Medium
E00 on Ariston Clas HE R

Your boiler has detected an internal error, but this specific code is a placeholder used by the system to log a fault that requires investigation by a professional.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

What the manual says

Manufacturer manual

Error number identifier in error list

From this model's manual
Verified against the Ariston Clas He R installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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