J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R3T) - Daikin R-410A Service Manual

Troubleshooting by Indication on the Remote Controller
4.22 "J3" Outdoor Unit: Malfunction of Discharge Pipe
Thermistor (R3T)
J3
Remote
Controller
Display
Applicable
AII outdoor unit models
Models
Method of Malfunction is detected from the temperature detected by discharge pipe temperature
Malfunction thermistor.
Detection
Malfunction
When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Decision
Conditions
! Defect of thermistor (R3T) for outdoor unit discharge pipe
Supposed
! Defect of outdoor unit PC board (A1P)
Causes
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P198.
136
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
R3T from the outdoor
unit PC board.
(3.5kΩ~
400kΩ)
YES
NO
NO
SiBE39-402A
Connect the thermistor and turn
on again.
Replace the thermistor (R3T)
Replace outdoor unit PC board
A1P.
Troubleshooting
(V3072)