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Components
Service manual
109
RXQ25+3 3 3
35AMV1B
Split Sensira R32 BBOP
ESIE21-16 – 2022.02
Is the thermistor correctly installed
(thermal contact between the
thermistor and the piping)?
Action
Yes
Perform an electrical check of the
specific thermistor, see
108].
No
Correctly install the thermistor, see
To perform an electrical check of the specific thermistor
1
First perform a mechanical check of the thermistor, see
108].
2
Locate the thermistor.
INFORMATION
Remove the thermistor from its holder if not reachable with a contact thermometer.
3
Measure the temperature using a contact thermometer.
Name
Symbol
Location
(PCB)
Connector
(pins)
Inter-
mediate
connector
(pins)
Referen
ce
(table)
Air
thermistor
R1T
Main (O/U)
S90:1‑2
-
A
Heat
exchanger
thermistor
R2T
Main (O/U)
S90:3‑4
-
A
Discharge
pipe
thermistor
R3T
Main (O/U)
S90:5‑6
-
A
Indoor unit
air (room)
thermistor
R1T
Display PCB
on main
PCB (I/U)
S26:1‑2
S27:1‑2 (on
display PCB)
B
Heat
exchanger
thermistor
R2T
Main (I/U)
S32:1‑2
-
A
4
Determine the thermistor resistance that matches the measured
temperature.
Thermistor – Table A
T °C
kΩ
T °C
kΩ
T °C
kΩ
T °C
kΩ
–20
197.81
10
39.96
40
10.63
70
3.44