" Malfunction of Thermistor (R4T) for Outdoor Unit Heat
RXYMQ36 · 48PVJU
Malfunction is detected from the temperature detected by the heat exchanger thermistor.
When a short circuit or an open circuit in the heat exchanger thermistor is detected
Defect of thermistor (R4T) for outdoor unit coil
Defect of outdoor unit PCB (A1P)
Defect of thermistor connection
Be sure to turn off the power switch before connecting or disconnecting the connector, or parts may be damaged.
Confirm which thermistor is abnormal
using outdoor unit "monitor mode".
(Refer to P.105, 106)
connected to X12A of outdoor
unit PCB (A1P).
measured after disconnecting
the thermistor R4T from the
indoor unit PCB.
∗ Refer to "Thermistor Resistance / Temperature Characteristics" table on P.241.
is normal when
Troubleshooting by Indication on the Remote Controller
Connect the connector and turn
Replace the thermistor (R4T).
Replace the outdoor unit PCB