Mitsubishi Electric MUZ-FS12NAH User Manual

Models
MUZ-FS06NA
-
U1
MUZ-FS06NAH
-
U1
MUZ-FS09NA
-
U1
MUZ-FS09NAH
-
U1
MUZ-FS12NA
-
U1
MUZ-FS12NAH
-
U1
MUZ-FS15NA
-
U1
MUZ-FS15NAH
-
U1
MUZ-FS18NA
-
U1
MUZ-FS18NAH
-
U1
PARTS CATALOG (OBB873)
MUZ-FS06NA
MUZ-FS09NA
MUZ-FS12NA
MUZ-FS06NAH
MUZ-FS09NAH
MUZ-FS12NAH
CONTENTS
1. TECHNICAL CHANGES ······························2
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································4
4. OUTLINES AND DIMENSIONS ·····················6
5. WIRING DIAGRAM ·····································8
6. REFRIGERANT SYSTEM DIAGRAM ··········· 10
7. DATA······················································ 12
8. ACTUATOR CONTROL ····························· 23
9. SERVICE FUNCTIONS ······························ 24
10. TROUBLESHOOTING ······························· 25
11. DISASSEMBLY INSTRUCTIONS ················· 46
HFC
utilized
R410A
OUTDOOR UNIT
SERVICE MANUAL
No. OBH873
Indoor unit service manual
MSZ-FS•NA Series (OBH872)

Mitsubishi Electric MUZ-FS12NAH Specifications

General

Category	Air Conditioner
Brand	Mitsubishi Electric
Model	MUZ-FS12NAH
Heating Seasonal Performance Factor (HSPF)	10.0
HSPF	10.0
Refrigerant	R410A
Voltage	208/230V
Type	Split
Cooling Capacity	12000 BTU/h
Heating Capacity	12000 BTU/h
SEER	22
Indoor Unit Noise Level	19 dB

Summary

Outdoor Unit Specification Details

Outdoor Unit Wiring Diagram

Refrigerant System Diagram for Outdoor Unit

Performance Data and Curves

Performance Data for Cooling and Heating

Actuator Control Logic

Service Functions for Maintenance

Troubleshooting Guide

Cautions on Troubleshooting

Safety precautions and initial checks before starting troubleshooting.

Failure Mode Recall Function

Troubleshooting Check Table

Table correlating LED indications and abnormal points with conditions and remedies.

Troubleshooting Criterion for Main Parts

Specifies resistance/voltage criteria for checking key components like thermistors and motors.

Troubleshooting Flowcharts

Step-by-step diagnostic flowcharts for common issues like compressor and power supply.

Test Point Diagram and Voltage Specifications

Disassembly Instructions