LC Low
Your boiler is undergoing a restart process, usually following a fault or power interruption, and is attempting to fire up correctly.
Technical description: Turn power off and on
Typical repair cost: £0-80 (including labour)
DIY fix possible
Switch the power to the boiler off at the fused spur switchWait for 30 secondsSwitch the power back on and wait for the boiler to complete its start-up sequence
Protect yourself from future repair bills
A boiler cover plan would cover faults like LC — no call-out fees, no surprises.
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Parts commonly replaced
- None (usually resolved by a reset)
- Control PCB (if fault persists)
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