Daikin R71FUV1 Service Manual page 239

Si20-701_B
Troubleshooting
Caution
Is low
pressure sensor
connector connected
to outdoor unit
PCB?
Turn OFF the power
supply. After 10 minutes,
check the following.
CHECK 5
Is low pressure
abnormally low?
Is there
continuity in
control and protection
low pressure
switch?
CHECK 5
232
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
NO
YES
NO
YES
Refer to P.466.
Troubleshooting by Remote Controller
Connect
correctly.
Correct the
refrigerant pipe.
Replace the low
pressure sensor.
Replace the
outdoor unit
control PCB.