Low
bb.. on Ariston Genus Premium

Your boiler is notifying you that the burner is currently firing specifically to heat the water inside your external storage cylinder.

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

Storage cylinder, burner on (SYSTEM version)

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

This fault may be fixable without an engineer. Check your manual first.

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All 69 fault codes on the Genus Premium

Seeing a different code? Every code this model can display, in one place.

A17A18A19A20A21A22A33A97A98A99AA0011AA0022AA0033AA0077AA1199AA2200AA2211AA2222AA3333AA9999BOILER SHUTDOWNdd..E 06E 07E 09E 10E 94E 95E04E05E08E20E21E22E23E56E64E66E74E99EE0033EE0044EE0055EE0088EE2200EE2211EE2222EE2233EE5566EE6644EE6666EE7744EE9999L.E.D. GPP/AAPP/LLS 02S 04S 05S 06S 25S 26S 27S 30S 31S 80UU/FFUU/tt

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