BoilerFaultCodesYour heat pump has shut down because a power component is drawing too much electricity, likely due to a blockage or a part wearing out.
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 components detect a sudden spike in power consumption, triggering an immediate shutdown to prevent a fire or permanent damage. The most common reasons are a blockage in the refrigeration circuit causing the pump to strain, or a mechanical failure within the compressor itself. It can also be caused by an electrical short-circuit in the control boards that drive the system.
This fault is more frequent during the first cold snaps of winter, as the system has to work at its maximum capacity and any struggling components are likely to fail under the increased load.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like L12 — no call-out fees, no surprises.
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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.
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