Daikin RQYQ140-180PY1 Service Manual page 133

SiBE341001
Troubleshooting
∗
Troubleshooting
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 thermistor
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 thermistor (Refer to ∗ 1).
Check if temperature of
discharge pipe by using
service checker is the same
with actual measurement
value of discharge pipe
thermistor.
· Discharge pipe thermistor is normal and the
temperature detection of the main PCB is also normal.
· Actually the temperature of discharge pipe is high.
Check 11 Remove the factor of overheat operation
referring to P.199.
∗ 1: Compare the resistance value of discharge pipe thermistor and the value based on the surface
thermometer.
Refer to "Thermistor Resistance / Temperature Characteristics" table on P199.
Troubleshooting by Remote Controller
NO
NO
Replace the discharge pipe
thermistor.
Replace the main PCB
(A1P).
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