Daikin SkyAir FHQ24PVJU - Page 264

Troubleshooting by Error Codes SiUS281811EA
258 Part 6 Service Diagnosis
Reference
CHECK 4 Refer to page 295.
NO
YES
Has the
compressor started
up at high differential pressure
(not less than 0.5 MPa
(72.5 psi))?
Restart the
compressor, and then
check whether or not
the error recurs.
Is the power
transistor normal?
YES
End of work
Defective pressure
equalization or else
may have occurred.
Check the refrigerant
system.
Defective pressure
equalization:
Check the refrigerant
system.
YES
Power ON
Power OFF
Power OFF
Power ON
Power OFF
Power ON
NO
NO
Replace the outdoor
main PCB (A1P).
NO
Continue the operation.
(Instantaneous power
failure, etc.)
NO
Continue the operation.
Replace the compressor.
A
Does the error recur
when restart operation?
Replace the outdoor main PCB.
YES
YES
Does the error recur
when restart operation?
CHECK 4
No PCB error.
Reinstall the PCB.
()
YES
The
insulation resistance is
low (i.e., not more than
100 k:.)
Some phase has
a broken wire.
YES
Check the compressor motor
coil for any broken wire.
NO
NO
Replace the compressor.