Installation Instructions

54
Checking the outlet temperature sensor (gas condensing combi
boiler)
A
1. Pull 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 the 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 heat exchanger
(DHW side).
Troubleshooting
Repairs
(cont.)
5609 059 GB