Check And Installation; Ntc Sensor Checks - Siemens EH675TK11E Repair Instruction

5

CHECK AND INSTALLATION

5.1

NTC sensor checks

5.1.1 Inductor NTC
Each one of the inductors uses an NTC sensor to control operational
temperature. The inductor NTC is a replaceable part.
5.1.2 Induction module NTC
The temperature of the semiconductor devices is measured by two
NTC sensors that protect the electronics from excessively high
temperatures. These sensors are not replaceable parts.
206_58300000141095_ara_en_k.doc – 04.10.a
5.1.3 NTC sensor conversion table
Temp (ºC) R (KOhm)
10 98.264
11 93.229
12 88.632
13 84.404
14 80.489
15 76.845
16 73.435
17 70.233
18 67.213
19 64.357
20 61.647
21 59.070
22 56.613
23 54.264
24 52.016
25 49.860
5.1.4 Correct position
It is very easy that they could get out of its housing on removing the
glas, on raising the inductor set, on changing an ELIN... etc helped by
the conductive silicone (white paste).
An incorrectly positioned NTC can cause diverse problems:
1- Power loss. On having placed the glas the NTC can push
down the inductor and the distance between the inductor and
cookware increases, giving as a result a power loss.
2- Wrong inductor regulation. If the NTC is not in direct contact
with the glas, the real temperatures are not read.
Temp (ºC) R (KOhm)
26 47.788
27 45.794
28 43.873
29 42.019
30 40.228
31 38.496
32 36.819
33 35.193
34 33.616
35 32.085
36 30.597
37 29.150
38 27.741
39 26.369
40 26.065
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