Low
E 05 on Ariston Egis 24 MFFI

Your boiler has detected that the water inside the system is getting too cold and has switched on its internal pump to keep the water moving and prevent freezing.

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

Anti-freeze system, pump only

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.

DIY fix possible

Ensure power to the boiler remains switched onCheck that the gas supply is activeEnsure the system pressure is between 1.0 and 1.5 barKeep internal doors open if the boiler is in a particularly cold area like a garage

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Related fault codes

E02View →

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 06E 07E 08E 11E 12E 13E 14E 15E 16E 18E 20E 22E 23E 25E 26E 27E 29E 30E 33E 34E 35E 36E 37E 38E02E04

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