Mitsubishi Electric MUZ-WR12NA User Manual

Models
MUZ-WR09NA
-
U1
,
U2
MUZ-WR12NA
-
U1
,
U2
MUZ-WR18NA
-
U1
,
U2
MUZ-WR24NA
-
U1
HFC
utilized
R410A
MUZ-WR24NA
PARTS CATALOG (OBB819)
SERVICE MANUAL
No. OBH819
REVISED EDITION-B
Indoor unit service manual
MSZ-WR•NA Series (OBH818)
CONTENTS
1. TECHNICAL CHANGES ······························2
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································4
4. OUTLINES AND DIMENSIONS ·····················7
5. WIRING DIAGRAM ·····································9
6. REFRIGERANT SYSTEM DIAGRAM ··········· 12
7. DATA······················································ 15
8. ACTUATOR CONTROL ····························· 25
9. SERVICE FUNCTIONS ······························ 26
10. TROUBLESHOOTING ······························· 27
11. DISASSEMBLY INSTRUCTIONS ················· 52
OUTDOOR UNIT
OBH819 REVISED EDITION-A is void.
Revision B:
• MUZ-WR09/12/18NA-
U2
have been added.
• 10-4. The resistant value of the defrost
heater has been corrected.

Mitsubishi Electric MUZ-WR12NA Specifications

General

Category	Air Conditioner
Brand	Mitsubishi Electric
Model	MUZ-WR12NA
Refrigerant	R410A
Indoor Unit Dimensions (H x W x D)	11-5/8 x 33-1/8 x 9-1/8 inches
Outdoor Unit Dimensions (H x W x D)	21-5/8 x 31-1/2 x 11-13/16 inches
Cooling Capacity	12000 BTU/h
Power Supply	208/230V, 60Hz
Operating Temperature (Cooling)	14°F to 115°F