Table of Contents
Advertisement
HYDROBOX
SERVICE MANUAL
[Model Name]
EHSD-MED
EHSD-VM2D
EHSD-VM6D
EHSD-YM9D
EHSD-YM9ED
EHSD-TM9D
ERSD-MED
ERSD-VM2D
ERSD-VM6D
ERSD-YM9D
[Service Ref.]
Refer to page 2.
HYDROBOX
EHSC-MED
EHSC-VM2D
EHSC-VM6D
EHSC-YM9D
EHSC-YM9ED
EHSC-TM9D
ERSC-MED
ERSC-VM2D
ERSC-VM6D
ERSC-YM9D
EHSE-MED
EHSE-YM9ED
ERSE-MED
ERSE-YM9ED
EHPX-VM2D
EHPX-VM6D
EHPX-YM9D
EHPX-MED
EHPX-YM9ED
ERPX-MD
ERPX-VM2D
ERPX-VM6D
ERPX-YM9D
CONTENTS
1. REFERENCE MANUAL ................................... 3
2. SAFETY PRECAUTION ................................... 4
3. SPECIFICATIONS ............................................ 6
4. PART NAMES AND FUNCTIONS .................. 8
5. OUTLINES AND DIMENSIONS ....................... 9
6. WIRING DIAGRAM ......................................... 11
7. FIELD WIRING ............................................... 17
8. WATER SYSTEM DIAGRAM ......................... 19
9. CONTROLS ................................................... 22
10. TROUBLESHOOTING ................................... 43
11. DISASSEMBLY PROCEDURE ...................... 60
12. SUPPLEMENTARY INFORMATION ............. 80
13. SERVICE AND MAINTENANCE ................... 81
PARTS CATALOG (OCB712)
October 2020
No. OCH712
REVISED EDITION-C
Revision:
• ERSD-VM6D, ERSD-
YM9D, ERSC-VM6D,
ERSC-YM9D and
ERPX series have been
added.
• Some descriptions
have been modified in
REVISED EDITION-C.
OCH712B is void.
Note:
• This manual describes
service data of
Hydrobox only.
Advertisement
Table of Contents
Related Manuals for Mitsubishi Electric ERSE-MED
Summarization of Contents
2 SAFETY PRECAUTION
General Warnings and Cautions
Covers essential safety precautions for preventing injuries, death, and unit damage.
Symbols and Service Cautions
Explains warning symbols and provides crucial cautions for service personnel.
Service Procedures and Tools
Details on service procedures, refrigerant handling, and necessary service tools.
3 SPECIFICATIONS
Model Specifications Table
Detailed technical specifications including dimensions, weight, water volume, electrical data, and sound levels.
4 PART NAMES AND FUNCTIONS
Component Identification and Features
Illustrates and lists key components of the hydrobox system and their functions.
5 OUTLINES AND DIMENSIONS
Technical Drawings and Pipe Descriptions
Provides technical drawings of the unit with detailed pipe descriptions and connection sizes.
6 WIRING DIAGRAM
Electrical Connections and Signal Inputs/Outputs
Details electrical connection diagrams, signal inputs, and output functions for system operation.
DIP Switch Functions
Explains the function and default settings for each DIP switch on the circuit board.
7 FIELD WIRING
1-Phase and 3-Phase Electrical Connections
Illustrates field wiring diagrams for 1-phase and 3-phase power supply options.
8 WATER SYSTEM DIAGRAM
Hydrobox and Local System Diagrams
Diagrams illustrating water system configurations for packaged and split model systems.
9 CONTROLS
Main Remote Controller Overview
Details the parts of the main remote controller and explains the icons displayed on the screen.
Main Settings Menu Navigation
Explains how to access main settings, different access levels, and general navigation of the menu.
Controller Menu Tree Structure
Detailed menu tree showing navigation paths for DHW, heating/cooling, scheduling, and holiday modes.
Service Menu Access and Functions
Covers service menu access, manual operation, and function settings for installers.
Auxiliary, Heat Source, and Pump Speed Settings
Configuration for auxiliary parts, heat source selection, and pump speed adjustments.
Operation Settings and Energy Monitoring
Explains heating operation, freeze protection, and energy monitoring settings.
External Inputs, Running Info, and Thermistors
Covers external input settings, running information, and thermistor readings.
Error History and Password Management
Guides for viewing error history, managing passwords, and accessing service menus.
Manual Reset and SD Card Operations
Procedures for manual reset of settings and using SD cards for data management.
Indoor Unit Operation Modes
Details on activating and deactivating indoor unit operation using heater, boiler, or emergency modes.
10 TROUBLESHOOTING
Self Diagnosis and Test Run Procedures
Guides for interpreting self-diagnosis codes and performing test runs for troubleshooting.
Error Code Analysis (L3-P2)
Troubleshooting steps for various error codes related to temperature, pressure, flow, and thermistors.
Error Code Analysis (LA-E6)
Diagnosing communication failures and errors related to anti-freeze protection and unit communication.
Troubleshooting Inferior Phenomena
Guides for resolving common issues like blank displays, communication errors, and system performance problems.
Component Checks and Functions
Water Circulation Pump Performance
Provides performance curves for water circulation pumps under different series and speeds.
Electrical Component Testing
Details testing procedures for booster heaters, heaters, and electrical circuit breakers.
Sensor and Thermistor Diagnostics
Instructions for testing flow sensors, pressure sensors, and thermistors, including characteristic data.
11 DISASSEMBLY PROCEDURE
Front Panel and Controller Removal
Step-by-step guide for removing the front panel and the remote controller assembly.
Electrical Parts and Control Box Removal
Procedures for removing electrical parts like the control box, terminal blocks, and circuit breakers.
Pump, Flow Sensor, and Booster Heater Removal
Guides for removing the water pump, flow sensor, and booster heater.
Plate Heat Exchanger and Pressure Sensor Removal
Procedures for removing the plate heat exchanger and the pressure sensor.
Strainer, Manometer, and Air Vent Removal
Instructions for removing the strainer, manometer, and pressure relief valves and air vents.
Expansion Vessel and Thermistor Removal
Procedures for removing the expansion vessel and various thermistors.
Drain Pan and Related Parts Removal
Instructions for removing the drain pan, cover plates, and base assembly.
Quick Joint Handling and Part Replacement Notes
Guides for handling quick joints, O-rings, and notes on part replacement with loctite and torques.
12 SUPPLEMENTARY INFORMATION
Boiler Back-up and Multi-Unit Control
Details on boiler back-up operation and configuring multiple outdoor unit control systems.
13 SERVICE AND MAINTENANCE
Annual Maintenance Procedures
Guidelines for annual servicing, including parts replacement, inspection, and commissioning records.
Engineers Forms and Settings Records
Detailed parameter settings for various functions, including notes on defaults and system configurations.
Annual Maintenance Log Book
A template for recording annual maintenance activities for the hydrobox and outdoor unit.
Need help?
Do you have a question about the ERSE-MED and is the answer not in the manual?
Questions and answers