BoilerFaultCodes.com
LCE High Lockout

Your heat pump has stopped working because the internal power system has detected an electrical surge or overload.

Call an engineer soon

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 heat pump's internal electrical controller detects an unsafe surge in electricity flowing to the motor. The most common reasons are a sudden electrical spike during a storm or a mechanical failure within the compressor that makes it too difficult to turn. It acts like a safety fuse, shutting the system down to prevent permanent damage to the expensive internal components.

This fault is slightly more common during the winter months when the heat pump is working at its highest capacity to keep the home warm, putting more strain on the electrical inverter.

Typical repair cost £450-950 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Protect yourself from future repair bills

A boiler cover plan would cover faults like LCE — no call-out fees, no surprises.

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