Mitsubishi PEH-P8- User Manual

Table of Contents:

• Page 2 – PAIRING TABLE OF THE INDOOR AND OUTDOOR UNITS
• Page 3 – SPECIFICATIONS FOR ELECTRICAL WORK; Wiring; Install an earth longer and thicker than other cables.; Synchronized twin and triple system Electrical wiring; • Synchronized twin; ww; Refer to ELECTRICAL WIRING of
• Page 4 – Check items; current may cause it to malfunction.
• Page 9 – shield wire for electric wires.
• Page 10 – WIRING DIAGRAM; MF
• Page 11 – TO OUTDOOR UNIT; MODELS
• Page 13 – INDOOR UNIT
• Page 21 – REFRIGERANT SYSTEM DIAGRAM; Overload operation; near the ISO T1 standard operating conditions.
• Page 22 – Heat exchanger
• Page 26 – -3. APPLICABLE EXTENSION PIPE FOR EACH MODEL; Use refrigerant R410A. Use charge hose exclusive for R410A.; Liquid pipe dia Chargeless
• Page 27 –
• Page 28 – Corrected pipe length; Cooling RP3
• Page 30 – Synchronized twin; m or less; Synchronized triple
• Page 31 – Note : The maximum pipe length is 80m in case of new piping.
• Page 34 – Pipe diameter and thickness; Lowered cooling capacity by the smaller gas pipe diameter; Capacity
  Page 35 – When length exceeds 70 m
  Page 36 – HOW TO CHECK THE PARTS; Drain sensor; Thermistor R
  Page 38 – Vane motor
  Page 44 – HOW TO CHECK THE COMPONENTS; Low temperature thermistors
  Page 45 –

  ; Linear expansion valve
  Page 48 – MICROPROCESSOR CONTROL; arious setting
  Page 54 – INDOOR UNIT CONTROL; • Liquid pipe temperature
  Page 61 – A Bc
  Page 62 – OUTDOOR UNIT CONTROL; Continued to the next page.
  Page 63 – From the previous page.
  Page 65 – Opening pulse range (Lower limit to upper limit)
  Page 79 – Normal air
  Page 82 – DIP SWITCH FUNCTION; type A
  Page 84 – Fixing method of the compressor operating frequency
  Page 85 – CNDM; Max. 10 m including local wiring
  Page 86 – Function of switches
  Page 87 – SW2 setting; Display detail; Operation indicator SW2 : Indicator change of self diagnosis; second; Operation mode display.
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  SERVICE TECHNICAL GUIDE

  CONTENTS

  1. PAIRING TABLE OF THE INDOOR AND OUTDOOR UNIT ·····2
  2. SPECIFICATIONS FOR ELECTRICAL WORK ·························3
  3. WIRING DIAGRAM ···································································10
  4. REFRIGERANT SYSTEM DIAGRAM ······································21
  5. HOW TO CHECK THE PARTS ················································36
  6. MICROPROCESSOR CONTROL·············································48
  7. INDOOR UNIT CONTROL························································54
  8. OUTDOOR UNIT CONTROL····················································62
  9. DIP SWITCH FUNCTION ·························································82

  10. FUNCTION SETTING ·······························································96
  11. TEST RUN • REPLACEMENT OPERATION

  & EMERGENCY OPERATION·················································106

  12. SELF-DIAGNOSIS ··································································112
  13. TEST POINT DIAGRAM ·························································140
  14. TROUBLESHOOTING ····························································155
  15. SYSTEM CONTROL ·······························································159

  <Indoor unit>

  [Model names]

  [Service Ref.]

  R410A

  PLA-RP·AA

  PLA-RP·AA

  PLA-RP·AA

  1

  PLA-RP·AA.UK

  PLA-RP·AA

  1

  .UK

  PKA-RP·GAL

  PKA-RP·GAL

  PKA-RP·FAL

  PKA-RP·FAL

  PCA-RP·GA

  PCA-RP·GA

  PEA-RP·EA

  PEA-RP·EA.TH-A

  PEAD-RP·EA

  PEAD-RP·EA.UK PEAD-RP·EA

  1

  .UK

  PEAD-RP·GA

  PEAD-RP·GA.UK

  <Outdoor unit>

  [Model names]

  [Service Ref.]

  No. OCT04

  REVISED EDITION-B

  SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

  PUHZ-RP·VHA

  PUHZ-RP1.6/ 2/ 2.5/ 3/ 4/ 5/ 6VHA

  PUHZ-RP2.5/ 3/ 4/ 5/ 6VHA

  1

  PUHZ-RP3/ 4/ 5/ 6VHA-A

  PUHZ-RP3/ 4/ 5/ 6VHA

  1

  -A

  PUHZ-RP·YHA

  PUHZ-RP4/ 5/ 6/ 8/ 10YHA

  PUHZ-RP8/ 10YHA-A

  Revision:
  • PUHZ-RP•YHA and

  PUHZ-RP•YHA-A are added in
  REVISED EDITION-B.

  • Some descriptions have been modified.

  • Please void OCT04 REVISED EDITION-A.

  December 2005

  OCT04B-1.qxp 05.11.29 11:23 AM Page 1

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  Summary

  Page 2 - PAIRING TABLE OF THE INDOOR AND OUTDOOR UNITS

  2 1 PAIRING TABLE OF THE INDOOR AND OUTDOOR UNITS Service Manual No. OC294D OC317 Outdoor unit / Heat pump type PUHZ-RP PEAD-RP · EA.UK PEAD-RP · EA 1 .UK PLA-RP · AA.UK PLA-RP · AA 1 .UK PEAD-RP · GA.UK PLA-RP · AA PLA-RP · AA 1 MEE04K225 MEE03K219 OC293REVISED EDITION-B OC297REVISED EDITION-E PKA-...

  Page 3 - SPECIFICATIONS FOR ELECTRICAL WORK; Wiring; Install an earth longer and thicker than other cables.; Synchronized twin and triple system Electrical wiring; • Synchronized twin; ww; Refer to ELECTRICAL WIRING of

  3 SPECIFICATIONS FOR ELECTRICAL WORK 2 2-1. FIELD ELECTRICAL WIRING(power wiring specifications)PUHZ-RP•VHA PUHZ-RP4, 5, 6YHA PUHZ-RP•VHA-A Outdoor unit power supply *1 *2 *3 *4 *4 *4 *4 Outdoor unit power supply earth Indoor unit - Outdoor unit Indoor unit - Outdoor unit earth Remote controller - I...

  Page 4 - Check items; current may cause it to malfunction.

  4 PUHZ-RP8, 10YHAPUHZ-RP8, 10YHA-A Outdoor unit Power supply Phase Frequency & Voltage Outdoor unit (A) Wire No. 32 4 32 4 Models (Outdoor unit) 3N~(3ph 4wires) 50Hz, 380-400-415V Outdoor unit Power supply Input capacity Main switch/Breaker Indoor unit/Outdoor unit connecting Wire No. o size ( e...

  Page 9 - shield wire for electric wires.

  9 2-3-3. Regulations in address settings In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above sec-tion. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address. w Refrigerant addres...

  Page 10 - WIRING DIAGRAM; MF

  10 3 WIRING DIAGRAM [Servicing] Fasten terminal of the terminal board "TB4" equips lock system.To remove the fastened terminal, pull it while pressing the protruding portion (locking lever) ofthe terminal. The fastened terminal protruding portion should face upward. NOTES: 1.Since the outdoo...

  Page 11 - TO OUTDOOR UNIT; MODELS

  11 PKA-RP1.6GAL PKA-RP2GAL 3.While pointing the remote controller toward the unit's receiver, press the h button. · The check code will be indicated by the number of times that the buzzer sounds from the receiver section and the number of blinks of the operation lamp.4.While pointing the remote cont...

  Page 13 - INDOOR UNIT

  13 PCA-RP2GA PCA-RP2.5GA PCA-RP3GAPCA-RP4GA PCA-RP5GA PCA-RP6GA Service board 2 3 4 ON 1 OFF 2 3 4 ON 1 OFF 2 3 4 ON 1 OFF 2 3 4 ON 1 OFF 2 3 4 ON 1 OFF OFF ON 4 3 2 1 Manufacture <For service board> <For manufacture> OFF ON 5 4 3 2 1 J21 J21 J21 J21 J21 J21 J22 J22 J22 J22 J22 J22 J23 J...

  Page 21 - REFRIGERANT SYSTEM DIAGRAM; Overload operation; near the ISO T1 standard operating conditions.

  21 REFRIGERANT SYSTEM DIAGRAM 4 Measurement item COOL: 2.3 ~ 3.0 HEAT: 2.0 ~ 3.2 0.55 ~ 1.0 50 ~ 100 -2 ~ +18 COOL: 27 : HEAT: 20 : COOL: 8 ~ 20 HEAT: 30 ~ 50 COOL: 35 HEAT: 7 COOL: 40 ~ 50 HEAT: 0 ~ 5 Measurement method, remarks Connect the pressure gauge to the high-pressure check valve. Connect t...

  Page 22 - Heat exchanger

  22 4-2. REFRIGERANT SYSTEM DIAGRAM Pipe temperature thermistor/liquid (TH2) Distributorwith strainer#50 Condenser/evaporator temperature thermistor(TH5) Room temperature thermistor (TH1) Refrigerant flow in cooling Refrigerant flow in heating Strainer#50 Strainer #50 Heat exchanger Refrigerant GAS p...

  Page 26 - -3. APPLICABLE EXTENSION PIPE FOR EACH MODEL; Use refrigerant R410A. Use charge hose exclusive for R410A.; Liquid pipe dia Chargeless

  26 4-3. APPLICABLE EXTENSION PIPE FOR EACH MODEL PUHZ-RP•VHA(-A), PUHZ-RP4~6YHA The height difference between indoor and outdoor unit should be kept within 30 m for all models.4-3-1. 1:1 system (a) Maximum pipe length (b) Adjusting the amount of refrigerant• Additional refrigerant charge is not nece...

  Page 27 -

  27 5 10 15 20 25 30 35 40 45 50 55 80 Capacity ratio [%] Corrected pipe length 85 90 95 100 Heating RP1.6, RP2 Cooling RP1.6 Cooling RP2 100 95 90 85 80 75 70 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 Note: The permitted pipe length is up to 55m for RP1.6, 2, 2.5, 3 model. Cooling RP3 model Coo...

  Page 28 - Corrected pipe length; Cooling RP3

  28 5 10 15 20 25 30 35 40 45 50 55 80 Capacity ratio [%] Corrected pipe length 85 90 95 100 Heating RP2.5, RP3 Cooling RP3 Cooling RP2.5 4 4 When gas pipe is one size larger than standard size for PUHZ-RP4, 5 and 6. 1 Capacity can be obtained by referring to capacity curves of standard size. 3 3 Cap...

  Page 30 - Synchronized twin; m or less; Synchronized triple

  30 Indoor unit Indoor unit Outdoor unit Branch pipe B Branch pipe C Main pipe A Optional distributing pipeMulti-distributor 30 m or less 1 m or less Synchronized twin Indoor unit Indoor unit Outdoor unit Branch pipe B Branch pipe D Indoor unit Branch pipe C Main pipe A Optional distributing pipeMult...

  Page 31 - Note : The maximum pipe length is 80m in case of new piping.

  31 4-4. APPLICABLE EXTENSION PIPE FOR EACH MODEL PUHZ-RP8, 10YHA(-A) 4-4-1. 1:1 system(1) Pipe length 70m [30m] SW SW : When the outdoor unit is located lower than the indoor unit, set DIP SW8-1 on the outdoorunit controller board to ON. RP8 RP10 Liquid pipe (mm) OD Thick- ness OD Thick- ness gas pi...

  Page 34 - Pipe diameter and thickness;
  Lowered cooling capacity by the smaller gas pipe diameter; Capacity

  34 OD (mm) Pipe diameter and thickness [ 6.35 0.8 Be sure to use hard (tempered) one for pipe over [ 22.2.(Do not use soft (annealed) one.) 0.8 0.8 1.0 1.0 1.0 1.0 1.0 [ 9.52 [ 12.7 [ 15.88 [ 19.05 [ 22.2 [ 25.4 [ 28.58 1.1 [ 31.75 Thickness (mm) 1 4 Number of pipe bends Within 15 points8 points bet...

  Page 35 - When length exceeds 70 m

  35 A+B+C+D Amount of additional refrigerant charge (kg) 30 m and less 31-40 m and less 41-50 m and less 51-60 m and less 61-70 m and less 71-80 m and less 0.9 kg 1.8 kg 2.7 kg 3.6 kg 1.2 kg 2.4 kg 3.6 kg 4.8 kg Outdoor unit permittedpipe length RP8 RP10 80m or less At time of shipping (kg) 10.5 10.5...

  Page 36 - HOW TO CHECK THE PARTS; Drain sensor; Thermistor R

  36 5 HOW TO CHECK THE PARTS Parts name Check points Disconnect the connector then measure the resistance using a tester.(Surrounding temperature 10 : ~30 : ) Drain sensor (Refer to below for a detail.) (Refer to below for a detail.) Room temperaturethermistor (TH1) Pipe temperature thermistor/ ligui...

  Page 38 - Vane motor

  38 PCA-RP2GA PCA-RP2.5GA PCA-RP3GA PCA-RP4GA PCA-RP5GA PCA-RP6GA 1 1 2 2 3 3 Red White Black Relay connector Protector 1 2 Gray Gray 4 5 2 3 6 1 Orange Red Pink Yellow Brown Blue M 4 2 5 3 1 Pink Orange Red Yellow Blue M OFF : 130 i 5 : ON : 80 i 20 : Parts name Check points Measure the resistance b...

  Page 44 - HOW TO CHECK THE COMPONENTS; Low temperature thermistors

  44 HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3, TH32)• Thermistor <Outdoor 2-phase pipe> (TH6)• Thermistor <Outdoor> (TH7) Thermistor R0 = 15k ' ± 3% B constant = 3480 ± 2% R t =15exp{3480( 273+t – 273 )}...

  Page 45 -

  ; Linear expansion valve

  45 <Output pulse signal and the valve operation> (2) Linear expansion valve operation A B C Open Open Extra tightning (about 200 pulse) Pulse number 500 pulseOpening a valvall the way Close Close V alve position (capacity) Opening a valve : 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8 Closing a valve : 1...

  Page 48 - MICROPROCESSOR CONTROL; arious setting

  48 MICROPROCESSOR CONTROL 6 6-1. SYSTEM CONSTRUCTION (1) System constructionA-control model which just wires the connecting line between the indoor and outdoor unit and supply the power is applicable toany models of standard (1:1), twin and triple. (Refer to 2 Start-up system.) Standard 1:1 Synchron...

  Page 54 - INDOOR UNIT CONTROL; • Liquid pipe temperature

  54 INDOOR UNIT CONTROL 7 7-1. COOL OPERATION Control modes Control details 1-1. Thermoregulating function (Function to prevent restarting for 3 minutes) • Room temperature ] desired temperature +1 : ···Compressor ON • Room temperature [ desired temperature ···Compressor OFF Crankcase heater: OFF whe...

  Page 61 - A Bc

  61 Available Timer-Interlocked Operation Modes 1. AUTO START/STOP:Allows both start and shutdown to be interlocked with the timer. 2. AUTO START: Allows automatic start in response to the timer setting and shutdown to be proceeded by manually pressing the ON/OFF but-ton. 3. AUTO STOP: Allows the sta...

  Page 62 - OUTDOOR UNIT CONTROL; Continued to the next page.

  62 OUTDOOR UNIT CONTROL 8 8-1. COOL OPERATION 1. Compressor Control modes Remarks Control details 1-2. Normal control Compressor operating frequency is controlled according to the difference between intake temperature and set temperature in order to let the intake temperature be the same as the set ...

  Page 63 - From the previous page.

  63 1. Compressor Control modes Remarks Control details 1-6. Discharge temperature over-rise prevention control Frequency controls such as Hz-down and no more Hz-up will be conducted according to the discharge temperature (TH4).Temperature restriction: No more Hz-up ··· When TH4 detects 105 : or more...

  Page 65 - Opening pulse range (Lower limit to upper limit)

  65 4. LEV(B) For RP1.6~6 Control modes Remarks Control details 4-1. Normal control LEV opening pulse will be controlled according to the change of compressor operating frequency and regulated every minute to adjust the discharge temperature to let the intake super heat temperature be 0 : to 5 : . • ...

  Page 79 - Normal air

  79 8-8. REPLACEMENT OPERATION (RP4 to 6 Only) 1. Start and end of replacement operation Control modes Remarks Control details 1-1. Requirements for starting Replacement operation will start when SW8-2 on the outdoor controller board is turned on while units are being stopped. 1-2. Requirements for e...

  Page 82 - DIP SWITCH FUNCTION; type A

  82 DIP SWITCH FUNCTION 9 9-1. INDOOR UNIT DIP switch and jumper connector functions.Each function is controlled by the jumper connector in the control p.c.board. Below table shows that the function setting by thejumper connector is available or not in the control p.c.board of applicable units. Also ...

  Page 84 - Fixing method of the compressor operating frequency

  84 9-2-2. Function of connectors and jumpers CN31 Types Connector Function Effective timing Connector SW6 or Jumper ( RP1.6-6VHA) SW (RP4-6YHA) SW6SW10 SW6-1 (J1) SW6-2 (J2) SW6-3 (J3) SW6-4 (J4) SW6-5 (J5) SW6-6 (J6) 1 Model SW6(JP) 2 3 Start Short Open Action by open/ short operation Model select ...

  Page 85 - CNDM; Max. 10 m including local wiring

  85 <Outdoor unit controller board> Pump down (c) Refrigerant collecting (pump down) Perform the following procedures to collect the refrigerant when relocating or replacing the indoor or outdoor units. 1 Before collecting the refrigerant, first make sure that the all of the SW5 DIP switches fo...

  Page 86 - Function of switches

  86 9-2-3. Optional parts A-control Service Tool [ PAC-SK52ST ] w Use CN33 open. (2) Function of jumpers (1) Function of switches w Use SW3 set to OFF. Type of switches DIP SW SW2 SW3 1 2 3 4 5 6 1 Switch Connector Function Types CN33 Not applicable Connector Function Changing of LED display <Self...

  Page 87 - SW2 setting; Display detail; Operation indicator SW2 : Indicator change of self diagnosis; second; Operation mode display.

  87 <Outdoor unit operation monitor function>[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 control-ling DIP SW2 on ‘A-Cont...

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