Mitsubishi Electric MSXY-FN24VE-R1 User Manual

PARTS CATALOG (OBB779)
SERVICE MANUAL
INDOOR UNIT
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 6
4. NOISE CRITERIA CURVE ································ 8
5. OUTLINES AND DIMENSIONS ······················ 10
6. WIRING DIAGRAM ··········································· 11
7. REFRIGERANT SYSTEM DIAGRAM ············· 12
8. SERVICE FUNCTIONS ··································· 13
9. MICROPROCESSOR CONTROL ··················· 15
10. TROUBLESHOOTING ····································· 21
11. DISASSEMBLY INSTRUCTIONS ···················· 38
No. OBH779
REVISED EDITION-C
MSXY-FN20VE MSXY-FN24VE
OBH779 REVISED EDITION-B is void.
Models
MSXY-FN07VE
-
R1
,
R2
MSXY-FN10VE
-
R1
,
R2
MSXY-FN13VE
-
R1
,
R2
MSXY-FN18VE
-
R1
,
R2
MSXY-FN20VE
-
R1
,
R2
MSXY-FN24VE
-
R1
,
R2
Revision C:
• The drawing of the printed circuit board of the remote
controller for MSXY-FN07/10/13/18/20/24VE-
R2
have
been corrected in 8. SERVICE FUNCTIONS.
Outdoor unit service manual
MXY-G·VA -
R
Series (OBH722)

Mitsubishi Electric MSXY-FN24VE-R1 Specifications

General

Power Supply	220-240V, 50Hz
Refrigerant	R410A
Indoor Unit Dimensions (W x H x D)	1100 x 339 x 235 mm
Outdoor Unit Dimensions (W x H x D)	840 x 880 x 330 mm
Type	Split System

Summary

1. TECHNICAL CHANGES

3. SPECIFICATION

6. WIRING DIAGRAM

7. REFRIGERANT SYSTEM DIAGRAM

8. SERVICE FUNCTIONS

8-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

9. MICROPROCESSOR CONTROL

9-1. COOL (0) OPERATION

9-2. DRY (0) OPERATION

9-4. "I FEEL CONTROL” (□) OPERATION

Explains the intelligent temperature control mode and its features.

9-5. AUTO VANE OPERATION

9-6. TIMER OPERATION

9-8. EMERGENCY/TEST OPERATION

Details the emergency and test operation modes for servicing.

10. TROUBLESHOOTING

10-1. CAUTIONS ON TROUBLESHOOTING

Provides essential precautions before performing troubleshooting.

10-2. FAILURE MODE RECALL FUNCTION

Explains how to recall and identify past failure modes.

10-3. INSTRUCTION OF TROUBLESHOOTING

Provides a flowchart for troubleshooting procedures based on symptoms.

10-4. TROUBLESHOOTING CHECK TABLE

Lists common abnormalities, symptoms, conditions, and remedies.

10-5. TROUBLE CRITERION OF MAIN PARTS

Details how to check and test critical internal components.

10-6. TROUBLESHOOTING FLOW

Step-by-step troubleshooting guides for specific issues like fan motor.

B Check of remote controller and indoor electronic control P.C. board

Checks for issues with the remote controller and indoor electronic control P.C. board.

C Check of indoor P.C. board and indoor fan motor

D How to check miswiring and serial signal error

E Check of installation of the horizontal vane

10-7. TEST POINT DIAGRAM AND VOLTAGE

Provides diagrams and voltage specifications for testing components.

11. DISASSEMBLY INSTRUCTIONS

1. Removing the panel

2. Removing the indoor power P.C. board and the electrical box

3. Removing the indoor electronic control P.C. board

6. Removing the indoor fan motor, the indoor coil thermistor and the line flow fan