Daikin R71FUV1 Service Manual page 228

Troubleshooting by Remote Controller
Troubleshooting
Caution
Check for the installation
conditions.
Is the stop
valve open?
YES
CHECK 4
High pressure
is too high.
NO
CHECK 4
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
Refer to P.464.
Si20-701_B
Open the stop
valve.
Correct the high
pressure.
• In cooling
operation: Dirty
outdoor unit
heat exchanger
• In heating
operation: Dirty
indoor unit heat
exchanger
• Excessive
charging of
refrigerant
Replace the
outdoor unit
PCB.
221