Daikin R-410A Service Manual page 162

Troubleshooting by Indication on the Remote Controller
Troubleshooting
152
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Is connection
wire connected
NO
between the connector
X205A and X25A?
YES
Turn on again.
Does
the voltage between
NO
terminals P and N
gradually rise to
283VDC after
turning on?
YES
The voltage
between the P and N
NO
terminals is 400VDC and
190VDC or more when
the compressor is
running.
YES
Is the
power supply voltage
YES
applied at LB and NB
on the noise filter PC
board?
NO
Is the
power supply voltage at NO
the connector X1A of
outdoor PC board
side?
YES
SiBE39-402A
Repair wiring.
Replace the inverter PC
board.
Replace the inverter PC
board.
Replace the inverter PC
board.
Monitor field power
supply.
Check the transmission
wiring between the
outdoor unit PC board
and inverter unit.
(V3186)
Troubleshooting