Error code

Viessmann nem alma cihazı All models code 4b

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Meaning

Function of input lH: Room ther- mostat (Vitotrol 100, only for con- stant temperature control units)

Signed-in members see the LED pattern and how to read the code with the remote control on eligible records.

4b:1

Solution steps are not shared for faults that may be dangerous.

No do-it-yourself solution is given for this fault. For your safety, call an authorised service.

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