Your heat pump has detected an electrical overload in the motor system and has shut down to protect its internal circuits.
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 brain of the unit detects that the compressor is trying to draw more electrical power than is safe to handle. This usually happens because there is a mechanical blockage inside the compressor or a serious electrical failure within the control board, causing the system to trip for safety. The most common reason is that the motor is under too much strain to spin properly, often due to internal wear or a faulty connection.
This fault is more common during the peak of winter or during summer heatwaves, as the compressor has to work much harder to move heat during extreme outdoor temperatures.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like LCA — 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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