Daikin R71FUV1 Service Manual page 91

Si20-701_B
Troubleshooting
Caution
Is
the unit a
cassette, corner or
built-in type?
Is a
drain pump
connected to the
indoor unit
PCB?
Does
the drain pump
work after restarting
operation?
Is the
drain water
level abnormally
high?
A
84
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
YES
optional drain pump
NO
short circuit
YES
connector connected
on the indoor unit
continuity of the
short circuit connector.
continuity?
NO
YES
"emergency"
and check the
voltage of the drain
pump connector. 220-
YES
NO
Troubleshooting by Remote Controller
Is the
installed?
NO
Is the
PCB?
YES
Check the
Is there
YES
Set to
240 VAC?
YES
Connect the
drain pump.
NO
Connect the
short circuit
connector.
NO
Replace the
short circuit
connector.
Replace the
indoor unit PCB.
NO
Replace the
indoor unit PCB.
Replace the
drain pump.
Defective drain
system