Daikin VRV EMERION REYQ-AATJA Service Manual page 384

Troubleshooting by Error Code
Reference
CHECK 16 Refer to page 466.
377
A
The fan
cannot be
rotated by hand when
YES
disconnecting the
connector from the
fan motor.
NO
Resistance
between the fan
motor power supply cable
YES
terminal and the motor
frame (metallic part) is
less than
1 M:.
NO
CHECK 16
Check for the connector (power
supply cable) of the fan motor.
Resistance
between U, V, W
phases of the fan motor
power supply cable has lost
balance or short circuit is
caused between U, V,
W phases.
NO
Turn ON the power supply to check for the HAP lamps on the fan
PCB.
The HAP
lamp on the fan
PCB does not blink.
NO
U V W
(Red) (White) (Black)
{ { {
YES
YES
SiUS372201EB
Replace the relevant fan motor
(M1F, M2F).
Replace the relevant fan motor
(M1F, M2F).
Replace the relevant fan motor
(M1F, M2F).
Replace the fan PCB.
Replace the relevant fan motor.
(M1F, M2F)
Part 6 Service Diagnosis