Operating instructions

43
Checking the outlet temperature sensor (gas fired condensing
combi boiler)
A
1. Pull the leads from outlet temperature
sensor
A
2. Check the sensor resistance and
compare it with the curve.
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
3. Replace the sensor in case of severe
deviation.
Note
Water can leak when replacing the
outlet temperature sensor. Shut off
the cold water supply. Drain the DHW
line and the plate-type heat
exchanger (DHW side).
Troubleshooting
Repairs
(cont.)
5366 836 GB
Service