Weishaupt Corrosion due to condensate or flue gas leakage

Corrosion or rust visible around burner flange and combustion chamber opening

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Leaking burner door gasket, Incorrect flue gas routing, Prolonged low-temperature operation causing condensation

Safety: Corrosion can weaken structural parts; have the unit inspected.

Steps:

Gasket check: Inspect the burner door gasket for cracks or flattening. Replace if compromised.
Operating temperature: Ensure the system is not consistently running at too low a return temperature (for non-condensing units), which can cause condensation.

Severe corrosion may require replacement of the burner door or heat exchanger.

Hard 4/5

Burner Door Gasket

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