Your boiler has detected an electrical safety issue where its internal components are drawing too much power, causing it to shut down to prevent damage.

Overcurrent Protection Error

What causes this fault?

This fault occurs when the heat pump’s internal sensors detect an electrical current that is too high, causing the system to shut down to prevent a fire or permanent damage. The most common reasons are a malfunctioning inverter board that can no longer regulate power or a mechanical failure in the compressor or fan motor that causes them to pull excessive electricity.