78
100
10
-15
-10
-5 10 20 30
Temperature in °C
4
6
8
20
40
60
80
Resistance in kΩ
0
3. Check the sensor resistance and
compare it to the curve.
4. In the event of severe deviation
replace the sensor.
Checking and cleaning the plate heat exchanger
Shut off and drain the boiler on the
heating water and DHW sides.
Note
Residual water may drain from the
plate heat exchanger.
Troubleshooting
Repairs
(cont.)
5837146
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