SiBE18-821_C Troubleshooting for Outdoor Unit
Troubleshooting 395
7.10 Discharge Pipe Thermistor (R2T) Abnormality
Remote
Controller
Display
J3
Method of
Malfunction
Detection
The temperature detected by discharge pipe thermistor determines the error.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the discharge pipe thermistor is detected
Supposed
Causes
Disconnection of thermistor
Defective discharge pipe thermistor (R2T)
Defective main PCB (A1P)
Troubleshooting
Refer to “Thermistor Resistance / Temperature Characteristics” table 3 on page 428.
Is the thermistor
ASSY connected to X12A
on the main PCB
(A1P)?
Is the
resistance
normal when
measured after
disconnecting the
thermistor (R2T)?
(5.0 kΩ ~ 640 kΩ)
Replace the main PCB
(A1P).
(R13026)
Connect the thermistor and
turn on again.
NO
Replace the discharge pipe
thermistor (R2T).
NO
YES
YES
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
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