Daikin Super Multi Plus E-Series - Malfunction of Discharge Pipe Thermistor (R2 T)

SiEN18-622 Troubleshooting for Outdoor Unit
Troubleshooting 371
7.10 Malfunction of Discharge Pipe Thermistor (R2T)
Remote Control
Display
J3
Applicable
Models
AII outdoor unit models
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 (R2T) for outdoor unit discharge pipe
 Defect of outdoor unit PCB (A1P)
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P407.
(V3072)
Caution
NO
NO
YES
YES
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Connector is
connected to
outdoor unit PC
board (A1P).
Connect the thermistor and turn
on again.
Replace the thermistor (R2T).
Replace outdoor unit PC board
(A1P).
Resistance
is normal when
measured after
disconnecting the
thermistor R2T from the
outdoor unit PC
board. (5.0kΩ~
640KΩ)