Mitsubishi Electric PU-P71YHA User Manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES
.................................
3
2. REFERENCE MANUAL
..................................
4
3. SAFETY PRECAUTION
..................................
5
4. FEATURES
......................................................
8
5. SPECIFICATIONS
...........................................
9
6. DATA
.............................................................
11
7. OUTLINES AND DIMENSIONS
....................
15
8. WIRING DIAGRAM
.......................................
19
9. WIRING SPECIFICATIONS
..........................
23
10. REFRIGERANT SYSTEM DIAGRAM
...............
28
11. TROUBLESHOOTING
...................................
30
12. FUNCTION SETTING
....................................
66
13. DISASSEMBLY PROCEDURE
.....................
73
14. PARTS LIST
..................................................
82
15. RoHS PARTS LIST
.......................................
88
No.OC379
REVISED EDITION-F
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
R410A
April 2012
Outdoor unit
[Model names]
PU-P71VHA PUH-P71VHA
PU-P71YHA PUH-P71YHA
PU-P100VHA PUH-P100VHA
PU-P100YHA PUH-P100YHA
PU-P125YHA PUH-P125YHA
PU-P140YHA PUH-P140YHA
PU(H)-P71VHA(1).UK PU(H)-P71VHA#2.UK
PU(H)-P71YHA
(1).UK PU(H)-P71YHA#2.UK
PU(H)-P100VHA
(1).UK PU(H)-P100VHA#2.UK
PU(H)-P100YHA
(1).UK PU(H)-P100YHA#2.UK
Note:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products
have <G> mark on the spec
nameplate.
• For servicing of RoHS com-
pliant products, refer to the
RoHS Parts List.
Revision:
• PU(H)-P125/140YHAR4.UK
have been added in
REVISED EDITION-F.
• Some descriptions have
been modified.
• Please void OC379
REVISED EDITION-E.
[Service Ref.]
Service Ref. is on page 2.

Mitsubishi Electric PU-P71YHA Specifications

General

Cooling Capacity	7.1 kW
Heating Capacity	8.0 kW
Refrigerant	R410A
Power Supply	220-240 V
Outdoor Noise Level	52 dB(A)

Summary

Technical Changes

Reference Manual

Indoor Unit's Service Manual

Lists service manuals for indoor units.

Technical Data Book

Refers to a technical data book.

Safety Precautions

Always Observe for Safety

General safety instructions before accessing terminals.

Cautions Related to New Refrigerant

Cautions for units utilizing refrigerant R410A.

Features

Specifications

Data

Refilling Refrigerant Charge (R410A: kg)

Refilling refrigerant charge data by piping length.

Compressor Technical Data

Compressor technical data including winding resistance.

Noise Criterion Curves

Noise criterion curves for various models.

Standard Operation Data

Standard operation data for different models.

Outlines and Dimensions

Free Space (Around the Unit)

Required free space around the unit for installation.

Service Space

Dimensions of space needed for service access.

Foundation Bolts

Details on foundation bolts and securing the unit.

Piping-Wiring Directions

Directions for piping and wiring connections.

Wiring Diagram

Wiring Specifications

Field Electrical Wiring (Power Wiring Specifications)

Electrical wiring specifications for power supply.

Separate Indoor Unit/Outdoor Unit Power Supplies

Power supply patterns for separate indoor/outdoor units.

Indoor – Outdoor Connecting Cable

Specifications for indoor-outdoor connecting cables.

M-NET Wiring Method

Method for M-NET wiring and address settings.

Refrigerant System Diagram

Troubleshooting

Troubleshooting (Summary)

Summary of error codes and actions for service.

Check Point Under Test Run

Points to check before performing a test run.

How to Proceed 'Self-Diagnosis'

Procedure for performing self-diagnosis.

Self-Diagnosis Action Table

Action table for self-diagnosis error codes.

Troubleshooting of Problems

Troubleshooting common problems and phenomena.

How to Check the Parts

Guide to checking various parts and their resistance.

How to Check the Components

Checking thermistor resistance values.

Test Point Diagram

Diagram showing test points on the outdoor controller board.

Emergency Operation

Procedure for emergency operation of the unit.

Function of Switches, Connectors and Jumpers

Details on switches, connectors, and jumpers.

Function Setting

Unit Function Setting by the Remote Controller

Setting unit functions using a wired remote controller.

Selecting Functions Using the Wired Remote Controller

Detailed steps for selecting functions via wired remote.

Selecting Functions Using the Wireless Remote Controller (Type C)

Selecting functions using a wireless remote controller.

Function Selection of Remote Controller

Overview of remote controller function selection items.

Disassembly Procedure

Removing the Service Panel and Top Panel

Steps to remove the service and top panels.

Removing the Fan Motor (MF)

Steps to remove the fan motor.

Removing the Electrical Parts Box

Steps to remove the electrical parts box.

Removing Thermistor <Outdoor 2-phase Pipe> (TH6) and <Outdoor Pipe> (TH3)

Steps to remove thermistors TH6 and TH3.

Removing Thermistor <Compressor Surface> (TH4)

Steps to remove thermistor TH4.

Removing the Solenoid Valve Coils and LEV

Steps to remove solenoid valve coils and linear expansion valve.

Removing the High Pressure Switch (63H)

Steps to remove the high pressure switch.

Removing the Motor for Compressor (MC)

Steps to remove the compressor motor.

Removing the Accumulator

Steps to remove the accumulator.

Parts List (non-RoHS compliant)

RoHS Parts List