Daikin VRV-WIII RWEYQ72PTJU Service Manual page 168

Troubleshooting by Indication on the Remote Controller
Troubleshooting
160
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Turn OFF the power and
wait for 10 minutes.
There is a
YES
foreign matter around
the fan.
NO
The
fan motor
connectors (X1A
YES
and X2A) of the fan
PCB (A2P) are
disconnected.
NO
The
connectors
between the
indoor unit PCB (A1P)
YES
and the fan PCB (A2P)
are disconnected.
NO
The
fuse (F3U,
NO
white) on the fan PCB
(A2P) has no
continuity.
YES
The
fan can
be moved
lightly by hand after
NO
the fan motor connector
of the fan PCB
(A2P) is
removed.
YES
YES
The
resistance
between the
power wire terminals
YES
of the fan motor and
motor frame (meal
part) is 1 MΩ
or below.
NO
Remove the power wire
connector from the fan
motor and measure the
resistance between U
and V, V and W, and W
and U phases (∗1).
A
SiUS30-1301
Remove the foreign matter.
Connect correctly.
Connect correctly.
Replace the fan PCB (A2P).
Replace the fan motor.
Replace the fan motor.
Service Diagnosis