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Check code
[17]
Current detection circuit alarm
Refer to outdoor unit
Is wiring connector on IPDU PC
board normal?
Yes
Is compressor operation normal?
Yes
Check IPDU PC board.
Check code
[1C]
Extension IC, EEPROM short circuit alarm
(Outdoor unit error)
Is there an irregularity of outdoor
unit power source?
No
Check interface PC board fault code.
Troubleshooting
Diagnostic procedure for check code
No
No
Yes
Operation cause
1. Defective wiring of IPDU PC board.
2. Defective IPDU PC board.
Operation cause
1. Outdoor unit power source error.
2. Interface PC board error.
Check power source voltage.
Modify power source line.
Check noise interference from outside, etc.
Modify connection of wiring
Compressor error
43
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