BoilerFaultCodesAriston E 10 Fault Code
Also written as E10 — same fault.
The Ariston E 10 fault code means: your boiler has stopped heating because a safety sensor has detected that your underfloor heating system is getting too hot or there is a break in the connection to its thermostat.. It appears on 5 Ariston models in our database.
Technical description: Contact open in the floor overheat safety device circuit (Flora room thermostat)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Ariston models that show the E 10 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ariston E 10 fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026