Low
E08 on Biasi Activa

Your boiler's outside temperature sensor is sending an incorrect signal or has lost connection, meaning the system may not know how hard it needs to work to heat your home.

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.

Technical description

External temperature probe fault (if connected)

Engineer required

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

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Related fault codes

E07View →

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