Daikin VRVII - Page 273

Troubleshooting by Indication on the Remote Controller
268
Refer to P.354.
YES
Has the
inverter PCB caused
damage?
Replace the
inverter PCB.
∗ If the inverter
PCB is badly
damaged,
compressor
and fan motor
are likely to
get defective.
NO
A
YES
Stop
(standby) before
the fan rotates.
Replace the
noise filter PCB.
(Defective noise
filter)
NO
YES
Stop
(standby) when
the compressor
startup.
Replace the
inverter PCB.
∗ If the inverter
PCB is badly
damaged,
recheck the
compressor.
NO
YES
The U2 error
recurs.
Check the
harness.
Continue the
operation.
∗ The error may
temporarily
result from
external
factors.
Causes:
Instantaneous
power failure
(open phase),
noises, or else.
NO
Remove and insert the
connectors.
Turn ON the power
supply, and start
operation.
CHECK 4