High
40-60 (ll-ll) on Ariston Genus 30 Plus

Your boiler has lost the internal connection needed to communicate with its controls, which usually indicates an electrical fault or a blown fuse inside the boiler casing.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Wiring problem (or fuse 1.25 A)

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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