Mitsubishi Electric MUZ-A24YV User Manual

SERVICE MANUAL
Wireless type
Models
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MUZ-A18YV -
MUZ-A24YV -
MUZ-A26YV -
E1
E1
E1
MUZ-A18YV -
MUZ-A24YV -
MUZ-A26YV -
E1
E1
E1
Indication of
model name
HFC
utilized
R410A
Revision E:
• ”Check of outdoor thermistors” has been corrected.
Please void OB346 REVISED EDITION-D.
CONTENTS
1. TECHNICAL CHANGES ····································3
2. PART NAMES AND FUNCTIONS······················6
3. SPECIFICATION·················································7
4. NOISE CRITERIA CURVES·····························10
5. OUTLINES AND DIMENSIONS························11
6. WIRING DIAGRAM ··········································12
7. REFRIGERANT SYSTEM DIAGRAM··············14
8. PERFORMANCE CURVES······························16
9. ACTUATOR CONTROL····································31
10. TROUBLESHOOTING······································32
11. DISASSEMBLY INSTRUCTIONS·····················46
12. PARTS LIST······················································50
NOTE:
This service manual describes technical data of the outdoor units.
•As for indoor units MSZ-A18YV - , MSZ-A24YV - and MSZ-A26YV - , refer to the
service manual OB345.
•As for indoor units MCFZ-A18WV - and MCFZ-A24WV - , refer to the service manual
OB344.
E1E1
E1E1E1
No. OB346
REVISED EDITION-E
OB346E --1qxp 07.2.8 6:53 PM Page 1

Mitsubishi Electric MUZ-A24YV Specifications

General

Brand	Mitsubishi Electric
Model	MUZ-A24YV
Category	Air Conditioner
Language	English

Summary

TECHNICAL CHANGES

PART NAMES AND FUNCTIONS

SPECIFICATION

Specifications and rating conditions of main electric parts

Details electrical components and their ratings for the outdoor unit.

NOISE CRITERIA CURVES

OUTLINES AND DIMENSIONS

WIRING DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

PERFORMANCE CURVES

ACTUATOR CONTROL

Outdoor fan motor control

Describes the fan motor's ON/OFF operation based on compressor status.

R.V. coil control

Details the control logic for the R.V. coil during heating and cooling modes.

Relation between main sensor and actuator

Maps sensors to their purpose and corresponding actuators.

TROUBLESHOOTING

Cautions on troubleshooting

Highlights safety precautions and preliminary checks before starting troubleshooting.

Instruction of troubleshooting

Presents a flowchart for diagnosing system faults based on operational status and error indications.