Daikin Altherma EBLQ011CA3V3 - Page 83

2 Components
Service manual
83
EBLQ+EDLQ011~016CAV3+W1 + EBLQ+EDLQ011~016CA3V3+W1
+ EK(2)CB07CAV3 + EKMBUHCA3V3+9W1
Daikin Altherma – Monobloc
ESIE18-04 – 2019.02
Type 1 thermistor
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
–9
–8
–7
–6
–5
–4
–3
–2
–1
106.03
100.41
95.14
90.17
85.49
81.08
76.93
73.01
69.32
21
22
23
24
25
26
27
28
29
23.91
22.85
21.85
20.90
20.00
19.14
18.32
17.54
16.80
51
52
53
54
55
56
57
58
59
6.91
6.65
6.41
6.65
6.41
6.18
5.95
5.74
5.14
0 65.84 30 16.10 60 4.87
1
2
3
4
5
6
7
8
9
62.54
59.43
56.49
53.71
51.09
48.61
46.26
44.05
41.95
31
32
33
34
35
36
37
38
39
15.43
14.79
14.18
13.59
13.04
12.51
12.01
11.52
11.06
61
62
63
64
65
66
67
68
69
4.70
4.54
4.38
4.23
4.08
3.94
3.81
3.68
3.56
4 Disconnect the thermistor connector from the appropriate PCB.
5 Measure the resistance between the appropriate pins of the
thermistor connector.
6 Check that the measured resistance value matches the
resistance determined through the measured temperature
(earlier step in the procedure). E.g. R1T thermistor:
▪ Measured temperature with contact thermometer: 23.1°C,
▪ Resistance value determined through temperature (using the
table for type 1 thermistors):
Resistance at 23°C: 21.85kΩ,
Resistance at 24°C: 20.90kΩ,
▪ Disconnect connector and measure resistance between X11
pin 1‑2:
Measured resistance: 21.86kΩ,
▪ Measured resistance value is inside the range. R1T
thermistor passes the check.
INFORMATION
All thermistors have a resistance tolerance of 5%.
INFORMATION
The user interface allows to monitor most thermistors.
If the measured resistance value matches the resistance
determined through the measured temperature, but the
temperature for the corresponding thermistor is NOT
correct on the user interface display, replace the applicable
PCB.
Does the measured resistance
of the thermistor match with
the temperature determined
resistance?
Action
Yes Thermistor is OK. Return to the
troubleshooting of the specific
error and continue with the next
procedure.
No Replace the specific thermistor,
see "Repair procedures"on
page83.
Repair procedures
To remove the thermistor
Prerequisite: Turn OFF the unit via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Remove the required plate work, see "2.19 Plate
work"on page77.
1 Locate the thermistor that needs to be removed.
2 Cut the tie straps that fix the insulation and the thermistor wire.
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