BoilerFaultCodes.com
3 Low Information

Your boiler has reached its required heat and is currently taking a normal break until the temperature drops 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 operating but up to temperature

What causes this fault?

This occurs when your boiler has successfully heated the water to the level set on the thermostat and briefly stops firing to prevent overheating. It is a sign that the system is working efficiently and has reached its target temperature, rather than a sign of a mechanical failure. The boiler will automatically restart and begin heating again once the water temperature inside the unit drops below a certain point.

This status is more frequently observed during spring and autumn when the weather is milder and the house does not require constant heat to maintain its temperature.

Typical repair cost £0 (including labour)

DIY fix possible

Check that your room thermostat is turned up higher than the current room temperatureEnsure your programmer or timer is set to an 'ON' periodWait a few minutes to see if the code clears once the water inside the boiler cools down

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 3 — 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.

Potterton Envoy 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