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Components
Service manual
193
RXM20~71R(9) + ARXM25~71R(9) + FTXM20~71R + ATXM25~50R +
FVXM25~50A
Split New Perfera R32
ESIE20-11B – 2022.02
Wall mounted indoor units
Name
Symbol
Location
(PCB)
Connector
(pins)
Inter-
mediate
connector
(pins)
Referen
ce
(table)
Indoor unit
air (room)
thermistor
R1T
Display PCB
A3P on
main PCB (I/
U)
S800:5‑11
S27:1‑2 on
display PCB
B
Heat
exchanger
thermistor
R2T
Main (I/U)
S501:1‑2
-
A
Floor standing indoor units
Name
Symbol
Location
(PCB)
Connector
(pins)
Inter-
mediate
connector
(pins)
Referen
ce
(table)
Heat
exchanger
thermistor
R1T
Main (I/U)
S501:1‑2
-
A
Indoor unit
air (room)
thermistor
R2T
Main (I/U)
S501:3‑4
-
A
Humidity
thermistor
R3T
Humidity
sensor PCB
A5P on
main PCB (I/
U)
S600
CN on A5P
-
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
–19
–18
–17
–16
–15
–14
–13
–12
–11
186.53
175.97
166.07
156.80
148.10
139.94
132.28
125.09
118.34
11
12
13
14
15
16
17
18
19
38.08
36.30
34.62
33.02
31.50
30.06
28.70
27.41
26.18
41
42
43
44
45
46
47
48
49
10.21
9.81
9.42
9.06
8.71
8.37
8.05
7.75
7.46
71
72
73
74
75
76
77
78
79
3.32
3.21
3.11
3.01
2.91
2.82
2.72
2.64
2.55
–10
111.99
20
25.01
50
7.18
80
2.47
