Medium
E 27 on Ariston Egis 24 MFFI

Your boiler has detected an issue with the hot water storage tank or its internal temperature readings, leading it to display a safety warning.

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

Tank fault warning

From this model's manual
Verified against the Ariston/Ariston Bravo 24 Mffi 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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Related fault codes

E 28View →E 29View →

All 39 fault codes on the Egis 24 MFFI

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

0506A 01A 03A 36A 37A 39A 40A 41A03E 02E 04E 05E 06E 07E 08E 11E 12E 13E 14E 15E 16E 18E 20E 22E 23E 25E 26E 29E 30E 33E 34E 35E 36E 37E 38E02E04

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