Boiler fault code

Boiler faults: guides by brand and model

Start with the model.

The same code can change meaning between ranges. Choose the full name of your boiler to consult its documented alerts and prepare a service without disassembling the equipment.

Three pieces of information that prevent confusion

  1. Brand and range

    For example, Baxi Neodens iPlus is not Neodens Plus ECO.

  2. Full version

    Keep suffixes like AS/2, CS/1, or CF/1 and the country variant of the PCB.

  3. Exact code

    Copy letters, dots, and all digits. Do not automatically convert F.028 into an entry from another range.

Baxi boiler faults

Faults of Cointra boilers

Ferroli boiler faults

Boiler faults Hermann

Protherm boiler faults

Vaillant boiler faults

Boiler faults for Wolf

  • Wolf CGB-2K

    20 and 24 · meaning of codes and consulted manual.

  • Wolf FGB-K

    24, 28 and 35 · meaning of fault codes and consulted manual.

Faults of Saunier Duval boilers

More models with fault guide

Find other guides by model. Check the full name of your boiler and the sources cited by each article before interpreting a warning.

Ariston

Baxi

Chaffoteaux

Cointra

Ferroli

Immergas

Junkers

Saunier Duval

Vaillant

Models that need to confirm their documentation

Not all commercial variants can be identified with the found manual. In these cases, we do not publish a code table due to similarity with another model.

Repair, maintain or replace

If the warning persists, provide the code, model, and symptom to consult a repairFor preventive operations, consult boiler maintenanceIf you are considering replacing it, compare. new boilers and the scope of the installationa code alone does not determine the purchase.

Guides from other generations

The blog also retains documentation for previous equipment. Baxi Neodens Plus ECOAlways check the model in the guide before applying its information.

From reading to action

What do you need next?

Resolve a faultHave the model, code, symptoms and location ready when enquiring about diagnosis.Maintain the installationCheck the maintenance scope and inclusions before booking.Compare new boilersView actual equipment and prices. Equipment purchase and installation are separate services.