Daikin RXYQ96PYDN Service Manual page 367

Troubleshooting by Indication on the Remote Controller
C4
3.9 Indoor Unit: Malfunction of Thermistor (R2T) for Heat
Exchanger
C4
Remote
Controller
Display
Applicable
All indoor unit models
Models
Method of
M
Malfunction Temperature of the heat exchanger thermistor.
Detection
Malfunction
When the heat exchanger thermistor becomes disconnected or shorted while the unit is running.
Decision
Conditions
Supposed
Causes
Troubleshooting
∗ Refer to the Thermistor Resistance / Temperature Characteristics table on Page 523.
352
Defect of thermistor (R2T) for liquid pipe
Defect of indoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Remove the thermistor from
the indoor unit PC board, and
then insert it again.
Is the
thermistor normal?
NO
Remove the thermistor from
the indoor unit PC board, and
then make resistance
measurement of the thermistor
using a multiple meter.
∗
5 kΩ to 90 kΩ
YES
YES
NO
SiUS34-801A_b
Normal (The malfunction is
caused by faulty contact.)
Replace the thermistor (R2T).
Replace the indoor unit PC board.
Troubleshooting