Daikin R48NUY2S - Page 239

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