1.qxp 06.7.12 3:06 PM Page 10 5-4. STANDARD OPERATION DATA PLA-RP100AA2 Representative matching Electrical circuit Total Mode Heating Cooling Heating Cooling Heating Capacity W 9,400 11,200 12,300 14,000 13,600 16,000 Input kW 3.12 3.28 4.09 4.11 5.21 4.98 Indoor unit PLA-RP100AA2 PLA-RP125AA2 PLA-RP140AA2 Phase , Hz 1 , 50 1 , 50 1 , 50 Volts V 230 230 230 Input kW 0.18 0.18 0.18 A 0.92 0.92 0.
PAGE 11
Ov er 1 0m m FREE Ov er 1 0m m Over10 Service space Example of Notes mm 00 500 Over Over Front piping hole (Knock-Out) Front trunking hole (Knock-Out) 92 {92 40 65 45 Power supply wiring hole (2-{27Knock-Out) 19 92 75 55 Less than Over100 65 45 92 { 92 40 FOUNDATION Rear piping hole (Knock-Out) Side Air Intake Handle for moving Handle for moving Rear Air Intake Piping and wiring connections can be made from 4 directions: FRONT,Right,Rear and Below.
PAGE 12
Ov er 1 0m m 10 Service space Over 500 Over Front piping hole (Knock-Out) 92 {92 65 Power supply wiring hole (2-{27Knock-Out) Front trunking hole 40 45 (Knock-Out) 19 92 75 Right piping hole (Knock-Out) Piping Knock-Out Hole Details 55 {92 Air intake Handle for moving w 1 ···Indication of STOP VALVE connection location. 2 ···Refrigerant LIQUID pipe connection (FLARE){ 9.52(3/8F) 1 ···Refrigerant GAS pipe connction (FLARE){15.
PAGE 13
OC359A-1.qxp 06.7.12 3:06 PM 7 Page 13 WIRING DIAGRAM PUHZ-P100VHA.UK PUHZ-P125VHA.UK PUHZ-P140VHA.UK T6.
PAGE 14
OC359A-1.qxp 8 06.7.12 3:06 PM Page 14 WIRING SPECIFICATIONS 8-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model Outdoor unit power supply P100, 125V ~/N (single), 50 Hz, 230 V *1 Circuit rating Wiring Wire No.
PAGE 15
OC359A-1.qxp 06.7.12 3:06 PM Page 15 8-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES The following connection patterns are available. The outdoor unit power supply patterns vary on models.
PAGE 16
OC359A-1.qxp 06.7.12 3:06 PM Page 16 8-3. INDOOR – OUTDOOR CONNECTING CABLE The cable shall not be lighter than design 245 IEC or 227 IEC. The cable length may vary depending on the condition of installation, humidity or materials, etc. Cross section of cable Wire size (mm2) Number of wires 2.5 3 Clockwise : S1-S2-S3 2.5 3 Not applicable (Because center wire has no cover finish) 1.5 4 From left to right : S1-Open-S2-S3 (45) ✽3 2.
PAGE 17
OC359A-1.qxp 06.7.12 3:06 PM Page 17 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.
PAGE 18
OC359A-1.qxp 06.7.12 3:06 PM Page 18 ● 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.
PAGE 19
OC359A-1.qxp 06.7.12 3:06 PM 9 Page 19 REFRIGERANT SYSTEM DIAGRAM Unit : mm PUHZ-P100VHA.UK Bypass valve Ball valve (#50) Refrigerant GAS pipe Strainer 15.88A({5/8") 4-way valve Service port (check) High pressure protect switch Outdoor heat exchanger Thermistor (TH6) Thermistor (TH3) Service port (check) Muffler Thermistor (TH4) Distributor Accumulator Strainer (#40) Compressor (#100) Strainer Refrigerant LIQUID pipe 9.
PAGE 20
OC359A-1.qxp 06.7.12 3:06 PM Page 20 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.
PAGE 21
OC359A-1.qxp 06.7.12 3:06 PM 10 Page 21 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.
PAGE 22
OC359A-1.qxp 06.7.12 3:06 PM Page 22 "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.
PAGE 23
OC359A-1.qxp 06.7.12 3:06 PM Page 23 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.
PAGE 24
OC359A-1.qxp 06.7.12 3:06 PM Page 24 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".
PAGE 25
OC359A-1.qxp 06.7.12 3:06 PM D Press the Page 25 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.
PAGE 26
OC359A-1.qxp 06.7.12 3:06 PM Page 26 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.
PAGE 27
OC359A-1.qxp 06.7.12 3:06 PM Page 27 • 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.
PAGE 28
OC359A-1.qxp 06.7.12 3:06 PM Page 28 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. block(TB1) of outdoor unit. a) Power supply breaker a) Power supply breaker is put b) Connection of power supply terminal block. off.
PAGE 29
OC359A-1.qxp 06.7.12 3:06 PM Page 29 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.
PAGE 30
OC359A-1.qxp 06.7.12 3:06 PM Page 30 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.
PAGE 31
OC359A-2.qxp 06.7.12 3:07 PM Page 31 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.
PAGE 32
OC359A-2.qxp 06.7.12 3:07 PM Page 32 Error Code Meaning of error code and detection method U8 (4400) Case Abnormality in the outdoor fan motor 1 Failure in the operation of The outdoor fan motor is considered to be the DC fan motor abnormal if the rotational frequency of fan 2 Failure in the outdoor circuit motor is abnormal when detected during controller board operation.
PAGE 33
OC359A-2.qxp 06.7.12 3:07 PM Page 33 Error Code Meaning of error code and detection method UP (4210) Case Compressor overcurrent interruption 1 Stop valve of outdoor unit is Abnormal if overcurrent DC bus or comclosed. pressor is detected after compressor starts 2 Decrease of power supply voltoperating for 30 seconds.
PAGE 34
OC359A-2.qxp 06.7.12 3:07 PM Page 34 Error Code Meaning of error code and detection method Remote controller transmission error(E3)/signal receiving error(E5) 1 Abnormal if remote controller could not find blank of transmission path for six seconds and could not transmit. (Error code: E3) 2 Remote controller receives transmitted data at the same time, compares the data, and when detecting it, judges different data to be abnormal 30 E3 continuous times.
PAGE 35
OC359A-2.qxp 06.7.12 3:07 PM Page 35 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.
PAGE 36
OC359A-2.qxp 06.7.12 3:07 PM Page 36 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.
PAGE 37
OC359A-2.qxp 06.7.12 3:07 PM Page 37 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).
PAGE 38
OC359A-2.qxp 06.7.12 3:07 PM Page 38 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).
PAGE 39
OC359A-2.qxp 06.7.12 3:07 PM Page 39 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.
PAGE 40
OC359A-2.qxp 06.7.12 3:07 PM Page 40 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.
PAGE 41
OC359A-2.qxp 06.7.12 3:07 PM Page 41 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.
PAGE 42
OC359A-2.qxp 06.7.12 3:07 PM Page 42 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.
PAGE 43
OC359A-2.qxp 06.7.12 3:07 PM Page 43 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.
PAGE 44
OC359A-2.qxp 06.7.12 3:07 PM Page 44 • 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.
PAGE 45
OC359A-2.qxp 06.7.12 3:07 PM Page 45 Phone Calls From Customers How to Respondm 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.
PAGE 46
OC359A-2.qxp 06.7.12 3:07 PM Page 46 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.
PAGE 47
OC359A-2.qxp 06.7.12 3:07 PM Page 47 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.
PAGE 48
OC359A-2.qxp 06.7.12 3:07 PM Page 48 10-6. HOW TO CHECK THE PARTS PUHZ-P100VHA.UK PUHZ-P125VHA.UK PUHZ-P140VHA.UK Check points Parts name Thermistor (TH3) Disconnect the connector then measure the resistance using a tester. (Surrounding temperature 10:~30:) Thermistor (TH4) Abnormal Normal TH4 160k"~410k" Thermistor (TH6) TH3 Thermistor (TH7) TH6 Open or short 4.3k"~9.
PAGE 49
OC359A-2.qxp 06.7.12 3:07 PM Page 49 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.
PAGE 50
OC359A-2.qxp 06.7.12 3:07 PM Page 50 10-7. HOW TO CHECK THE COMPONENTS 50 Low temperature thermistors • Thermistor (TH3) • Thermistor (TH6) • Thermistor (TH7) Resistance (k") 40 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.
PAGE 51
OC359A-2.qxp 06.7.12 3:07 PM Page 51 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.
PAGE 52
OC359A-2.qxp 06.7.12 3:07 PM Page 52 (3) How to attach and detach the coil of linear expansion valve 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. Otherwise pipes can bend due to pressure.
PAGE 53
OC359A-2.qxp 06.7.12 3:07 PM Page 53 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.
PAGE 54
OC359A-2.qxp 06.7.12 3:07 PM Page 54 (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.
PAGE 55
OC359A-2.qxp 06.7.12 3:07 PM Page 55 10-9. TEST POINT DIAGRAM Outdoor controller circuit board PUHZ-P100VHA.UK PUHZ-P125VHA.UK PUHZ-P140VHA.UK CNS Communication power supply ZD71 Voltage developed across: 16-30V DC (Indoor/outdoor unit connecting wire) TEST POINT1 is high voltage.
PAGE 56
OC359A-2.qxp 06.7.12 3:07 PM Page 56 Outdoor noise filter circuit board PUHZ-P100VHA.UK PUHZ-P125VHA.UK PUHZ-P140VHA.
PAGE 57
OC359A-2.qxp 06.7.12 3:07 PM Page 57 Outdoor power circuit board PUHZ-P100VHA.UK PUHZ-P125VHA.UK PUHZ-P140VHA.UK 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) 3,4:18V DC 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.).
PAGE 58
OC359A-2.qxp 06.7.12 3:07 PM Page 58 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.
PAGE 59
OC359A-2.qxp 06.7.
PAGE 60
OC359A-2.qxp 06.7.12 3:07 PM Page 60 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.
PAGE 61
OC359A-3.qxp 06.7.12 3:08 PM Indication Outdoor controller board LED1 (Green) LED2 (Red) Page 61 Error Contents Error code w1 3 blinking 1 blinking Abnormality of shell thermostat U2 and discharging temperature (TH4) Inspection method Detailed reference page 1Check if stop valves are open. 2Check if connectors (TH4, LEV-A) on outdoor controller board are not disconnected. 3Check if unit fills with specified amount of refrigerant.
PAGE 62
OC359A-3.qxp 06.7.12 3:08 PM Page 62 [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’.
PAGE 63
OC359A-3.qxp 06.7.12 3:08 PM SW2 setting ON Page 63 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.
PAGE 64
OC359A-3.qxp 06.7.12 3:08 PM SW2 setting ON Page 64 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.
PAGE 65
OC359A-3.qxp 06.7.12 3:08 PM SW2 setting Page 65 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.
PAGE 66
OC359A-3.qxp 06.7.12 3:08 PM SW2 setting ON Page 66 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.
PAGE 67
OC359A-3.qxp 06.7.12 3:08 PM SW2 setting ON Page 67 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.
PAGE 68
OC359A-3.qxp 06.7.12 3:08 PM SW2 setting Page 68 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.
PAGE 69
OC359A-3.qxp 06.7.12 3:08 PM SW2 setting Page 69 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.

PAGE 70

OC359A-3.qxp 06.7.12 3:08 PM 11 Page 70 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.

Function selections (1) Functions available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number.

PAGE 71

OC359A-3.qxp 06.7.12 3:08 PM Page 71 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 .

PAGE 72

OC359A-3.qxp 06.7.12 3:08 PM Page 72 [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.

PAGE 73

OC359A-3.qxp 06.7.12 3:08 PM Page 73 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.

PAGE 74

OC359A-3.qxp 06.7.12 3:08 PM Page 74 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.

PAGE 75

OC359A-3.qxp 06.7.12 3:08 PM Page 75 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.

PAGE 76

OC359A-3.qxp 12 06.7.12 3:08 PM Page 76 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.

PAGE 77

OC359A-3.qxp 06.7.12 3:08 PM Page 77 ● 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).

PAGE 78

OC359A-3.qxp 06.7.12 3:08 PM Page 78 12-2.GUIDE FOR OPERATION CONDITION Check Points Retightened Outdoor Unit Good Retightened Indoor Unit Good Retightened (Insulation resistance) M" (Voltage) CleanliTemperature ness Temperature Cleanliness Outdoor Unit 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.

PAGE 79

OC359A-3.qxp 06.7.12 3:08 PM 13 Page 79 MONITORING THE OPERATION DATABYTHE REMOTE CONTROLLER 13-1. 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 ).

PAGE 80

OC359A-3.qxp 06.7.12 3:08 PM Page 80 13-2. 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 13-2-1. Detail Contents in Request Code.

PAGE 81

06.7.12 3:08 PM Request code OC359A-3.qxp Page 81 Description Request content (Display range) Unit 50 Indoor unit-Control state Refer to 13-2-1.Detail Contents in Request Code. – 51 Outdoor unit-Control state Refer to 13-2-1.Detail Contents in Request Code. – 52 Compressor-Frequency control state Refer to 13-2-1.Detail Contents in Request Code. – 53 Outdoor unit-Fan control state Refer to 13-2-1.Detail Contents in Request Code.

PAGE 82

06.7.12 3:08 PM Request code OC359A-3.qxp Page 82 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.

PAGE 83

06.7.12 3:08 PM Request code OC359A-3.qxp Page 83 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.

PAGE 84

OC359A-3.qxp 06.7.12 3:08 PM Page 84 13-2-1.

PAGE 85

OC359A-3.qxp 06.7.

PAGE 86

OC359A-3.qxp 06.7.

PAGE 87

OC359A-3.qxp 06.7.

PAGE 88

OC359A-3.qxp 06.7.12 3:08 PM Page 88 [Indoor unit – Model setting information] (Request code : 162) Data display 0 Display 0 See the table on the right.

PAGE 89

OC359A-3.qxp 06.7.12 3:08 PM 14 Page 89 DISASSEMBLY PROCEDURE PUHZ-P100VHA.UK PUHZ-P125VHA.UK PUHZ-P140VHA.UK 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.

PAGE 90

OC359A-3.qxp 06.7.12 3:08 PM Page 90 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. Thermistor (TH6) Photo 4 (4) Loosen the clamp for the lead wire of the electrical parts box.

PAGE 91

OC359A-4.qxp 06.7.12 3:09 PM Page 91 PHOTOS OPERATING PROCEDURE 7. Removing the solenoid valve coil (21S4), linear expansion valve coil (LEV(A)) 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).

PAGE 92

OC359A-4.qxp 06.7.12 3:09 PM Page 92 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.

PAGE 93

OC359A-4.qxp 06.7.12 3:09 PM Page 93 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.

PAGE 94

OC359A-4.qxp 06.7.12 3:09 PM Page 94 PUHZ-P125VHA.UK PUHZ-P140VHA.UK 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 Service panel Slide Grille fixing screws Fan grille Grille fixing screws 2.

PAGE 95

OC359A-4.qxp 06.7.12 3:09 PM Page 95 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.

PAGE 96

OC359A-4.qxp 06.7.12 3:09 PM Page 96 PHOTOS OPERATING PROCEDURE 7. Removing the solenoid valve coil (21S4), and linear expansion valve coil (LEV(A)) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) Photo 7 [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.

PAGE 97

OC359A-4.qxp 06.7.12 3:09 PM Page 97 OPERATING PROCEDURE PHOTOS 10. Removing the high pressure switch (63H) (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) Pull out the lead wire of high pressure switch. (5) Collect the refrigerant. (6) Remove the welded part of high pressure switch.

PAGE 98

OC359A-4.qxp 06.7.12 3:09 PM Page 98 OPERATING PROCEDURE PHOTOS 12. 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.

PAGE 99

OC359A-4.qxp 06.7.12 3:09 PM 15 Page 99 PARTS LIST ( non-RoHS compliant ) STRUCTURAL PARTS PUHZ-P100VHA.UK 16 1 17 14 13 15 2 12 9 5 6 7 8 9 11 10 3 No. 1 4 Part No. — Part Name F.ST SCREW Specification (5✕10) , Q ty/set PUHZ-P 100 VHA.

PAGE 100

OC359A-4.qxp 06.7.12 3:09 PM Page 100 FUNCTIONAL PARTS PUHZ-P100VHA.

PAGE 101

OC359A-4.qxp 06.7.12 3:09 PM Page 101 Part numbers that are circled are not shown in the figures. No. Part No. Part Name Specification , Q ty/set PUHZ-P 100 VHA.UK Remarks (Drawing No.

PAGE 102

OC359A-4.qxp 06.7.12 3:09 PM Page 102 FUNCTIONAL PARTS PUHZ-P125VHA.UK PUHZ-P140VHA.

PAGE 103

OC359A-4.qxp 06.7.12 3:09 PM Page 103 Part numbers that are circled are not shown in the figures. , Q ty/set No. Part No. Part Name Specification Price PUHZ-P 125 140 Remarks (Drawing No.) Wining RecomDiagram mended , Symbol Q ty VHA.

PAGE 104

OC359A-4.qxp 06.7.12 3:09 PM Page 104 STRUCTURAL PARTS PUHZ-P125VHA.UK PUHZ-P140VHA.UK 16 2 1 17 15 14 13 12 9 3 5 6 7 8 9 11 10 4 No. Part No. 1 — Part Name F.ST SCREW Specification (5✕10) , Q ty/set PUHZ-P 125, 140 VHA.UK Remarks (Drawing No.

PAGE 105

OC359A-4.qxp 06.7.12 3:09 PM 16 Page 105 RoHS PARTS LIST STRUCTURAL PARTS PUHZ-P100VHA.UK 16 1 17 14 13 15 2 12 9 5 6 7 8 9 11 10 3 , Q ty/set PUHZ-P 100 VHA.UK 31 RoHS 4 Part No. 1 G — 2 G S70 E10 662 SIDE PANEL (L) 1 3 G S70 E20 675 FAN GRILLE 1 4 G S70 E10 668 FRONT PANEL 1 5 G 6 G S70 E10 686 BASE ASSY 1 7 G S70 E10 130 MOTOR SUPPORT 1 8 G 9 G S70 30L 655 HANDLE No. — — Part Name F.

PAGE 106

OC359A-4.qxp 06.7.12 3:09 PM Page 106 FUNCTIONAL PARTS PUHZ-P100VHA.

PAGE 107

OC359A-4.qxp 06.7.12 3:09 PM Page 107 No. RoHS Part numbers that are circled are not shown in the figures. Part No. Part Name Specification , Q ty/set PUHZ-P 100 VHA.UK Remarks (Drawing No.

PAGE 108

OC359A-4.qxp 06.7.12 3:09 PM Page 108 FUNCTIONAL PARTS PUHZ-P125VHA.UK PUHZ-P140VHA.

PAGE 109

OC359A-4.qxp 06.7.12 3:09 PM Page 109 Part numbers that are circled are not shown in the figures. No. RoHS , Q ty/set Part No. Part Name Specification Price PUHZ-P 125 140 Remarks (Drawing No.) Wining RecomDiagram mended , Symbol Q ty VHA.

PAGE 110

OC359A-4.qxp 06.7.12 3:09 PM Page 110 16 STRUCTURAL PARTS PUHZ-P125VHA.UK PUHZ-P140VHA.UK 2 1 17 15 14 13 12 9 3 5 6 7 8 9 11 10 No. RoHS 4 Part No. 1 G — Part Name F.ST SCREW Specification (5✕10) , Q ty/set PUHZ-P 125, 140 VHA.UK Remarks (Drawing No.