BoilerFaultCodesYour boiler is sensing a flame inside the unit even though it hasn't been told to ignite yet, which is causing it to shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flame detected when no flame should be present
What causes this fault?
This fault occurs when the boiler's internal sensors detect a flame signal at a point in the starting sequence where the gas should still be turned off. The most common reason is a faulty sensing electrode sending a false signal or a gas valve that is leaking slightly and allowing fuel through when it shouldn't. In some cases, a fault on the main circuit board can lead the boiler to misinterpret electrical signals as a live flame.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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 E06 — no call-out fees, no surprises.
Affiliate links — we may earn a commission at no extra cost to you.
Remeha Avanta 18V 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.