Boiler temperature sensor
1. Pull the leads from boiler tempera-
ture sensor A and measure the
resistance.
2. Check the sensor resistance and
compare actual values with the
curve.
3. In case of severe deviation, drain
boiler on the primary side (see
page 71) and replace the sensor.
Gefahr
The boiler temperature sen-
sor is immersed in the hea-
ting water(risk of scalding).
Drain the boiler before repla-
cing the sensor.
To Next Page