Medium
E80 on Ariston ACO 27 MFFI

Your boiler has lost communication with the wall-mounted room thermostat, meaning it cannot properly read your home's temperature.

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

Remote Control CLIMA MANAGER room sensor in open circuit or short circuit

From this model's manual
Verified against the Ariston/Ariston Genus Premium Combi 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

E81View →E82View →

All 24 fault codes on the ACO 27 MFFI

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

A01A02A03A07A33A97A98A99E04E05E06E07E08E09E10E20E30E31E33E34E94E95E99

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