Daikin RTSQ20PY1 Service Manual page 268

Troubleshooting by Indication on the Remote Controller
Troubleshooting
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257
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
While in monitor mode, check
the outdoor unit and the
function unit concerned.
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.
YES
· 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 3 Remove the factor of overheat operation
referring to P.340.
*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 P.409.
NO
NO
SiBE31-801_C
Replace the discharge pipe
thermistor.
Replace the main PCB (A1P).
Troubleshooting