120
Checking the outlet temperature sensor
1.
Pull the leads from outlet temperature
sensor
A
.
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
2.
Check the sensor resistance and
compare it with the curve.
3.
Replace the sensor in case of severe
deviation.
Danger
The outlet temperature sen-
sor is immersed in the DHW
(risk of scalding).
Drain the DHW side of the
boiler before replacing the
sensor.
Troubleshooting
Repairs
(cont.)
5457 552 GB