BoilerFaultCodes.com
1 Green Flash Low Information

Your boiler has reached the correct temperature and is simply taking a break until it needs to heat up again.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Boiler temperature reached – no action required

What causes this fault?

This occurs when the water inside the boiler has reached the maximum temperature set by your thermostat or the control dial. The boiler temporarily shuts off the flame because it has successfully done its job, and it will automatically restart once the water temperature drops and needs topping up. It is a normal part of the heating cycle rather than a mechanical failure.

This status is more frequent during autumn and spring when the weather is milder, as the system reaches its target temperature much faster than it would during a freezing winter.

Typical repair cost £0 (including labour)

DIY fix possible

Check your room thermostat to see if it is set to the desired temperatureWait for the temperature to drop slightly for the boiler to restart automaticallyNo further action is required as this is normal operation

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 1 Green Flash — 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.

Baxi MainEco 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