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4
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Components
To perform an electrical check of the external thermistor
Service manual
230
draft – 31/05/2022 15:53
Prerequisite: Remove the required plate work, see
1 Locate the thermistor.
2 Remove the insulation if needed. Check that the thermistor is correctly
installed and that there is thermal contact between the thermistor and the
piping or ambient.
Is the thermistor correctly installed
(thermal contact between the
thermistor and the piping or ambient)?
Yes
No
Prerequisite: First perform a mechanical check of the thermistor, see
4
procedures" [
229].
1 Locate the thermistor:
INFORMATION
Remove the thermistor from its holder if not reachable with a contact thermometer.
2 Measure the temperature using a contact thermometer.
Name
Symbol
External
R6T
indoor or
outdoor
ambient
thermistor
3 Determine the thermistor resistance that matches the measured
temperature.
Thermistor – Table A
T °C
kΩ
T °C
–20
197.81
10
–19
186.53
11
–18
175.97
12
–17
166.07
13
–16
156.80
14
–15
148.10
15
–14
139.94
16
–13
132.28
17
–12
125.09
18
–11
118.34
19
–10
111.99
20
"4.16 Plate
Action
Perform an electrical check of the
specific thermistor, see
procedures" [
Correctly install the thermistor, see
"Repair
procedures" [
Location
Connector
(PCB)
(pins)
Hydro
X22A: 1‑2
kΩ
T °C
kΩ
39.96
40
10.63
38.08
41
10.21
36.30
42
9.81
34.62
43
9.42
33.02
44
9.06
31.50
45
8.71
30.06
46
8.37
28.70
47
8.05
27.41
48
7.75
26.18
49
7.46
25.01
50
7.18
4
work" [
202].
"Checking
4
229].
4
234].
"Checking
Unit
Referen
terminal
ce
(wires)
(table)
X5M: 8-7
A
T °C
kΩ
70
3.44
71
3.32
72
3.21
73
3.11
74
3.01
75
2.91
76
2.82
77
2.72
78
2.64
79
2.55
80
2.47
EBLA04~08E + EDLA04~08E
Daikin Altherma 3 M
ESIE22-09 – 2022.05
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Troubleshooting
