Mitsubishi Electric PUHZ-RP250YHA2 User Manual

SERVICE MANUAL
No.OCH428
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
R410A
November 2007
Outdoor unit
[model names]
PUHZ-RP200YHA2
PUHZ-RP250YHA2
[Service Ref.]
PUHZ-RP200YHA2
PUHZ-RP250YHA2
PUHZ-RP200YHA2
PUHZ-RP250YHA2
Note:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products
have <G> mark on the
spec name plate.
CONTENTS
1. REFERENCE MANUAL ································ 2
2. SAFETY PRECAUTION································ 3
3. FEATURES···················································· 7
4. SPECIFICATIONS ········································· 8
5. DATA······························································ 9
6. OUTLINES AND DIMENSIONS ·················· 12
7. WIRING DIAGRAM ····································· 13
8. WIRING SPECIFICATIONS························· 14
9.
REFRIGERANT SYSTEM DIAGRAM ············ 19
10. TROUBLESHOOTING································· 21
11. FUNCTION SETTING ·································· 73
12. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ········· 80
13. EASY MAINTENANCE FUNCTION··············90
14. DISASSEMBLY PROCEDURE···················· 93
PARTS CATALOG (OCB428)

Mitsubishi Electric PUHZ-RP250YHA2 Specifications

General

Brand	Mitsubishi Electric
Model	PUHZ-RP250YHA2
Category	Air Conditioner
Language	English

Summary

Safety Precautions

Always Observe Safety Precautions

General safety observation before accessing electrical circuits.

Refrigerant Handling Cautions

Cautions for units utilizing refrigerant R410A, including tool usage.

R22 Pipe Reuse Precautions

Precautions and flowchart for reusing existing R22 refrigerant pipes.

Refrigerant Piping Work Cautions

Cautions regarding refrigerant piping work, pipe thickness, and flare dimensions for R410A.

Wiring Specifications

Field Electrical Wiring

Power wiring specifications for outdoor units, including breaker and wire size.

Separate Power Supplies

Indoor-Outdoor Cable

M-NET Wiring Method

Troubleshooting

Troubleshooting Summary

Summary of error codes, symptoms, and actions for troubleshooting.

Test Run Checkpoints

Self-Diagnosis Procedures

Procedures for self-diagnosis during operation and maintenance.

Self-Diagnosis Action Table

Table detailing actions for specific error codes detected during power-on.

Troubleshooting Inferior Phenomena

Troubleshooting common operational phenomena and their causes.

Component Part Checks

Procedures for checking the resistance of key electrical components.

Emergency Operation

Procedure for operating the unit in emergency mode during specific error conditions.

Test Point Diagrams

Switch, Connector, Jumper Functions

Switch Functions

Connector and Switch Functions

Function Setting

Unit Settings via Wired Remote

How to set unit functions using the wired remote controller.

Functions available for Unit Number

Wired Remote Function Selection

Wireless Remote Function Selection

Remote Controller Function Selection

Details on functions configurable via the remote controller.

Monitoring Operation Data

Monitoring Operation Data

Guide to accessing and viewing operation data via the remote controller.

Request Code List

Detail Contents in Request Code

Easy Maintenance Function

Maintenance Mode Operation

How to activate and use the maintenance mode for inspection.

Operation Condition Guide