Daikin R71FUV1 Service Manual page 113

Si20-701_B
A
Is the
water drainage
system normal?
YES
∗ In FHY, FAY, and FHQ problems
can also occur in the optional
drain pump.
Is drain
pump installed?
YES
Is drain
pump normal?
YES
Is
amount of
circulated drain
water excessive after
pump stops
operation?
NO
Does
drain water
flow in reverse during
non-operation?
NO
106
Troubleshooting by Remote Controller
NO
NO
NO
YES
YES
Clogged drain
water discharge
system
Clogged drain
pump
Defective float
switch
Replace the
indoor unit PCB.
Check to see if
drain-up height
and horizontal
pipe length
exceed
specifications.
Check the
jumper
connector.
Check the drain
pump and the
drain pipe.
Check the water
drainage system.
Check to see if
drain-up height
and horizontal
pipe length
exceed
specifications.
Defective trap in
water drainage
system
Replace the
indoor unit PCB.