Low
8 on Ariston Genus 30 Plus

Your boiler temporarily fires up when you turn off a hot water tap due to a sudden pressure drop in your home's water supply.

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

When cold water tap turned off, the boiler ignites - drop in pressure in the water mains, with consequent water hammer

From this model's manual
Verified against the Ariston/Ariston Genus 30 Plus 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

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All 10 fault codes on the Genus 30 Plus

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

1234567930 40 50 60 70 80

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