Service manual

67
14
Troubleshooting
Diagnostic Procedure for Check Code
Check code Operation cause
1. Outdoor unit power source error
[14] 2. Wiring error on inverter P.C. board
G-Tr short circuit protective system 3. AC fuse disconnection
alarm 4. Inverter compressor error
(Gate Transistor) 5. Defective inverter P.C. board
Is the power source voltage
of the outdoor unit normal?
Is the connection of the
wiring connector on the inverter
P.C. board normal?
Is AC 20A fuse working?
Is inverter compressor
normal?
Is smoothing capacitor normal?
(2200µ F,400V x 2)
Check inverter P.C. board.
Confirm the power source supply.
Modify connector of wiring.
Replace inverter P.C. board and fuse.
Replace inverter P.C. board and
compressor.
No
Yes
Yes
No
No
Yes
No
Yes
No
Yes
Check capacity decrease and
appearance. Replace inverter P.C. board.