BoilerFaultCodes.com
power High Lockout

Your boiler has lost electrical power and cannot start any heating or hot water functions.

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: If the boiler is not lit it could be a problem with power supply to the boiler switched off or possibly blown a fuse

What causes this fault?

This fault occurs when the boiler is not receiving the electrical current required to operate its internal components. The most common reason is a simple blown 3-amp fuse in the fused spur switch or a tripped circuit breaker in your home's main consumer unit. In more serious cases, it can be caused by a surge that has damaged the boiler's main control board.

Typical repair cost £60-120 (including labour)

DIY fix possible

Check that the boiler's main power switch is turned to the 'ON' position.Inspect your home's main consumer unit (fuse box) to see if a circuit breaker has tripped.Check the fused spur switch (usually near the boiler) and replace the 3-amp fuse if it has blown.

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