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Vaillant Boiler F67 error code

Flame sensing electronics fault

Safe troubleshooting guidanceManufacturer reference recorded — model-code mapping not independently verified
DISPLAYED CODEF67Vaillant · Boiler
MODEL APPLICABILITY

What does it mean?

The manufacturer identifies F67 as “Flame sensing electronics fault” for the covered boiler models. Code meanings can differ by model, region and platform; this is not proof that a specific part has failed.

Model match: No manufacturer-manual confirmed exact model list is available for this record. Check the model label and official manual.

Check your exact model manual; the same code can mean something else on other platforms.

Manufacturer reference recorded — model-code mapping not independently verified

The source describes the code; the failed part can only be confirmed by testing the appliance.

Open original manufacturer documentation
STEP BY STEP

Safe checks you can try

  1. 01

    If you smell gas, do not operate electrical switches

    If you smell gas, do not operate electrical switches; leave the area and call local gas emergency services.

  2. 02

    If there is no gas smell, only check external indicators…

    If there is no gas smell, only check external indicators permitted in the user manual.

  3. 03

    For repeat ignition/flame faults, do not open the gas valve…

    For repeat ignition/flame faults, do not open the gas valve, combustion chamber or ignition assembly.

Safety and warranty: Meaning may vary by model. Gas combustion, live electrical work and sealed refrigerant circuits require licensed professionals. If you smell gas, leave the area and call emergency services.

PRACTICAL FIX / REPAIR

What a technician would check

An authorised gas technician verifies flame sensing, inlet gas pressure, ignition chain, flue/condensate path and safety interlocks.

How to verify the result

After a successful user-level check, normal operation should resume and the code should not return. If it repeats, a qualified technician should inspect the exact model.

Do not dismantle sealed systems, gas valves or electrical control boards. Warranty conditions vary by country and model.

Independent information website, not an authorised service provider.

Manufacturer source

https://www.vaillant.com.tr/pdf/yogusmaliduvartipiisitmacihazlarimontaj65kw-824586.pdf

Checked on: 2026-11-10. Manufacturer reference recorded — model-code mapping not independently verified