Operating instructions

2. Check the sensor resistance and
compare actual values with the
curve.
3. Replac e the sensor in ca se of
severe deviation.
Danger
The boiler temperature sen-
sor is immersed in the heat-
ing water (risk of scalding).
Drain the boiler before repla-
cing the sensor.
Checking loading temperature sensor
1. Pull the cables off loading tempera-
ture sensor A.
2. Check the sensor resistance and
compare actual values with the
curve.
Repairs (cont.)
86
Troubleshooting
5692 548 GB