Medium
5P5 on Ariston Alteas One

Your boiler is struggling to detect a consistent supply of gas, which may cause it to fail to ignite or cut out during use.

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

Low gas pressure fault (non-blocking)

From this model's manual
Verified against the Ariston Alteas One installation & service manual, page 37.
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

Check that your gas meter has credit (if using a pre-payment meter).Ensure your external gas emergency control valve is fully open.Try to relight other gas appliances, such as a hob, to see if the gas supply is active throughout the home.

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