J6" Outdoor Unit: Malfunction Of Thermistor (R4T) For Outdoor Unit Heat Exchanger - Daikin R-410A Service Manual

Troubleshooting by Indication on the Remote Controller
4.24 "J6" Outdoor Unit: Malfunction of Thermistor (R4T) for
Outdoor Unit Heat Exchanger
J6
Remote
Controller
Display
Applicable
AII outdoor unit models
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
! Defect of thermistor (R4T) for outdoor unit heat exchanger
Supposed
! Defect of outdoor unit PC board (A1P)
Causes
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P198.
138
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
R4T from the outdoor
unit PC board.
(3.5kΩ~
360kΩ)
YES
NO
NO
SiBE39-402A
Connect the thermistor and turn
on again.
Replace the thermistor R4T.
Replace outdoor unit PC board
A1P.
(V3074)
Troubleshooting