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Viessmann Vitodens 300 - Page 86

Viessmann Vitodens 300
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2. Test the resistance of the outside
temperature sensor across term-
inals X3.1 and X3.2 on the discon-
nected plug and compare with the
curve.
3. Where actual values strongly devi-
ate from the curve values, discon-
nect the wires at the sensor and
repeat test di rectly at the sensor.
4. Depending on the result, replace
cable or outsi de temperature se n-
sor.
Repairs (cont.)
86
Troubleshooting
5692 537 GB

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