Daikin CMSQ200A7W1B Service Manual page 172

SiBE28-805
Troubleshooting
Note: Refer to
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 PC
board is blinking, but the LED
(HAP) on the fan inverter
PC board is not
blinking.
NO
and
CHECK 1 CHECK 2
Troubleshooting by Indication on the Remote Controller
YES
YES
YES
on P.226.
Replace the outdoor unit fan
motor.
Replace the outdoor unit fan
motor.
Replace the fan inverter PC
board.
Replace the outdoor unit fan
motor.
161