Mitsubishi Electric MSZ-SF42VE3-E1 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-SF42VE3-E1 Specifications

General

Cooling Capacity	4.2 kW
Heating Capacity	5.0 kW
Power Supply	220-240 V, 50 Hz
Refrigerant	R32
Outdoor Unit Dimensions (HxWxD)	550 x 780 x 285 mm
Outdoor Unit Dimensions (WxHxD)	780 x 550 x 285 mm

Summary

Technical Changes

Specification

Wiring Diagram

Service Functions

Microprocessor Control

Timer Operation

Weekly Timer Operation

Instructions for setting up daily ON/OFF timers for a week.

Emergency/Test Operation

Troubleshooting

Cautions on Troubleshooting

Important safety precautions and checks before starting troubleshooting procedures.

Failure Mode Recall Function

How to recall and identify memorized error conditions using indicator lamps.

Indoor Unit Failure Mode Table

Lists indoor unit failure modes based on indicator lamp blinking patterns.

Instruction of Troubleshooting

A flowchart to guide diagnosis of common indoor and outdoor unit operation issues.

Troubleshooting Check Table

Lists abnormalities, symptoms, conditions, and remedies based on indicator lamp flashes.

Trouble Criterion of Main Parts

Methods and criteria for checking main internal parts like thermistors and motors.

Troubleshooting Flow

Detailed troubleshooting flowcharts for indoor fan motor issues.

Check of Remote Controller and Indoor Electronic Control P.C. Board

Steps to check remote controller function and diagnose indoor electronic control board issues.

Check of Indoor P.C. Board and Indoor Fan Motor

Procedures for checking the indoor power P.C. board and the indoor fan motor for faults.

How to Check Miswiring and Serial Signal Error

Step-by-step guide to diagnose and resolve miswiring and serial signal communication errors.

Test Point Diagram and Voltage

Disassembly Instructions

Removing the Indoor Power P.C. Board, Switch Board, Display Board, Receiver Board, and Indoor Electronic Control P.C. Board

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