Daikin SkyAir Super Inverter 70 D Series Service Manual page 163

Troubleshooting by Remote Controller Display / LED Display
Troubleshooting
154
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Check the installation
conditions.
Is the stop
valve open?
YES
Is the UVWN
wiring normal?
YES
Is high
differential
pressure starting?
(0.5MPa or more)
NO
Check and see
whether compressor is
short-circuited or
ground.
NO
Are inverter
output voltages
the same for
3 phases?
YES
Does low
or high pressure
vary even instantaneously
when restarting
compressor?
NO
NO
Open the stop valve.
NO
Connect correctly.
YES
Remedy the cause.
YES
Replace the compressor.
NO
Replace the inverter PC board.
YES
Replace the compressor.
SiE25-110
(S2583)
Troubleshooting