Mitsubishi Electric MSZ-AP71VG-E2 User Manual

1
SERVICE MANUAL
INDOOR UNIT
PARTS CATALOG (OBB788)
No. OBH788
REVISED EDITION-C
Outdoor unit service manual
MUZ-AP∙VG/VGH Series (OBH789)
MXZ-D∙VA/VAH Series (OBH626)
MXZ-E∙VA/VAH Series (OBH723)
MXZ-F∙VF/VFH Series (OBH790)
CONTENTS
1. TECHNICAL CHANGES ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 3
2. PART NAMES AND FUNCTIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 4
3. SPECIFICATION ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 6
4. NOISE CRITERIA CURVES ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 9
5. OUTLINES AND DIMENSIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙11
6. WIRING DIAGRAM ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 12
7. REFRIGERANT SYSTEM DIAGRAM ∙∙∙∙∙∙∙∙∙∙∙∙∙ 18
8. SERVICE FUNCTIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 19
9. MICROPROCESSOR CONTROL ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 21
10. TROUBLESHOOTING ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 29
11. DISASSEMBLY INSTRUCTIONS ∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙∙ 45
OBH788 REVISED EDITION-B is void.
MSZ-AP25VG
MSZ-AP35VG
MSZ-AP42VG
MSZ-AP50VG
MSZ-AP25VGK
MSZ-AP35VGK
MSZ-AP42VGK
MSZ-AP50VGK
Revision C:
• MSZ-AP25/35/42VG-
E2
,
EN2
,
ET2
,
MSZ-AP25/35/42VGK-
E2
,
EN2
,
ET2
,
MSZ-AP50VG-
ER1
,
E2
,
EN2
,
ET2
,
MSZ-AP50VGK-
ER1
,
E2
,
EN2
,
ET2
,
MSZ-AP60/71VG-
ER1
,
E2
,
ET2
,
MSZ-AP60/71VGK-
ER1
,
E2
,
ET2
,
have been added.
Models
MSZ-AP25VG
-
E1
,
EN1
,
ET1
,
ER1
,
E2
,
EN2
,
ET2
MSZ-AP25VGK
-
E1
,
EN1
,
ET1
,
ER1
,
E2
,
EN2
,
ET2
MSZ-AP35VG
-
E1
,
EN1
,
ET1
,
ER1
,
E2
,
EN2
,
ET2
MSZ-AP35VGK
-
E1
,
EN1
,
ET1
,
ER1
,
E2
,
EN2
,
ET2
MSZ-AP42VG
-
E1
,
EN1
,
ET1
,
ER1
,
E2
,
EN2
,
ET2
MSZ-AP42VGK
-
E1
,
EN1
,
ET1
,
ER1
,
E2
,
EN2
,
ET2
MSZ-AP50VG
-
E1
,
EN1
,
ET1
,
ER1
,
E2
,
EN2
,
ET2
MSZ-AP50VGK
-
E1
,
EN1
,
ET1
,
ER1
,
E2
,
EN2
,
ET2
MSZ-AP60VG
-
E1
,
ET1
,
ER1
,
E2
,
ET2
MSZ-AP60VGK
-
E1
,
ET1
,
ER1
,
E2
,
ET2
MSZ-AP71VG
-
E1
,
ET1
,
ER1
,
E2
,
ET2
MSZ-AP71VGK
-
E1
,
ET1
,
ER1
,
E2
,
ET2

Mitsubishi Electric MSZ-AP71VG-E2 Specifications

General

Type	Split System
Cooling Capacity	7.1 kW
Heating Capacity	8.1 kW
Power Supply	220-240 V, 50 Hz
Refrigerant	R32
Weight (Outdoor Unit)	55 kg
Energy Efficiency Class Cooling	A++
Energy Efficiency Class Heating	A+
Outdoor Unit Noise Level	55 dB(A)
Indoor Unit Noise Level	29/34/39/45 dB(A)

Summary

3. SPECIFICATION

Unit and Component Specifications

Provides detailed electrical and performance specifications for the units.

6. WIRING DIAGRAM

8. SERVICE FUNCTIONS

9. MICROPROCESSOR CONTROL

Remote Controller Operation and Unit Display

10. TROUBLESHOOTING

Troubleshooting Overview and Cautions

Safety precautions and general steps for troubleshooting.

Failure Mode Recall Function

How to recall and interpret abnormal conditions memorized by the unit.

Troubleshooting Flowcharts and Checks

Wi-Fi Interface Troubleshooting

Specific steps for diagnosing Wi-Fi connectivity problems.

Troubleshooting Check Table

Symptom-based table for identifying and resolving issues.

Indoor Fan Motor Troubleshooting Flow

Flowchart for diagnosing indoor fan motor errors.

Remote Controller & P.C. Board Checks

Steps to verify remote controller and indoor P.C. board functionality.

Indoor P.C. Board and Fan Motor Component Checks

Detailed checks for specific components on the indoor P.C. board.

Miswiring and Serial Signal Error Diagnosis

Procedures for identifying wiring faults and communication errors.

10-7. TEST POINT DIAGRAM AND VOLTAGE

Indoor P.C. Board Test Points and Voltages

Diagrams showing test points and expected voltages on the indoor P.C. board.

Indoor Electronic Control P.C. Board Test Points

Diagrams showing test points and expected voltages for the control P.C. board.

11. DISASSEMBLY INSTRUCTIONS