Emergency
A02 on Euroterm E27 Plus

Your boiler is picking up a signal that a flame is present even when the heating is switched off, which is a safety precaution that causes a lockout.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Flame detected with the burner off

From this model's manual
Verified against the Euroterm/Euroterm E27 Plus installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

Find a Gas Safe engineer
Search the official register →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like A02: no call-out fees, no surprise bills.

Approved partner
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Get a quote →

Affiliate links. We may earn a commission at no extra cost to you.

Related fault codes

A01View →A03View →E02View →

All 27 fault codes on the E27 Plus

Seeing a different code? Every code this model can display, in one place.

A01A03A04A05A06A41A42A44A61A62A63A64F07F10F11F12F13F14F15F34F35F37F39F43F52F66

Related guides you might find useful

Boiler keeps cutting out

Lockout fault with a reset-needed pattern.

Read →

Pilot light keeps going out

Older boilers: thermocouple, draught or gas supply.

Read →

When to replace your boiler

7 signs repair isn't worth it anymore.

Read →