Mitsubishi Electric MSZ-FH18NA Service Manual

CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 5
4. OUTLINES AND DIMENSIONS ························ 6
5. WIRING DIAGRAM ············································ 7
6. REFRIGERANT SYSTEM DIAGRAM ··············· 8
7. SERVICE FUNCTIONS ····································· 9
8. MICROPROCESSOR CONTROL ····················11
9. TROUBLESHOOTING ····································· 20
10. DISASSEMBLY INSTRUCTIONS ···················· 32
INDOOR UNIT
SERVICE MANUAL
INDOOR UNIT
Models
MSZ-FH06NA
MSZ-FH09NA
MSZ-FH12NA
MSZ-FH15NA
MSZ-FH18NA
MSZ-FH18NA2
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
No. OBH683
REVISED EDITION-D
Please void OBH683 REVISED EDITION-C.
Revision D:
• MSZ-FH06NA and MSZ-FH18NA2 have been
added.
PARTS CATALOG (OBB683)
Outdoor unit service manual
MUZ-FH·NA(H) Series (OBH684)
MXZ-C•NA,NAHZ Series (OCH573)

Mitsubishi Electric MSZ-FH18NA Specifications

General

Cooling Capacity	18, 000 BTU/h
Refrigerant	R410A
Type	Split System
Indoor Unit Noise Level	19 dB(A)
HSPF	10.0
Power Supply	208/230V, 60Hz
Operating Temperature (Cooling)	14°F to 115°F
Operating Temperature (Heating)	-13°F to 75°F