Daikin VRVII Manual page 129

B
CHECK 17
Check fan motor
connector (signal wire)
The
signal wire
short circuits
between Vcc and
GND and between
UVW and
GND.
NO
CHECK 16
CHECK 17
124
Troubleshooting by Indication on the Remote Controller
YES
Refer to P.378.
Refer to P.379.
Replace the
corresponding
fan motor.
Replace the
PCB.