Daikin FTKM-U Series Service Manual page 92

Troubleshooting
Reference
Check No.15 Refer to P.93
Reference
Check No.17 Refer to P.96
Reference
Check No.18 Refer to P.96
Reference
Check No.22 Refer to P.99
88
A Continued from the
previous page
Any LED off?
NO
Check No. 22
Check the power module.
Normal?
YES
Turn off the power, and reconnect
the harnesses. Turn on the power
again and start operation.
Check the power supply voltage.
Is the voltage
fluctuation within
±10% from the rated
value?
YES
Short circuit
or wire breakage
between compressor's coil
phases?
YES
YES
NO
NO
NO
SiMX042215E
Correct the power supply
or replace the outdoor unit
PCB (main PCB).
Replace the outdoor unit
PCB (main PCB).
Correct the power supply.
Check the discharge
pressure.
Go to Check No. 18.
Replace the compressor.
(R24912)
Part 6 Service Diagnosis