BoilerFaultCodes.com
Reset Light (Ignition) High Lockout

Your boiler is unable to light the gas to start the heating process, causing the system to lock out for safety.

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: The appliance fails to ignite during the ignition sequence.

What causes this fault?

This fault occurs when the boiler attempts to start up but cannot successfully establish a flame to heat the water. The most common reasons include a lack of gas supply to the unit, a worn-out spark electrode that can no longer create a light, or a faulty gas valve that isn't opening correctly.

This issue can be more frequent during extreme cold spells if the external gas regulator freezes or if there is a blockage in the flue due to heavy snow or ice.

Typical repair cost £100-280 (including labour)

DIY fix possible

Check if your gas supply is active by testing another gas appliance like a hob.Ensure the gas stopcock valve is fully open.Press and hold the reset button for a few seconds to attempt a restart.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Protect yourself from future repair bills

A boiler cover plan would cover faults like Reset Light (Ignition) — no call-out fees, no surprises.

Top rated
OpenFix
Boiler & heating care plans
Get a quote →
Hometree
from £12.95/month
Get a quote →
HomeServe
from £8.00/month
Get a quote →

Affiliate links — we may earn a commission at no extra cost to you.

Vokera Mynute 10E is discontinued — time for a new one?

Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.

UK's #1 online installer
Boxt
Fixed-price online quotes. Next-day installation.
Get a free quote →
Heatable
Instant online boiler quotes from £1,499.
Get a free quote →
iHeat
Fast installation. Price match guarantee.
Get a free quote →

Affiliate links — we may earn a commission at no extra cost to you.

Related fault codes