SERVICE MANUAL
CONTENTS
1. SAFETY PRECAUTION
...................................
2
2. SPECIFICATIONS
............................................
8
3. PART NAMES AND FUNCTIONS
..................
9
4. OUTLINES AND DIMENSIONS
.....................
10
5. WIRING DIAGRAM
.........................................
11
6. FIELD WIRING
...............................................
13
7. WATER SYSTEM DIAGRAM
.........................
14
8. CONTROLS
...................................................
17
9. TROUBLESHOOTING
...................................
43
10. DISASSEMBLY PROCEDURE
......................
78
11. SUPPLEMENTARY INFORMATION
..............
93
12. SERVICE AND MAINTENANCE
...................
94
R32
PARTS CATALOG (OCB722)
HEAT PUMP UNIT
HEAT PUMP UNIT
MAIN REMOTE
CONTROLLER
December 2020
No. OCH722
REVISED EDITION-A
[Model Name]
EHGT17D-YM9ED
[Service Ref.]
EHGT17D-YM9ED.UK
Revision:
• DISASSEMBLY PROCEDURE
has been modified in
REVISED EDITION-A.
OCH722 is void.
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