Medium
E07 on Biasi ActivA 18S

Your boiler's hot water sensor has malfunctioned or developed a wiring fault, meaning it cannot accurately measure the temperature of the water coming out of your taps.

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

D.h.w. temperature probe NTC fault

Shared across the range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s 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

E08View →E06View →

All 12 fault codes on the ActivA 18S

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

E02E03E04E05E06E08E09E10E14E15Er99

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