Mitsubishi Electric MSZ-SF50VE3-EN1 User Manual

Models
MSZ-SF25VE
-
E1
,
E2
,
EN1
,
EN2
,
ER2
MSZ-SF35VE
-
E1
,
E2
,
EN1
,
EN2
,
ER2
MSZ-SF42VE
-
E1
,
E2
,
EN1
,
EN2
,
ER2
MSZ-SF50VE
-
E1
,
E2
,
EN1
,
EN2
,
ER2
MSZ-SF25VE2
-
E1
,
EN1
,
ER1
MSZ-SF35VE2
-
E1
,
EN1
,
ER1
MSZ-SF42VE2
-
E1
,
EN1
,
ER1
MSZ-SF50VE2
-
E1
,
EN1
,
ER1
MSZ-SF25VE3
-
E1
,
EN1
,
ER1
MSZ-SF35VE3
-
E1
,
EN1
,
ER1
MSZ-SF42VE3
-
E1
,
EN1
,
ER1
MSZ-SF50VE3
-
E1
,
EN1
,
ER1
SERVICE MANUAL
INDOOR UNIT
PARTS CATALOG (OBB600)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Revision E:
• MSZ-SF25/35/42/50VE3-
E1
,
EN1
,
ER1
have
been added.
Please void OBH600 REVISED EDITION-D.
Revision E:
• MSZ-SF25/35/42/50VE3-
E1
,
EN1
,
ER1
have
been added.
Please void OBH600 REVISED EDITION-D.
No. OBH600
REVISED EDITION-E
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 5
3. SPECIFICATION ················································ 7
4. NOISE CRITERIA CURVES ···························· 10
5. OUTLINES AND DIMENSIONS ·······················11
6. WIRING DIAGRAM ·········································· 12
7. REFRIGERANT SYSTEM DIAGRAM ············· 16
8. SERVICE FUNCTIONS ··································· 17
9. MICROPROCESSOR CONTROL ··················· 19
10. TROUBLESHOOTING ····································· 27
11. DISASSEMBLY INSTRUCTIONS ···················· 40
Outdoor unit service manual
MUZ-SF·VE(H) Series (OBH629)
MXZ-C·VA Series (OB584)
MXZ-D·VA Series (OBH626)
MXZ-8B Series (OCH480)
MXZ-E·VA Series (OBH723)

Mitsubishi Electric MSZ-SF50VE3-EN1 Specifications

General

Brand	Mitsubishi Electric
Model	MSZ-SF50VE3-EN1
Category	Air Conditioner
Language	English

Summary

Technical Changes

Specification

Wiring Diagram

Service Functions

Microprocessor Control

Emergency/Test Operation

Procedures for emergency and test operation modes.

Troubleshooting

Cautions on Troubleshooting

Important precautions to follow before starting troubleshooting.

Troubleshooting Procedure

Steps to follow when diagnosing issues with the air conditioner.

Failure Mode Recall Function

Recalling and interpreting memorized failure codes from the unit.

Indoor Unit Failure Mode Table

Table correlating LED blinking patterns to indoor unit faults.

Instruction of Troubleshooting

Flowchart for diagnosing unit malfunctions based on symptoms.

Troubleshooting Check Table

Table mapping symptoms to conditions and remedies for troubleshooting.

Trouble Criterion of Main Parts

Criteria for checking the functionality of key internal parts.

Troubleshooting Flow

Step-by-step troubleshooting guide for indoor fan motor issues.

Remote Controller and PC Board Check

Diagnosing issues related to the remote controller or main control board.

Indoor PC Board and Fan Motor Check

Procedures for checking PC boards and the indoor fan motor.

Miswiring and Serial Signal Error Check

Test Point Diagram and Voltage Information

Disassembly Instructions

Removing the Panel

Remove the Indoor Electrical Box

Removing Multiple Internal Circuit Boards

Removing Indoor Fan Motor, Coil Thermistor, and Line Flow Fan