Remeha Unstable flame / marginal ignition

Furnace starts but shuts down after a few seconds without showing an error code

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

Weak ignition spark, Incorrect electrode gap, Low gas pressure, Partially blocked burner

Safety first: Gas and ignition components must be serviced by qualified technicians.

Observe ignition: Through the sight glass, observe whether the flame is stable or lifts off and goes out shortly after ignition.
Inspect electrodes: Check ignition and ionisation electrodes for wear, cracks, or incorrect positioning. Adjust or replace as needed.
Clean burner: Remove and clean the burner surface to ensure even gas distribution.
Check gas pressure: A technician should measure inlet and burner pressure and correct any supply issues.

Professional Required 5/5

Ignition Electrode

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