Daikin VRV III RXYQ5-54PY1 Service Manual page 256

Si34-601A
Troubleshooting
Note: Refer check 1 and 2 to P.311.
Troubleshooting
A
Check 1
Check for the fan motor
connector (Power supply cable)
Resistance
of the U, V, and W
phases of the fan motor
has got imbalanced or short
circuits have been established
amoung the U, V,
and W
phases.
NO
Check 2
Check for the fan motor
connector (Signal cable)
Has a
short circuit been
established between
the fan motor signal cables
Vcc and GND, and UVW
and GND,
respectively?
NO
Turn ON the power supply.
The LED
(HAP) on the
compressor inverter
PCB is blinking, but the LED
(HAP) on the fan inverter
PCB is not
blinking.
NO
Troubleshooting by Indication on the Remote Controller
YES
YES
YES
Replace the outdoor unit fan
motor.
Replace the outdoor unit fan
motor.
Replace the fan inverter
PCB.
Replace the outdoor unit fan
motor.
(V3077)
245