Daikin R71FUV1 Service Manual page 235

Si20-701_B
Remote Controller Display
H3
Applicable Models
RZ(Y)
Method of Error Detection
The protection device circuit checks continuity in the high
pressure switch.
Error Decision Conditions
When there is no continuity in the high pressure switch
during compressor non-operating period.
Supposed Causes
Defective high pressure switch
Open circuit in high pressure switch harness
Defective connection of high pressure switch
connector
Defective outdoor unit PCB.
Troubleshooting
Caution
Is
protection HPS
connector connected to
outdoor unit
PCB?
Wait 2 to 3 minutes after
the unit stops operating,
then check the following.
Is there
continuity in protection
HPS?
228
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
NO
YES
NO
YES
Troubleshooting by Remote Controller
Correct the
connection.
Replace the
open-circuit HPS.
Replace the
outdoor unit
PCB.