Daikin R71FUV1 Service Manual page 92

Troubleshooting by Remote Controller
A
Is the float
switch connected ?
YES
Remove the float switch,
short circuit, and restart
operation.
Error
displayed again?
YES
Note:
If "A3" is detected by a PCB without X15A, the PCB is
defective.
NO
NO
Si20-701_B
Connect the float
switch.
Replace the float
switch.
Replace the
indoor unit PCB.
85