Operating instructions

186
Viessmann NTC 10 kΩ (blue ID label)
10
1
10 30 50 70 90 110
Temperature in °C
0.4
0.6
0.8
2
4
6
8
20
Resistance in kΩ
1. Pull corresponding plug.
2. Check the sensor resistance and
compare it with the curve.
3. In the case of severe deviation, check
the installation and replace the sen-
sor if required.
Outside temperature sensor
Viessmann NTC 10 kΩ
100
10
-20 -10 0 10 20 30
Temperature in °C
6
8
20
40
60
80
200
Resistance in kΩ
1.
Pull plug !.
2. Check the sensor resistance across
plug terminals "1" and "2" and com-
pare with the curve.
3. If the results are very different from
the curve, disconnect the wires from
the sensor and repeat the test on the
sensor.
4. Depending on the result, replace the
lead or the outside temperature sen-
sor.
Flue gas temperature sensor
Part no. 7452 531 A service message appears when a limit
entered in the Vitotronic 100 is reached
(see coding address "1F" in group 2).
Components, Vitotronic 100, type GC1B and Vitotronic 300-K
Sensors
(cont.)
5815 091 GB