J6" Outdoor Unit: Malfunction Of Thermistor (R4T) For; Outdoor Unit Heat Exchanger - Daikin RXMQ4·5·6PVE Service Manual

Troubleshooting by Indication on the Remote Controller
3.25 " J6 " Outdoor Unit:

Outdoor Unit Heat Exchanger

J6
Remote
Controller
Display
Applicable RX(Y)MQ4~6P
Models
Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor.
Malfunction
Detection
Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P231.
160
Malfunction of Thermistor (R4T) for
Defect of thermistor (R4T) for outdoor unit heat exchanger
Defect of outdoor unit PC board (A1P)
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts damage may be occurred.
Connector
is connected to outdoor
unit PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R7T) from the outdoor
unit PC board.
(3.5kΩ~
360kΩ)
YES
NO
NO
Si34-603
Connect the thermistor and turn
on again.
Replace the thermistor (R7T).
Replace outdoor unit PC board
(A1P).
(V3074)
Troubleshooting