Mitsubishi Electric MUZ-HM12NA-U1 User Manual

Models
MUZ-HM09NA
-
U1
,
U8
MUZ-HM18NA
-
U1
MUZ-HM09NA2
-
U1
,
U8
MUZ-HM18NA2
-
U1
MUZ-HM12NA
-
U1
,
U8
MUZ-HM24NA
-
U1
MUZ-HM12NA2
-
U1
,
U8
MUZ-HM24NA2
-
U1
MUZ-HM15NA
-
U1
MUZ-HM15NA2
-
U1
HFC
utilized
R410A
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
MUZ-HM24NA
PARTS CATALOG (OBB747)
INDOOR UNIT
SERVICE MANUAL
OUTDOOR UNIT
No. OBH747
REVISED EDITION-C
OBH747 REVISED EDITION-B is void.
Revision C:
• MUZ-HM09/12NA
-
U1
, MUZ-HM09/12NA2
-
U1
have been added.
Indoor unit service manual
MSZ-HM•NA Series (OBH746)
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 5
4. OUTLINES AND DIMENSIONS ······················ 10
5. WIRING DIAGRAM ·········································· 12
6. REFRIGERANT SYSTEM DIAGRAM ············· 15
7. DATA ································································ 19
8. ACTUATOR CONTROL ··································· 32
9. SERVICE FUNCTIONS ··································· 33
10. TROUBLESHOOTING ····································· 34
11. DISASSEMBLY INSTRUCTIONS ···················· 59

Mitsubishi Electric MUZ-HM12NA-U1 Specifications

General

Seasonal Energy Efficiency Ratio (SEER)	16.0
Refrigerant	R410A
Cooling Capacity	12000 BTU/h
Outdoor Unit Dimensions (H x W x D)	31.5 inches
Power Supply	208/230V
Voltage (V)	208/230V
Operating Temperature (Cooling)	14°F to 115°F

Summary

Technical Changes

Specifications

7-1. Performance Data

7-2. Performance Curves

7-5. Capacity and Input Correction

Refrigerant System Diagram

Actuator Control

Service Functions

Troubleshooting

10-1. Cautions on Troubleshooting

Safety precautions and general checks before troubleshooting.

10-2. Failure Mode Recall Function

How to recall and interpret failure codes from the unit.

10-3. Troubleshooting Check Table

Table listing symptoms, LED indications, conditions, and remedies.

10-4. Trouble Criterion of Main Parts

Resistance and voltage criteria for checking major components.

10-5. Troubleshooting Flow

Step-by-step troubleshooting guides for specific issues.

10-6. Test Point Diagram and Voltage

Disassembly Instructions