BoilerFaultCodes.com
2 High Lockout

Your boiler is failing to light the gas burner properly and has locked itself 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: Ignition: ignition is activated for 2.4 seconds while the gas valve is opened.

What causes this fault?

This fault occurs when the boiler tries to light the gas but can't confirm that a steady flame has been established. The most common reason is that the spark isn't strong enough to ignite the fuel, or the internal sensors are too dirty to 'see' the flame once it starts. In some cases, it may also be caused by an insufficient gas supply or a failing component that controls the gas flow.

Typical repair cost £120-350 (including labour)

DIY fix possible

Check that your gas supply is turned on at the meterIf you have a prepay meter, check that you have enough creditPress the 'Reset' button on the boiler control panel for 2 seconds

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 2 — 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.

Remeha Quinta 30 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