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Mitsubishi Electric MSZ-CA25VB User Manual

Mitsubishi Electric MSZ-CA25VB
28 pages
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SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES·······························6
5. OUTLINES AND DIMENSIONS ·························7
6. WIRING DIAGRAM ············································8
7. REFRIGERANT SYSTEM DIAGRAM················8
8. SERVICE FUNCTIONS ······································9
9. TROUBLESHOOTING······································11
10. DISASSEMBLY INSTRUCTIONS·····················22
11. PARTS LIST······················································24
Wireless type
Models
MSZ-CA25VB -
(WH)
MSZ-CA35VB -
(WH)
E1
E1
No. OB390
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MSZ-CA25VB -
MSZ-CA35VB -
E1
E1
NOTE:
This service manual describes technical data of the indoor units.
•As for outdoor units MUZ-CA25VB- and MUZ-CA35VB- , refer to the service manual
OB391.
•As for outdoor units MXZ-A14WV- and MXZ-A18WV- , refer to the service manual
OB319.
E1E1
E1E1
Indication of
model name
OB390--1qxp 05.2.9 11:27 Page 1
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Mitsubishi Electric MSZ-CA25VB Specifications

General IconGeneral
TypeSplit System
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
Energy Efficiency Ratio (EER)3.21
Coefficient of Performance (COP)3.61
Power Supply220-240 V, 50 Hz
Outdoor Unit Dimensions (W x H x D)699 x 538 x 249 mm
Weight (Indoor Unit)9 kg
RefrigerantR410A
Noise Level (Outdoor Unit)49 dB

Summary

1. Technical Changes

2. Part Names and Functions

Indoor Unit Components

Identifies and describes the parts of the indoor air conditioning unit.

Included Accessories

Lists the accessories provided with the indoor unit.

3. Specification

Main Electrical Parts Specifications

Detailed specifications and rating conditions of key electrical components.

4. Noise Criteria Curves

5. Outlines and Dimensions

6. Wiring Diagram

7. Refrigerant System Diagram

8. Service Functions

Timer Short Mode for Service

Enables faster timing for service operations like compressor start.

PC Board Modification for Multi-Unit Operation

Modifies remote controller PC boards for individual unit control in multi-systems.

Auto Restart Function Configuration

Sets the unit to resume operation automatically after a power interruption.

9. Troubleshooting

Troubleshooting Cautions and Battery Replacement

Essential safety precautions and procedure for replacing remote controller batteries.

General Troubleshooting Procedure

Outlines the systematic approach to diagnosing and resolving unit malfunctions.

Failure Mode Recall Function

Procedure to recall and analyze unit failure modes and error codes.

Troubleshooting Instruction Flowchart

A detailed flowchart guiding the user through troubleshooting steps.

Component Checks and System Diagnostics

Steps for checking components like boards, wiring, fuses, and system signals.

10. Disassembly Instructions

Panel Removal Procedure

Detailed steps for safely removing the front panel of the indoor unit.

Electronic Board Removal

Guide to removing the electronic control and power monitor receiver boards.

Disassembly Procedures

Electrical Box Removal

Steps for detaching and removing the unit's electrical box.

Nozzle Assembly and Vane Motor Removal

Procedure to remove the nozzle assembly and the vane motor component.

Indoor Fan Motor and Line Flow Fan Removal

Steps to remove the indoor fan motor and the line flow fan assembly.

11. Parts List

Indoor Unit Structural Parts Listing

A list of structural components for the indoor unit with part numbers.

Accessories and Remote Controller Listing

Lists of accessories and the remote controller, including their part numbers.

Indoor Unit Parts Details

Electrical and Functional Parts Listing

Detailed list of indoor unit's electrical and functional components with part numbers.

Heat Exchanger Components Listing

Lists the components associated with the indoor unit's heat exchanger.

11-5. Air Cleaning Filter

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