Medium
2 05 on Ariston E-Combi One 24

Your boiler is having trouble measuring the temperature of the water coming from your solar thermal system or incoming supply, which can affect how your hot water is heated.

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

DHW In Probe Open Circuit (Solare temp. probe)

From this model's manual
Verified against the Ariston E Combi One 24 installation & service manual, page 38.
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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