Daikin ALTHERMA HT ERSQ 011 AA - J5 Outdoor Unit: Malfunction of Thermistor (R3 T, R5 T) for Suction Pipe

ESIE09-08A Troubleshooting by Indication on the Remote Controller
Troubleshooting 179
3.28 “J5 ” Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for
Suction Pipe 1, 2
Remote Control
Display
J5
Applicable Models ER*Q 011~016*
Method of
Malfunction
Detection
Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2.
Malfunction
Decision Conditions
When a short circuit or an open circuit in the thermistor for suction pipe 1, 2 are detected.
Supposed Causes  Defect of thermistor (R3T, R5T) for outdoor unit suction pipe
 Defect of outdoor unit PC board (A1P)
Troubleshooting
 Refer to thermistor resistance / temperature characteristics table on P251.
(V3073)
Caution
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
Resistance
is normal when
measured after
disconnecting the thermistor
(R3T, R5T) from the
outdoor unit PC board.
(3.5k~360k)
Replace outdoor unit PC board
(A1P).
Connect the thermistor and turn
on again.
NO
NO
Replace the thermistor (R3T, R5T)
.
YES
YES
Connector of
the thermistor for
suction pipe1, 2 is connected
to X12A of outdoor unit
PC board
(A1P).