High
F2 on Ideal Logic Combi C24 C30 C35

Your boiler is failing to stay lit or cannot detect its own flame, meaning it has shut down for safety and will not provide heating or hot water.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

What the manual says

Manufacturer manual

Flame Loss

From this model's manual
Verified against the Ideal Logic Combi C24 C30 C35 installation & service manual, page 55.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

What causes this fault?

This fault occurs when the boiler's control system can no longer detect the flame required to heat your water, causing it to shut down for safety. The most common reasons include a buildup of carbon on the sensing probe, a skip in the gas supply, or an internal component failing to provide a consistent spark.

This fault can be more frequent during the first cold snap of winter, as internal components that have been idle over summer may struggle to operate correctly under increased demand.

Engineer required

This is a high 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 →

Avoid the next call-out bill

A cover plan would handle faults like F2: 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

Related guides you might find useful