Troubleshooting by Indication on the Remote Controller SiUS39-602
156 Troubleshooting
2.25
“
J3
”
Outdoor Unit: Malfunction of Discharge Pipe
Thermistor (R31~32T)
Remote
Controller
Display
J3
Applicable
Models
REYQ72M, 96M
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by discharge pipe temperature
thermistor.
Malfunction
Decision
Conditions
When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Supposed
Causes
Defect of thermistor (R31T, R32T) for outdoor unit discharge pipe
Defect of outdoor unit PC board (A1P)
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
(V3072)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Resistance
is normal when
measured after
disconnecting the thermistor
R31, 32T from the outdoor
unit PC board.
(3.5kΩ~
400kΩ)
Replace outdoor unit PC board
(A1P).
Connect the thermistor and turn
on again.
NO
NO
Replace the thermistor (R31, 32T)
YES
YES
Connector
is connected to X34A
of outdoor unit
PC board
(A1P).
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