Repair Procedures - Daikin RXM20R Service Manual

4 | Components

4.19.2 Repair procedures

To remove the thermistor
Service manual
196
Does the measured resistance of the
thermistor match with the
temperature determined resistance?
Yes
No
Indoor unit air (room) thermistor
WALL MOUNTED INDOOR UNITS
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 Remove the display panel from the indoor unit.
2 Pull up the bottom of the indication lamp cover.
b
a Indication lamp cover
b Display PCB
3 Remove the display PCB from the back side of the indication lamp cover.
4 Disconnect the connector from the display PCB.
5 To install the indoor unit air (room) thermistor, see
4
procedures" [ 196].
FLOOR STANDING INDOOR UNITS
Procedure is similar as for the outdoor unit air thermistor, see below.
Other refrigerant side thermistors
Prerequisite: Stop the unit operation via the user interface.
Action
Correct the wiring between the
thermistor connector on the PCB and
the intermediate connector, see
"7.2 Wiring
Replace the specific thermistor, see
"4.19.2 Repair
"4.14 Plate
a
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
4
diagram" [ 226].
4
procedures" [ 196].
4
work" [ 153].
"4.19.2 Repair
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02