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Mitsubishi Electric MSH-GE50VB-E1 User Manual

Mitsubishi Electric MSH-GE50VB-E1
36 pages
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CONTENTS
1. TECHNICAL CHANGES ··································· 2
2. PART NAMES AND FUNCTIONS ····················· 2
3. SPECIFICATION ················································ 4
4. NOISE CRITERIA CURVES ······························ 5
5. OUTLINES AND DIMENSIONS ························ 7
6. WIRING DIAGRAM ············································ 9
7. REFRIGERANT SYSTEM DIAGRAM ············· 10
8. SERVICE FUNCTIONS ····································11
9. MICROPROCESSOR CONTROL ··················· 14
10. TROUBLESHOOTING ····································· 22
11. DISASSEMBLY INSTRUCTIONS ···················· 33
MSC-GE20VB -
E1
MSC-GE25VB -
E1
MSC-GE35VB -
E1
MS-GE50VB
-
E1
MSH-GE50VB -
E1
SPLIT-TYPE AIR CONDITIONERS
SERVICE MANUAL
Models
INDOOR UNIT
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Outdoor unit service manual
MU-GA•VB Series (OB386)
MUH-GA•VB Series (OB387)
MUX-A•VB Series (OB384)
MXZ-A•WV Series (OB319)
MU/MUH-GE•VB Series (OBH530)
No. OBH529
REVISED EDITION-A
PARTS CATALOG (OBB529)
Revision A:
Another type of the electronic control P.C.
board (TYPE 2) has been added to the
original one (TYPE 1). They are both com-
patible with MS/MSH-GE50VB-
E1
.
Please void OBH529.
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Mitsubishi Electric MSH-GE50VB-E1 Specifications

General IconGeneral
Cooling Capacity5.0 kW
Heating Capacity5.8 kW
Power Supply220-240V, 50Hz
RefrigerantR410A
Outdoor Unit Dimensions (W x H x D)800 x 550 x 285 mm
Weight (Indoor Unit)10 kg
COP3.60
Operating Temperature (Heating)-15 to 24 °C

Summary

Technical Changes

Technical Changes Details

Details modifications made to the indoor unit models, including P.C. board and fan motor updates.

Part Names and Functions

Part Names and Functions (MSC-GE Series)

Identifies and explains components of MSC-GE20VB, MSC-GE25VB, MSC-GE35VB indoor units.

Accessories List

Lists and quantifies included accessories for different model series.

Part Names and Functions (MS-GE50VB/MSH-GE50VB)

Identifies and explains components of MS-GE50VB and MSH-GE50VB indoor units.

Specifications

Model Specifications

Provides detailed technical specifications for various indoor unit models including electrical data and performance.

Noise Criteria Curves

Noise Criteria Curves (MSC-GE Series)

Displays octave band sound pressure levels for MSC-GE20VB, MSC-GE25VB, MSC-GE35VB at different fan speeds.

Noise Criteria Curves (MS-GE50VB/MSH-GE50VB)

Displays octave band sound pressure levels for MS-GE50VB and MSH-GE50VB at different fan speeds.

Outlines and Dimensions

Outlines and Dimensions (MSC-GE Series)

Shows physical dimensions and installation details for MSC-GE20VB/25VB/35VB indoor units.

Outlines and Dimensions (MS-GE50VB/MSH-GE50VB)

Shows physical dimensions and installation details for MS-GE50VB and MSH-GE50VB indoor units.

Wiring Diagram

Wiring Diagrams

Illustrates electrical connections for MSC-GE series and MS/MSH-GE50VB indoor unit models.

Refrigerant System Diagram

Refrigerant System Diagram

Depicts the refrigerant flow and key components for MSC-GE series and MS/MSH-GE50VB models.

Service Functions

Timer Short Mode

Describes how to shorten timer settings for service purposes by shorting specific pins.

PC Board Modification for Individual Operation

Explains modifying the remote controller PC board for multi-unit operation by soldering jumper wires.

Remote Controller Type Setting

Details setting the remote controller for specific unit types (COOL & HEAT vs. COOL ONLY).

MU & MUX/MUH & MXZ Type Switch Over

Guides on switching between MU/MUX and MUH/MXZ outdoor unit types via internal switch.

Auto Restart Function

Explains the auto restart feature and how to disable it by changing switch settings.

Auto Restart Function (MS-GE50VB/MSH-GE50VB)

Details disabling the auto restart function for MS/MSH-GE50VB models by soldering a jumper wire.

Microprocessor Control

Wireless Remote Controller Overview

Illustrates buttons and functions of wireless remote controllers for different indoor unit models.

Indoor Unit Display Section

Explains the operation indicator lamp on the indoor unit and its states.

Cool Operation Details

Describes the cool operation mode, including fan speed and coil frost prevention.

Dry Operation Details

Details the dry operation mode, set temperature determination, and fan speed control.

Fan Operation Details

Explains fan-only operation for MU/MUX models, with no outdoor unit activity.

Heat Operation Details

Describes heat operation, cold air prevention, and defrosting procedures for MUH models.

I Feel Control Operation

Explains the 'I Feel Control' mode and its temperature determination based on room conditions.

I Feel Control Initial Set Temperature

Details initial set temperature determination based on initial room temperature for I Feel Control.

Temperature Button Functionality

Describes temperature adjustment buttons and fuzzy control logic in 'I Feel Control' mode.

Horizontal Vane Operation

Explains horizontal vane control, positioning, auto mode, and swing modes.

Econo Cool Operation

Describes the energy-saving Econo Cool operation, including set temperature adjustment and vane swing.

Long Mode Operation

Explains the Long mode for indoor fan speed and horizontal vane position.

Vertical Vane Operation

Explains vertical vane control, positioning, swing, and wide modes.

Timer Operation

Details how to set, cancel, and combine timer operations for the air conditioner.

Emergency/Test Operation

Explains how to use the emergency operation switch for testing, servicing, and missing remote controls.

3-Minute Time Delay Operation

Describes the compressor protection time delay function that prevents rapid restarts.

Troubleshooting

Cautions on Troubleshooting

Provides essential safety precautions and checks before starting troubleshooting procedures.

Troubleshooting Procedure

Outlines the general steps for diagnosing unit abnormalities by checking indicator lamps and connections.

Replacing Remote Controller Batteries

Guides on how to properly replace batteries in the remote controller to ensure normal operation.

Multi System Air Conditioner Information

Notes on multi-system operation modes and indicator behavior when units operate simultaneously.

Troubleshooting Flowchart

A decision tree for diagnosing unit malfunctions based on symptoms and error codes.

Troubleshooting Check Table

A table listing abnormalities, conditions, and remedies for specific error codes indicated by lamp flashes.

Trouble Criterion of Main Parts

Criteria for checking resistance and voltage of key components like thermistors, motors, and fuses.

Troubleshooting Flow: Fan Motor Issues

Guides for diagnosing indoor fan motor failures, including resistance and voltage checks.

Troubleshooting Flow: Remote Control Issues

Guides for diagnosing remote controller and receiver PC board issues.

Troubleshooting Flow: Electronic Control Board

Guides for checking the indoor electronic control PC board for faults and component failures.

Troubleshooting Flow: Mis-wiring and Signal Error

Guides for diagnosing serial signal errors and mis-wiring between indoor and outdoor units.

Troubleshooting Flow: Mis-wiring (MUH-GE50VB)

Specific mis-wiring checks and procedures for MUH-GE50VB models.

Test Point Diagram and Voltage

Provides diagrams and voltage checks for the indoor control PC board and its components.

Disassembly Instructions

Terminal Detaching Points

Explains how to detach terminals with and without locking mechanisms before disassembly.

Disassembly: MSC-GE Series Front Panel & PC Board

Steps for removing the front panel and electronic control boards for MSC-GE series units.

Disassembly: MSC-GE Series Electrical Box & Motors

Steps for removing the electrical box, vane motor, and fan motor for MSC-GE series units.

Disassembly: MS-GE50VB/MSH-GE50VB Panel & PC Board

Steps for removing the panel and electronic control boards for MS/MSH-GE50VB units.

Disassembly: MS-GE50VB/MSH-GE50VB Electrical Box & Fan Motor

Steps for removing the electrical box, vane motor, and fan motor for MS/MSH-GE50VB units.

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