2.25 "J3" Outdoor Unit; J3" Outdoor Unit: Malfunction Of Discharge Pipe Thermistor (R31~33T) - Daikin RXYQ72 Serivce Manual

Troubleshooting by Indication on the Remote Controller

2.25 "J3" Outdoor Unit:

Thermistor (R31~33T)
J3
Remote
Controller
Display
Applicable RXYQ72M, 96M
Models
Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor.
Malfunction
Detection
Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Decision
Conditions
Supposed
Causes
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
∗
152
Malfunction of Discharge Pipe
Defect of thermistor (R31T, R32T) for outdoor unit discharge pipe
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 X34A
of outdoor unit
PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
R31, 32T from the outdoor
unit PC board.
(3.5kΩ~
400kΩ)
1
*
YES
1: Refer to thermistor resistance / temperature characteristics table on P240.
NO
NO
SiUS39-601
Connect the thermistor and turn
on again.
Replace the thermistor (R31, 32T)
Replace outdoor unit PC board
(A1P).
Troubleshooting
(V3072)