Daikin FCQ18PVJU Service Manual page 132

Troubleshooting by Indication on the Remote Controller
Troubleshooting
Output current check
125
Be sure to turn off the power switch before connecting or disconnecting
Caution
the connector, or parts could be damaged.
The
secondary
current of the inverter
is higher than X16.8A,
260sec. for
each phase.
NO
Compressor
inspection The
compressor's coil is
disconnected.
NO
Disconnect the the connection
between the compressor and
inverter. Make the power
transistor check mode setting
ON by service mode.
Inverter
output
voltage check
Inverter output voltage
is not balanced
(Normal if within ±5V).
Must be measured
when frequency
is stable.
YES
After turning
L8
on again, " " blinks
again.
YES
YES
YES
NO
NO
SiUS28-902_a
Compressor overload
Inspection of the compressor and
refrigerant system is required.
Replace the compressor.
Replace the outdoor unit P.C.B.
(A1P).
Reset and restart.
Compressor inspection
Inspect according to the diagnosis
procedure for odd noises, vibration
and operating status of the
compressor.
Troubleshooting