BoilerFaultCodesYour heat pump has shut down because a specific part of its motor or power electronics is drawing too much electricity.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Inverter High Current
What causes this fault?
This fault occurs when the internal electrical safety systems detect a power surge or excessive current being drawn by the heat pump's motor. It is usually caused by a failure in the electronic control board or an internal electrical fault within the compressor itself, which forces the system to shut down to prevent further damage. The system essentially blows a virtual fuse because the components are working harder than they are safely designed to.
This fault can be more frequent during extreme summer or winter temperatures when the compressor is required to run at its maximum speed for extended periods.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like L11 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
Affiliate links — we may earn a commission at no extra cost to you.