Daikin VRV II RXYQ5MY1B Service Manual page 205

Troubleshooting by Indication on the Remote Controller
Troubleshooting
Note: Refer check 8, 9 and 12 to P.255
194
1A
Check No. 12
Check on pulse input of
position signal of fan inverter
PCB
Is the LED NO
(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
NO
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 NO
between Vcc and UVW,
and GND and UVW
balanced?
YES
~
256.
SiE39-404
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