H9" Outdoor Unit: Malfunction Of Thermistor For Outdoor Air (R1T) - Daikin R410As Service Manual

Si39-302
2.23 " H9 " Outdoor Unit:
Air (R1T)
H9
Remote
Controller
Display
Applicable RXYQ5~48M
Models
Method of The abnormal detection is based on current detected by current sensor.
Malfunction
Detection
Malfunction When the outside air temperature sensor has short circuit or open circuit.
Decision
Conditions
!
Supposed
!
Causes
Troubleshooting
The alarm indicator is displayed when the fan only is being used also.
∗
2: Refer to thermistor resistance / temperature characteristics table on P280.
Troubleshooting
Malfunction of Thermistor for Outdoor
Defect of thermistor (R1T) for outdoor air
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 X44A of
outdoor PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
(R1T) from the outdoor
unit PC board.
(3.5kΩ~
360kΩ)
YES
Troubleshooting by Indication on the Remote Controller
NO
NO
Connect the thermistor and turn
on again.
Replace the thermistor (R1T)
Replace outdoor unit PC board
A1P.
(V3070)
183