Daikin SkyAir Service Manual page 195

Troubleshooting by Remote Controller Display / LED Display
Troubleshooting
184
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
NO
stop valve
open?
YES
Is the
NO
UVWN wiring
normal?
YES
Is high
pressure higher
YES
than 2.6 MPa
at starting?
NO
Check
and see
YES
whether compressor is
short-circuited or
ground.
NO
Are
inverter output
NO
voltages the same for
3 phases?
YES
Does low or
high pressure vary
YES
even instantaneously
when restarting
compressor?
NO
Open the stop valve.
Connect correctly.
Remedy the cause.
Replace the compressor.
Replace the inverter PC board.
Replace the compressor.
SiBE28-804
Troubleshooting