Indoor Heat Exchanger Thermistor (R3T) Abnormality - Daikin Super Multi Plus E-Series FTXG25EV1BW Service Manual

Troubleshooting for SA Indoor Unit
5.7

Indoor Heat Exchanger Thermistor (R3T) Abnormality

C5
Remote
Controller
Display
Method of The temperature detected by indoor heat exchanger thermistor (R3T)
Malfunction
Detection
Malfunction When the indoor heat exchanger thermistor becomes disconnected or shorted while the indoor
unit is running.
Decision
Conditions
Supposed
Causes
Troubleshooting
Check the connection of
connector
Disconnect the thermistor
(R3T) from X17A on the
indoor unit PCB and measure
the resistance.
Refer to "Thermistor Resistance / Temperature Characteristics" table 2 on page 427.
370
Defective thermistor
Defective indoor unit PCB
Disconnection of connector
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
NO
Is it normal?
YES
Is the NO
thermistor normal?
YES
SiBE18-821_C
Connect it correctly.
Replace the thermistor
(R3T).
Replace indoor unit
PCB.
(R13005)
Troubleshooting