Daikin REYQ72 Serveice Manual page 159

Troubleshooting by Indication on the Remote Controller
Troubleshooting
Refer check 8, 9 and 12 to P.212
148
1A
Check No. 12
Check on pulse input of
position signal of fan inverter
PCB
Is the LED
(HAP) on fan inverter
PCB blinking?
YES
Check No. 8
Check on connector of fan
motor (Power supply cable)
Are the
resistance values
between phases of
U, V, W balanced?
Is there any short
circuiting between
phases of
U, V, W?
YES
Check No. 9
Check on connector of fan
motor (Signal wire)
Is the
resistance value
between Vcc and UVW,
and GND and UVW
balanced?
YES
NO
NO
NO
~
213.
SiUS39-602
Replace the fan inverter
PCB.
Replace the fan motor of
outdoor unit.
Replace the fan motor of
outdoor unit.
Replace the fan inverter
PCB.
(V3077)
Troubleshooting