Daikin R71FUV1 Service Manual page 156

Troubleshooting by Remote Controller
Troubleshooting
Caution
Is protection
HPS connected to
outdoor unit
PCB?
YES
Turn OFF the power.
Wait 2 to 3 minutes after
compressor stops
operating, then check the
following.
Is there
continuity in
protection HPS?
YES
Is high
pressure
abnormally high during
operation? (∗1)
NO
Note:
∗1. HPS activating value is approximately 3.0 MPa.
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
NO
YES
Si20-701_B
Correct the
connection.
Replace the
open-circuit HPS.
Defective
refrigerant
system.
Replace the
outdoor unit
PCB.
149