Mitsubishi Electric ERST20F-VM6E - User Manual

SERVICE MANUAL
Note:
This manual describes
service data of cylinder
unit only.
PARTS CATALOG (OCB814)
CYLINDER UNIT
CYLINDER UNIT
MAIN REMOTE
CONTROLLER
August 2023
No. OCH814
REVISED EDITION-A
[Service Ref.]
CONTENTS
1. REFERENCE MANUAL ···························· 2
2. SAFETY PRECAUTION ··························· 3
3. SPECIFICATIONS ···································· 5
4. PART NAMES AND FUNCTIONS ·········· 10
5. OUTLINES AND DIMENSIONS ·············· 13
6. WIRING DIAGRAM ································· 15
7. FIELD WIRING ········································ 26
8. WATER SYSTEM DIAGRAM ·················· 30
9. CONTROLS ············································ 35
10. TROUBLESHOOTING ···························· 58
11. DISASSEMBLY PROCEDURE ··············· 77
12. SUPPLEMENTARY INFORMATION ····· 100
13. SERVICE AND MAINTENANCE ·········· 101
[Model Name]
Revision:
•
Added model names
and service ref. in
REVISED EDITION-A.
OCH814 is void.
EHPT17X-VM2E
EHPT17X-VM6E
EHPT17X-YM9E
EHPT20X-MEHEW
EHPT20X-TM9E
EHPT20X-YM9E
EHPT30X-YM9EE
EHST17D-VM2E
EHST17D-YM9E
EHST20D-VM2E
EHST20D-VM6E
EHST20D-YM9E
EHST20D-TM9E
EHST30D-MEE
EHST30D-VM6EE
EHST30D-YM9EE
EHST30D-TM9EE
ERPT17X-VM2E
ERPT20X-VM2E
ERPT20X-VM6E
ERPT20X-YM9E
ERPT30X-VM2EE
ERPT30X-VM6EE
ERPT30X-YM9EE
ERST17D-VM2E
ERST17D-VM6E
ERST17D-VM2BE
ERST17D-VM6BE
ERST17D-YM9BE
ERST20D-VM2E
ERST20D-VM6E
ERST20D-YM9E
ERST30D-VM2EE
ERST30D-VM6EE
ERST30D-YM9EE
ERST20C-VM2E
ERST30C-VM2EE
ERST20F-VM2E
ERST20F-VM6E
ERST20F-YM9E
ERST20F-TM9E
ERST30F-VM2EE
ERST30F-VM6EE
ERST30F-YM9EE
ERST30F-TM9EE
EHPT17X-VM2E.UK
EHPT17X-VM6E.UK
EHPT17X-YM9E.UK
EHPT20X-MEHEW.UK
EHPT20X-TM9E.UK
EHPT20X-YM9E.UK
EHPT30X-YM9EE.UK
EHST17D-VM2E.UK
EHST17D-YM9E.UK
EHST20D-VM2E.UK
EHST20D-VM6E.UK
EHST20D-YM9E.UK
EHST20D-TM9E.UK
EHST30D-MEE.UK
EHST30D-VM6EE.UK
EHST30D-YM9EE.UK
EHST30D-TM9EE.UK
ERPT17X-VM2E.UK
ERPT20X-VM2E.UK
ERPT20X-VM6E.UK
ERPT20X-YM9E.UK
ERPT30X-VM2EE.UK
ERPT30X-VM6EE.UK
ERPT30X-YM9EE.UK
ERST17D-VM2E.UK
ERST17D-VM6E.UK
ERST17D-VM2BE.UK
ERST17D-VM6BE.UK
ERST17D-YM9BE.UK
ERST20D-VM2E.UK
ERST20D-VM6E.UK
ERST20D-YM9E.UK
ERST30D-VM2EE.UK
ERST30D-VM6EE.UK
ERST30D-YM9EE.UK
ERST20C-VM2E.UK
ERST30C-VM2EE.UK
ERST20F-VM2E.UK
ERST20F-VM6E.UK
ERST20F-YM9E.UK
ERST20F-TM9E.UK
ERST30F-VM2EE.UK
ERST30F-VM6EE.UK
ERST30F-YM9EE.UK
ERST30F-TM9EE.UK

Summary

Safety Precautions

Specifications Overview

Wiring Diagrams Explained

DIP Switch Functions

Details the functions of DIP switches for various operational settings.

Field Wiring and Electrical Connections

Electrical Connection Procedures

System Controls and Operation

Main Remote Controller Operation

Explains the functions and operation of the main remote controller for system settings.

Troubleshooting Guide

Troubleshooting Summary

Summarizes self-diagnosis based on check codes and inferior phenomena.

Malfunction Diagnosis via Remote Controller

Explains how to diagnose malfunctions using check codes displayed on the remote controller.

Self-Diagnosis and Action Steps

Provides a table detailing check codes, possible causes, and diagnostic actions for system faults.

Troubleshooting Inferior Phenomena

Lists common faults not indicated by check codes and their solutions.

Disassembly and Component Removal

Electrical Parts Removal

Plate Heat Exchanger (Refrigerant-Water) Removal

Service and Maintenance Procedures

Regular Parts Replacement Schedule

Mitsubishi Electric ERST20F-VM6E Specifications