BoilerFaultCodesYour boiler is currently set to a low temperature, which is preventing the burner from igniting properly or keeping it at a very low flame.
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 thermostat at low setting.
DIY fix possible
Locate the thermostat dial or digital display on the front control panel.Turn the heating temperature dial to a higher setting (e.g., 60-70°C).Wait a few minutes to see if the burner ignites fully and the flame stays consistent.
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 Main burner will not light or lights at low flame (3) — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Chaffoteaux Flexiflame 140 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.
Affiliate links — we may earn a commission at no extra cost to you.