Daikin VRV II-Q RQYQ8-48PY1B Service Manual page 129

SiBE341027
Troubleshooting
Note:
*1: Compare the resistance value of discharge pipe thermistor and the value based on the
Service Diagnosis
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Connect the service checker.
Reset the operation and start
operation again.
Is the discharge
pipe thermistor
property normal?
(*1)
YES
Service Checker
Connect the service checker to compare the
temperature of discharge pipe by using service
checker with actual measurement value of discharge
pipe thermistor. CHECK 11
Is the temperature of
discharge pipe by using
service checker same with
actual measurement value
of discharge pipe
thermistor?
YES
· Discharge pipe thermistor is normal and the
temperature detection of the outdoor unit main PCB
is also normal.
· Actually the temperature of discharge pipe is high.
CHECK 3 Remove the factor of overheat operation.
CHECK 3 Refer to P.181
Refer to P.190
CHECK 11
surface thermometer.
Troubleshooting by Remote Controller
NO
NO
Replace the discharge pipe
thermistor.
Replace the outdoor unit
main PCB (A1P).
119