Mitsubishi Electric MSZ-WR18NA Service Manual

Outdoor unit service manual
MUZ-WR•NA Series (OBH819)
PARTS CATALOG (OBB818)
MSZ-WR24NA
INDOOR UNIT
SERVICE MANUAL
INDOOR UNIT
Models
MSZ-WR09NA
-
U1
,
U2
MSZ-WR12NA
-
U1
,
U2
MSZ-WR18NA
-
U1
MSZ-WR24NA
-
U1
CONTENTS
1. TECHNICAL CHANGES
· ·······························
2
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································5
4. OUTLINES AND DIMENSIONS ·····················7
5. WIRING DIAGRAM ·····································8
6. REFRIGERANT SYSTEM DIAGRAM ···········10
7. SERVICE FUNCTIONS ······························11
8. MICROPROCESSOR CONTROL ················13
9. TROUBLESHOOTING ······························· 17
10. DISASSEMBLY INSTRUCTIONS ·················32
No. OBH818
REVISED EDITION-C
OBH818 REVISED EDITION-B is void.
Revision C:
• MSZ-WR09/12NA -
U2
have been added.

Mitsubishi Electric MSZ-WR18NA Specifications

General

HSPF (Heating)	10.0
Operating Temperature (Cooling)	14°F to 115°F
Cooling Capacity	18000 BTU/h
Power Supply	208/230V, 60Hz
Refrigerant	R410A