Low
E00 to E99 on Ariston Clas HE 24

Your boiler is displaying a historical log of the last ten faults that have occurred, rather than a single active error code.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

This parameter allows the last 10 boiler errors flagged to be displayed, indicating the day, month and year.

From this model's manual
Verified against the Ariston Clas He 24 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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Boiler cover options

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