Low
08E on Biasi Activ A

Your boiler is struggling to read the outdoor temperature, which might cause your heating to run less efficiently or feel slightly out of sync with the weather.

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

Faulty external temp. probe

From this model's manual
Verified against the Biasi/Biasi Bm Biasi Concept 400 20 1 Mfs 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

09EView →

All 31 fault codes on the Activ A

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

01E02E03E04E05E06E09E10E11E14E15E16E17E18EErEr 01Er 02Er 03Er 04Er 05Er 06Er 08Er 09Er 10Er 12Er 14Er 15Er 16Er 17Er 18

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