Daikin VRV-WIII RWEYQ72PTJU Service Manual page 169

SiUS30-1301
Service Diagnosis
A
The
resistance
among U, V, and W
YES
are unbalanced or
short circuited.
NO
Remove the signal
connector from the fan
motor and check the
resistance (∗2).
Between
Vcc and GND
terminals, and
YES
between GND and Hw,
Hv, or Hu terminals
are short-
circuited.
NO
Turn ON the power.
The
HAP lamp
of the indoor unit
YES
PCB (A1P) blinks and
the HAP lamp of the
fan PCB (A2P)
is OFF.
NO
Troubleshooting by Indication on the Remote Controller
Replace the fan motor.
Replace the fan motor.
Replace the fan PCB (A2P).
Replace the fan motor.
161