Daikin VRV III REYQ8PY1 Service Manual page 275

Troubleshooting by Indication on the Remote Controller
Troubleshooting
∗
264
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Connect the service checker.
Press reset and start operation
again.
Check if
discharge pipe
thermister property is
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 thermister (Refer to ∗1).
Check if
temperature of
discharge pipe by using
service checker is the same with
actual measurement value
of discharge pipe
thermister.
· Discharge pipe thermister is normal and the temperature
detection of the main PC board is also normal.
· Actually the temperature of discharge
Check 3 Remove the factor of overheat operation
referring to P348.
∗1: Compare the resistance value of discharge pipe thermister and the value based on the surface
thermometer.
(Refer to P417 for the temperature of thermister and the resistance property)
Refer to "Thermistor Resistance / Temperature Characteristics" table on P417.
NO
NO
pipe is high.
Si37-701
Replace discharge pipe thermister.
Replace main PC board ( A1P).
Troubleshooting