Medium
Er07 on Biasi ActivA 25C

Your boiler is struggling to accurately measure the temperature of your hot water, which means it has stopped providing hot water to prevent overheating.

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

Faulty d.h.w. temperature probe NTC

From this model's manual
Verified against the Biasi/Biasi Activa Service Manual July 2009 Pdf 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

Er 06View →Er 08View →

All 17 fault codes on the ActivA 25C

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

E01E23Er01Er02Er03Er04Er05Er06Er08Er09Er10Er11Er14Er14+RESETEr99Li01

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