Ntc Sensor Check - Siemens EH70650 Repair Instructions

7.4

NTC sensor check

7.4.1 NTC of the inductors
Each one of the inductors uses an NTC sensor for monitoring the
operating temperature. The NTC sensor of the inductor is
interchangeable. Conductive grease must be used when replacing
the NTC in order to favour thermal conduction.
7.4.2 NTC of the induction module
The temperature of the semi-conductor devices is measured by two
NTC sensors that protect
temperatures. These sensors cannot be replaced.
7.4.3 Diagram and conversion table of the NTC sensor
Resistencia - Temperatura
25,000
20,000
15,000
10,000
5,000
0,000
206_58300000105199_ara_en_h – 15.03.a
the electronics from excessive
T (ºC)
T in ºC R in ohms T in ºC
10 19,873 26
11 18,946 27
12 18,069 28
13 17,237 29
14 16,447 30
15 15,699 31
16 14,988 32
17 14,314 33
18 13,674 34
19 13,066 35
20 12,488 36
21 11,939 37
22 11,417 38
23 10,921 39
24 10,449 40
25 10,000
R in ohms
9,573
9,166
8,779
8,410
8,059
7,725
7,406
7,101
6,811
6,535
6,271
6,019
5,779
5,549
5,330
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