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BoilerCodes
E104
Baxi fault code

Baxi E104: faulty Safety Assist PCB

Engineer only

Baxi describes E104 on Platinum, Duo-tec, EcoBlue, Megaflo, Assure, Main Eco and original 600/800 boilers as: faulty Safety Assist PCB.

What you can safely do

There is nothing you can safely do yourself with this one. Leave the boiler off and book an engineer.

Call a Gas Safe engineer if

  • Book a Gas Safe registered engineer.
Find a Gas Safe engineer near you Opens the official Gas Safe Register search.

Applies to: Platinum, Duo-tec, EcoBlue, Megaflo, Assure, Main Eco and original 600/800. Codes can differ between models, so check your manual.

What E104 means on each Baxi model

From Baxi's own fault tables. Your model name is usually on the front of the boiler or in the user manual.

ModelMeaning
Platinum, Duo-tec, EcoBlue, Megaflo, Assure, Main Eco and original 600/800Faulty Safety Assist PCB

Common questions about Baxi E104

Can I fix Baxi E104 myself?

No. It needs a Gas Safe registered engineer to diagnose. Tell them the exact code and your boiler's model name.

Nearby Baxi codes

See all 97 Baxi codes

Sources