2.
Test the resistance of the outside
temperature sensor across term-
inals "X3.1" and "X3.2" on the dis-
connected plug and compare it with
the curve.
3.
Where actual values strongly devi-
ate from the curve values, discon-
nect the wires at the sensor and
repeat test immediately at the sen-
sor.
4.
Subject to result, replace the lead
or the outside temperature sensor.
Checking the boiler water temperature sensor, cylinder tem-
perature sensor or the flow temperature sensor of the low
loss header
Repairs
(cont.)
83
Troubleshooting
5692
673
GB
Summary of Contents for VITODENS 300-W
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