Mitsubishi PUY-A18NHA6 User Manual

SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL ································· 2
2. SAFETY PRECAUTION ································· 2
3. FEATURES ····················································· 6
4. SPECIFICATIONS ·········································· 7
5. DATA ······························································· 9
6. OUTLINES AND DIMENSIONS ··················· 13
7. WIRING DIAGRAM ······································ 16
8. WIRING SPECIFICATIONS ·························· 20
9. REFRIGERANT SYSTEM DIAGRAM ············· 23
10. TROUBLESHOOTING ·································· 26
11. EASY MAINTENANCE FUNCTION·············· 91
12. FUNCTION SETTING ··································· 95
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···105
14. DISASSEMBLY PROCEDURE ··················· 114
R410A
Outdoor unit
[Model Name]
PUZ-A18NHA6
PUZ-A24NHA6
PUZ-A30NHA6
PUZ-A36NHA6
PUZ-A42NHA6
PUZ-A18NHA6-BS
PUZ-A24NHA6-BS
PUZ-A30NHA6-BS
PUZ-A36NHA6-BS
PUZ-A42NHA6-BS
PUY-A12NHA6
PUY-A18NHA6
PUY-A24NHA6
PUY-A30NHA6
PUY-A36NHA6
PUY-A42NHA6
PUY-A12NHA6-BS
PUY-A18NHA6-BS
PUY-A24NHA6-BS
PUY-A30NHA6-BS
PUY-A36NHA6-BS
PUY-A42NHA6-BS
[Service Ref.]
PUZ-A18NHA6
PUZ-A24NHA6
PUZ-A30NHA6
PUZ-A36NHA6
PUZ-A42NHA6
PUZ-A18NHA6-BS
PUZ-A24NHA6-BS
PUZ-A30NHA6-BS
PUZ-A36NHA6-BS
PUZ-A42NHA6-BS
PUY-A12NHA6
PUY-A18NHA6
PUY-A24NHA6
PUY-A30NHA6
PUY-A36NHA6
PUY-A42NHA6
PUY-A12NHA6-BS
PUY-A18NHA6-BS
PUY-A24NHA6-BS
PUY-A30NHA6-BS
PUY-A36NHA6-BS
PUY-A42NHA6-BS
PUZ-A24/30/36NHA6
PUY-A24/30/36NHA6
PARTS CATALOG (OCB577)
Notes:
•Thismanualdescribesservice
dataoftheoutdoorunitsonly.
• RoHScompliantproductshave
<G>markonthespecname
plate.
SPLIT-TYPE,HEATPUMPAIRCONDITIONERS
SPLIT-TYPE,AIRCONDITIONERS
August 2015
No. OCH577
REVISED EDITION-A
•PleasevoidOCH577.
Revision:
•Updatedthetablein
 "1.REFERENCEMANUAL"
in
REVISEDEDITION-A.
•Somedescriptionshavebeen
modified.

Mitsubishi PUY-A18NHA6 Specifications

General

Brand	Mitsubishi
Model	PUY-A18NHA6
Category	Air Conditioner
Language	English

Summary

Reference Manual

Safety Precautions

Essential safety guidelines for handling and repair.

Safety Precautions

Refrigerant Handling Cautions

Guidelines for using R410A refrigerant, including piping, oil, and charging procedures.

Data

Refrigerant and Compressor Data

Technical specifications for refrigerant charge and compressor performance.

Wiring Diagram

Wiring Specifications

Refrigerant System Diagram

Troubleshooting

General Troubleshooting and Test Run Checks

Guidelines for diagnosing and addressing operational issues and pre-test run checks.

Error Diagnosis and History

Procedures for checking error history and performing self-diagnosis.

Unit Operation Abnormalities

Detailed descriptions of abnormalities occurring during unit operation and their causes.

Electrical System Errors

Diagnosing and resolving electrical system errors such as over/undervoltage and sensor faults.

Communication Errors

Diagnosing and resolving communication errors between units and controllers.

Remote Controller Operation Issues

Troubleshooting common problems with the remote controller's display and operation.

Customer Call Troubleshooting

Common customer inquiries about unit operation and remote controller issues.

Disassembly Procedure

Removing Panels

Removing Fan Motor and Electrical Parts Box

Removing Thermistors

Removing Valves and Valve Coils

Removing Compressor and Accumulator