Medium
E18 on ECA Proteus Premix 24 HCH

Your boiler's temperature sensor for hot water has stopped working properly, meaning you may experience cold water or inconsistent temperatures.

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 sensor (NTC) failure

From this model's manual
Verified against the Eca Proteus Premix 24 Hch 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.

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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