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 directly at the sensor.
4.
Depending on the result, replace
cable or outside temperature sen-
sor.
Repairs
(cont.)
86
Troubleshooting
56
92
550
GB
Summary of Contents for VITODENS 300 WB3A
Page 10: ...Opening the control unit housing 10 5862 570 GB...
Page 14: ...Closing control unit housing and inserting user interface 14 5862 570 GB...
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