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Si20-701_B
Troubleshooting by Remote Controller
194
Refer to P.459.
Refer to P.460.
NO
Check for the fan motor
connector (Power supply
cable)
Check for the fan motor
connector (Signal cable)
NO
Has a
short
circuit been
established
between the fan motor
signal cables Vcc and
GND, and UVW and
GND,
respectively?
Resistance
of the U, V, and
W phases of the
fan motor has got
imbalanced or short
circuits have been
established
among the U,
V, and W
phases.
YES
Replace the
outdoor unit fan
motor.
YES
Replace the
outdoor unit fan
motor.
CHECK 2
CHECK 1
B
C
CHECK 1
CHECK 2