Daikin VRV II RXYQ5MATL Service Manual page 202

Si39-504
Troubleshooting
Note: Refer check 1, 2 and 3 to P.251
Troubleshooting
1A
Check No. 1
Check on pulse input of
position signal of fan inverter
PC board
Is the LED
(HAP) on fan inverter
PC board blinking?
YES
Check No. 2
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. 3
Check on connector of fan
motor (Signal wire)
Is the
resistance value
between Vcc and UVW,
and GND and UVW
balanced?
YES
Troubleshooting by Indication on the Remote Controller
NO
NO
NO
~
252.
Replace the fan inverter PC
board.
Replace the fan motor of
outdoor unit.
Replace the fan motor of
outdoor unit.
Replace the fan inverter PC
board.
(V3077)
191