Daikin FCQ18PVJU - Page 114

Troubleshooting by Indication on the Remote Controller SiUS28-902_a
107 Troubleshooting
Troubleshooting
Check the installation
conditions.
Is the stop valve open?
NO
Is the UVW wiring
normal?
NO
NO
NO
NO
Is high
differential pressure starting?
(72psi or more)
YES
YES
YES
Check and see
whether compressor is
short-circuited or
grounded.
YES
YES
Are inverter
output voltages the same
for 3 phases?
Does low or
high pressure vary
even instantaneously when
restarting
compressor?
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
the connector, or parts could be damaged.
Open the stop valve.
Connect correctly.
Remedy the cause.
Replace the compressor.
Replace the inverter P.C.B.
(A1P).
Replace the compressor.
NO