Daikin RQYQ140-180PY1, Руководство по обслуживанию, Страница: 140 / 231

Troubleshooting by Remote Controller SiBE341001
131 Troubleshooting
2.17
“
H9
”
Outdoor Unit: Malfunction of Thermistor (R1T) for
Outdoor Air
Remote
Controller
Display
H9
Applicable
Models RQYQ-PY1
RQEQ-PY1
Method of
Malfunction
Detection Malfunction is detected from the temperature detected by the outdoor air thermistor.
Malfunction
Decision
Conditions When the outdoor air temperature thermistor has short circuit or open circuit.
Supposed
Causes
„
Defective outdoor air thermistor connection
„
Defect of outdoor air thermistor (R1T) for outdoor air
„
Defect of outdoor unit PCB (A1P)
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P199.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Check the connection of
connector to X18A of outdoor
PCB (A1P).
Remove the connector for the
thermistor (R1T) from the
outdoor PCB (A1P) and
measure the resistance with a
tester.
Is it normal?
Resistance is normal?
NO
NO
YES
YES
Connect the connector correctly.
Replace the outdoor air thermistor
(R1T).
Replace the outdoor unit PCB
(A1P).