Flame ON Emergency

Vokera Flame ON Fault Code

Also written as FLAMEON — same fault.

The Vokera Flame ON fault code means: your boiler's electronic control system is incorrectly detecting a flame inside the unit even when it should be turned off, which is a safety concern that prevents it from starting up correctly.. It appears on 6 Vokera models in our database.

Act immediately

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

Technical description: Flame ON
Typical repair cost £150-250 (including labour)

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 →
Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like Flame ON: 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.

Vokera models that show the Flame ON fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Vokera Flame ON fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026