Mitsubishi Electric ERSE-YM9EC User Manual

SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL
...................................
2
2. SAFETY PRECAUTION
...................................
3
3. SPECIFICATIONS
............................................
6
4. PARTS NAMES AND FUNCTIONS
................
8
5. OUTLINES AND DIMENSIONS
.......................
9
6. WIRING DIAGRAM
.........................................
11
7. FIELD WIRING
...............................................
16
8. WATER SYSTEM DIAGRAM
.........................
18
9. CONTROLS
...................................................
21
10. TROUBLESHOOTING
...................................
41
11. DISASSEMBLY PROCEDURE
......................
57
12. SUPPLEMENTARY INFORMATION
.............
72
13. SERVICE AND MAINTENANCE
...................
73
Notes:
• This manual describes
service data of Hydrobox
only.
• RoHS compliant products
have <G> mark on the
spec name plate.
R410A
MAIN REMOTE
CONTROLLER
PARTS CATALOG (OCB590)
HYDROBOX
[Model Name]
EHSE-YM9EC
EHSE-MEC
ERSE-YM9EC
ERSE-MEC
[Service Ref.]
EHSE-YM9EC.UK
EHSE-YM9ECR1.UK
EHSE-MEC.UK
EHSE-MECR1.UK
ERSE-YM9EC.UK
ERSE-YM9ECR1.UK
ERSE-MEC.UK
ERSE-MECR1.UK
August 2015
HYDROBOX
No. OCH590
REVISED EDITION-B
Revision:
•Added
EHSE-YM9ECR1.UK,
EHSE-MECR1.UK,
ERSE-YM9ECR1.UK and
ERSE-MECR1.UK
in
REVISED EDITION-B.
•Somedescriptionshave
been modified.
•PleasevoidOCH590
REVISEDEDITION-A.

Mitsubishi Electric ERSE-YM9EC Specifications

General

Brand	Mitsubishi Electric
Model	ERSE-YM9EC
Category	Heat Pump
Language	English

Summary

SAFETY PRECAUTION

OUTLINES AND DIMENSIONS

WIRING DIAGRAM

Model-Specific Wiring and DIP Settings

Details wiring diagrams for various models and explains DIP switch configurations.

FIELD WIRING

Power Supply Configurations

CONTROLS

Main Remote Controller Operation and Settings

Service Menu and Diagnostics

Details advanced service functions, error history, and system diagnostics.

TROUBLESHOOTING

Diagnosis Methods and Error Codes

Guides on identifying problems, error codes, and general troubleshooting steps.

Component Checks and Fault Resolution

Provides diagnostic procedures for component failures and common operating issues.

DISASSEMBLY PROCEDURE

Exterior, Electrical, and Control Box Access

SERVICE AND MAINTENANCE