Troubleshooting by Indication on the Remote Controller SiBE37-701_B
309 Troubleshooting
3.31
“
J5
”
Outdoor Unit: Malfunction of Thermistor (R8T or
R10T) for Suction Pipe
Remote
Controller
Display
J5
Applicable
Models
REYQ8P~48P
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the suction pipe temperature
thermistor.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the suction pipe temperature thermistor is detected.
Supposed
Causes
Defect of thermistor (R8T or R10T) for outdoor unit suction pipe
Defect of outdoor unit PCB (A2P)
Defect of thermistor connection
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P450.
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connector is
connected to X11A
of outdoor unit PCB.
(A2P)
NO
Connect the connector and turn on
again.
Confirm which discharge
thermistor is abnormal using
outdoor unit "monitor mode".
(Refer to P.255~P.256)
Resistance is normal
when measured after dis-
connecting the thermistor
(R8T or R10T) from the
outdoor unit PCB. (1.8k
Ω
to 800k
Ω
)
YES
NO
YES
Replace the thermistor R8T or
R10T.
Replace the outdoor unit PCB
(A2P).
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