High
E83---086 on Biasi Riva Compact 24S

Your boiler is having trouble switching between heating your radiators and providing hot water because of an electrical fault with an internal valve.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

Three way diverter valve (electric actuator)

Engineer required

This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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