Low
Er08 on Biasi ActivA 25C

Your boiler is having trouble reading the outside temperature from a weather sensor, which may cause your heating system to run less efficiently.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

External temp. probe - check External temp. probe

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

Er09View →

All 17 fault codes on the ActivA 25C

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

E01E23Er01Er02Er03Er04Er05Er06Er07Er09Er10Er11Er14Er14+RESETEr99Li01

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