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Mitsubishi Electric Mr.Slim PUH-P71VGAA User Manual

Mitsubishi Electric Mr.Slim PUH-P71VGAA
98 pages
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SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
CONTENTS
1. REFERENCE MANUAL··································3
2. SAFETY PRECAUTION··································4
3. PART NAMES AND FUNCTIONS ··················6
4. SPECIFICATIONS···········································7
5. DATA ·····························································11
6. OUTLINES AND DIMENSIONS····················18
7. WIRING DIAGRAM·······································22
8. WIRING SPECIFICATIONS ··························24
9.
REFRIGERANT SYSTEM DIAGRAM
··············28
10. TROUBLESHOOTING ··································30
11. FUNCTION SETTING ···································65
12. DISASSEMBLY PROCEDURE·····················71
13. PARTS LIST··················································75
Outdoor unit
[model names]
PUH-P25VGAA
PUH-P35VGAA PU-P35VGAA
PUH-P35YGAA PU-P35YGAA
PUH-P50VGAA PU-P50VGAA
PUH-P50YGAA PU-P50YGAA
PUH-P60VGAA PU-P60VGAA
PUH-P60YGAA PU-P60YGAA
PUH-P71VGAA PU-P71VGAA
PUH-P71YGAA PU-P71YGAA
PUH-P100VGAA PU-P100VGAA
PUH-P100YGAA PU-P100YGAA
PUH-P125YGAA PU-P125YGAA
PUH-P140YGAA PU-P140YGAA
No.OC336
R407C
[Service Ref.]
Service Ref. is on page 2.
August 2005
• This manual describes only
service data of the outdoor
units.
OC336--1.qxp 05.8.29 7:18 PM Page 1

Table of Contents

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Mitsubishi Electric Mr.Slim PUH-P71VGAA Specifications

General IconGeneral
SeriesMr. Slim
Cooling Capacity7.1 kW
Heating Capacity8.0 kW
Seasonal Energy Efficiency Ratio (SEER)6.1
Power Supply220-240V, 50Hz
RefrigerantR410A
Outdoor Unit Noise Level52 dB(A)
Indoor Unit Weight16 kg
TypeSplit System

Summary

1 REFERENCE MANUAL

1-1. INDOOR UNIT'S SERVICE MANUAL

Lists service manuals for indoor units.

1-2. TECHNICAL DATA BOOK

References a specific technical data book.

2 SAFETY PRECAUTION

CAUTIONS RELATED TO NEW REFRIGERANT

Precautions for using the new R407C refrigerant.

[1] Cautions for service

General safety guidelines for service procedures.

[2] Refrigerant recharging

Guidelines for recharging refrigerant safely.

[3] Service tools

Lists necessary service tools for refrigerant handling.

3 PART NAMES AND FUNCTIONS

CHARGELESS SYSTEM

Explanation of the pre-charged refrigerant system.

4 SPECIFICATIONS

4-1. HEAT PUMP

Technical specifications for heat pump models.

4-2. COOLING ONLY TYPE

Technical specifications for cooling-only models.

5 DATA

5-1. REFILLING REFRIGERANT CHARGE (R407C : kg)

Refrigerant charge quantities by model and piping length.

5-2. COMPRESSOR TECHNICAL DATA

Technical data for compressor specifications.

5-3. NOISE CRITERION CURVES

5-4. STANDARD OPERATION DATA

Heat pump type

Standard operational data for heat pump models.

6 OUTLINES AND DIMENSIONS

1 FREE SPACE (Around the Unit)

Specifies required clearance around the outdoor unit.

2 SERVICE SPACE

Defines necessary space for servicing the unit.

3 FOUNDATION BOLTS

Details on securing the unit with foundation bolts.

4 PIPING-WIRING DIRECTIONS

Information on piping and wiring connection directions.

7 WIRING DIAGRAM

8 WIRING SPECIFICATIONS

8-1. FIELD ELECTRICAL WIRING (power wiring specifications)

Specifications for electrical wiring of outdoor units.

1:1 system

Wiring specifications for a single indoor/outdoor unit system.

Synchronized twin and triple system Electrical wiring

Wiring specifications for multi-unit synchronized systems.

8-2. INDOOR-OUTDOOR CONNECTING CABLE

Details on indoor-outdoor connecting cable specifications.

8-3. M-NET WIRING METHOD

Method for wiring the M-NET communication system.

9 REFRIGERANT SYSTEM DIAGRAM

10 TROUBLESHOOTING

10-1. TROUBLESHOOTING

General troubleshooting guide for system issues.

10-2. CHECK POINT UNDER TEST RUN

Points to check before and during test runs.

Indoor control p.c.board LED

Explanation of LED indicators on the indoor control board.

10-3. HOW TO PRECEED "SELF-DIAGNOSIS"

Procedure for accessing and interpreting self-diagnosis.

10-3-3. Remote Controller Diagnosis

Steps to diagnose and troubleshoot the remote controller.

10-3-4. Malfunction-diagnosis method by wireless remote controller

Method for diagnosing malfunctions using a wireless remote.

[Output pattern A] Errors detected by indoor unit

List of errors detected by the indoor unit.

10-4. SELF-DIAGNOSIS ACTION TABLE

Actions to take based on detected error codes.

<M-NET communication error>

Troubleshooting specific M-NET communication errors.

10-5. TROUBLESHOOTING BY INFERIOR PHENOMENA

Troubleshooting based on observed operational phenomena.

11 FUNCTION SETTING

11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

Setting unit functions via the remote controller.

11-1. Selecting functions using the wired remote controller

Procedure for setting functions with a wired remote.

11-1-2. Selecting functions using the wireless remote controller (Type C)

Procedure for setting functions with a wireless remote.

11-2. FUNCTION SELECTION OF REMOTE CONTROLLER

Function selection options for the remote controller.

[4] -1. CHANGE LANGUAGE setting

Setting the display language for the remote controller.

[4] -2. Function limit

Setting operation limits for remote controller functions.

[4] -3. Mode selection setting

Setting remote controller modes (main/sub, clock, timer).

[4] -4. Display change setting

Changing display settings like temperature unit or air temp.

12 DISASSEMBLY PROCEDURE

1. Removing the Service panel and Top panel

Steps to remove the service and top panels.

2. Removing the Fan and Fan motor

Steps to remove the fan and motor assembly.

3. Removing the Electrical box

Steps to remove the electrical box.

5. Removing the bypass valve solenoid coil (SV)

Steps to remove the bypass valve solenoid coil.

6. Removing the bypass valve

Steps to remove the bypass valve.

7. Removing the 4-way valve solenoid coil (21S4)

Steps to remove the 4-way valve solenoid coil.

8. Removing the 4-way valve

Steps to remove the 4-way valve.

9. Removing the high pressure switch

Steps to remove the high pressure switch.

10. Removing the low pressure switch

Steps to remove the low pressure switch.

11. Removing the linear expansion valve

Steps to remove the linear expansion valve.

12. Removing the Bell mouth

Steps to remove the bell mouth.

13. Removing the compressor

Steps to remove the compressor.

14. Removing the accumulator.

Steps to remove the accumulator.

13 PARTS LIST

STRUCTURAL PARTS

List of structural parts for the outdoor unit.

FUNCTIONAL PARTS

List of functional electrical and mechanical parts.

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