Daikin FTXP20-71L Service Manual page 133

Repair procedures
To remove the thermistor
ATXP20~35 + FTXP20~71 + ARXP20~35 + RXP20~71
Split Comfora R32
ESIE18-01E – 2023.01
8 Disconnect the thermistor from the intermediate connector and measure the
resistance of the thermistor (between the appropriate pins of the connector).
Does the measured resistance of the
thermistor match with the
temperature determined resistance?
Yes
No
Indoor unit air (room) thermistor
As the indoor unit air (room) thermistor is located on the display PCB, remove the
display PCB as described in the steps below:
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Disconnect the connector from the display PCB.
2 Press the latches to unlock and remove the display PCB from the unit.
3 To install the
4
procedures" [ 133].
Other refrigerant side thermistors
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see
1 Locate the thermistor that needs to be removed.
2 Remove the thermistor as follows:
▪ For outdoor unit air (ambient) thermistor:
Remove the thermistor from the heat exchanger grille recess.
Remove the protection tube.
▪ For refrigerant piping thermistors:
- Cut the tie straps that fix the insulation and the thermistor wire.
- Cut and remove the insulation.
- Pull the clip that fixes the thermistor.
- Remove the thermistor from the thermistor holder.
Action
Correct the wiring between the
thermistor connector on the PCB and
the intermediate connector, see
"6.2 Wiring
Replace the specific thermistor, see
"Repair
indoor unit air (room)
3 Components
|
4
diagram" [ 159].
4
procedures" [ 133].
4
"3.9 Plate work" [ 111].
thermistor, see
4
"3.9 Plate work" [ 111].
Service manual
"Repair
133