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floresaprilSep 23, 2025
What does error code E5 mean on a Viessmann Boiler?
- TTina MccallSep 23, 2025
If your Viessmann Boiler displays error code E5, it indicates a fault with the flame amplifier. To resolve this, replace the control unit.
What does error code E5 mean on a Viessmann Boiler?
If your Viessmann Boiler displays error code E5, it indicates a fault with the flame amplifier. To resolve this, replace the control unit.











