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Danielle BondAug 3, 2025
What to do if the Viessmann Dekamatik-M1 Control Systems burner doesn't activate and the red light is on?
- AAlexandra MillerAug 3, 2025
If the Viessmann Control Systems burner doesn't activate and a red light is on, try pressing the reset button on the burner to restart it. If it still doesn't work, it is best to contact a heating contractor for assistance.