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Mitsubishi Electric ERST30F-VM6EE.UK User Manual

Mitsubishi Electric ERST30F-VM6EE.UK
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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
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Mitsubishi Electric ERST30F-VM6EE.UK Specifications

General IconGeneral
BrandMitsubishi Electric
ModelERST30F-VM6EE.UK
CategoryAir Conditioner
LanguageEnglish

Summary

Service Manual

2 Safety Precautions

General Safety Guidelines

Covers mechanical, electrical, and general safety advice.

3 Specifications

Model Specifications Overview

Details technical specifications for various models.

5 Outlines and Dimensions

Technical Drawings and Dimensions

Provides dimensional drawings and connection types for models.

6 Wiring Diagrams

Model-Specific Wiring Diagrams

Presents wiring diagrams for different model series.

7 Field Wiring

Electrical Connection Procedures

Details electrical connection methods for cylinder units.

8 Water System Diagrams

Model-Specific Water Circuits

Illustrates water system layouts for various model configurations.

9 Controls

Main Remote Controller Overview

Introduces the main remote controller interface and icons.

Service Menu Functions

Lists functions available in the service menu for installers.

DHW and Legionella Prevention Modes

Describes DHW and Legionella prevention mode settings.

Service Menu Operations

Describes manual operation and function settings within the service menu.

Indoor Unit Only Operation

Emergency Operation Modes

Explains how to activate and deactivate emergency operation modes.

10 Troubleshooting

Troubleshooting Overview and Test Run

Introduces troubleshooting steps and test run procedures.

Malfunction Diagnosis via Remote Controller

Describes how to diagnose malfunctions using the main remote controller.

Self-Diagnosis and Actions for Overheat Protections

Details actions for circulation and tank water temperature overheat errors.

Thermistor Failures and Freeze Protection

Covers thermistor failures and circulation water freeze protection.

Heating Operation and Flow Rate Errors

Addresses heating operation errors and flow rate detection issues.

Boiler and System Faults

Lists possible causes and solutions for boiler and system faults.

Communication and Communication Failure Errors

Details errors related to communication failures between units.

Communication Failure and Outdoor Unit Errors

Covers communication issues and outdoor unit specific errors.

Main Remote Controller Display and FTC Errors

Addresses blank displays, "Please Wait" messages, and FTC errors.

FTC and SD Card Errors, Water Supply Issues

Details FTC, SD card errors, and hot/cold water supply problems.

Water Heating, Leakage, and Temperature Issues

Covers water heating time, leakage, and temperature attainment problems.

2-Zone Control, Outdoor Unit, and Pressure Relief Valve Issues

Addresses 2-zone control, outdoor unit, and pressure relief valve problems.

Noise, Pump Issues, and Cooling System Errors

Covers noise, pump issues, cooling system performance, and freeze protection errors.

10-7 Test Point Diagram

FTC Controller Board Layout

Illustrates test points and connector locations on the FTC controller board.

11 Disassembly Procedure

13 Service and Maintenance

13-2 Annual Maintenance (Cylinder Unit and Hydrobox)

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