Immergas Ignition Sequence Interruption

Furnace fan runs, but burner does not ignite; no error code is displayed.

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

Gas valve not energized, faulty ignition transformer, control board not sending ignition command.

Safety: Work on gas and ignition systems must be performed by a qualified technician.

Steps:

1. Listen for sparking: During start-up, you should hear a rapid ticking sound. If not, the ignition transformer or electrode circuit may be faulty.
2. Check gas supply: Ensure the gas cock is open and other gas appliances are working.
3. Technician tests: Measure voltage to the ignition transformer and gas valve during start-up. Replace faulty components or the PCB as required.

Professional Required 5/5

Ignition Transformer / Ignition Electrode

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