Low
47 on Alpha Evoke 28NX

Your boiler is still working but cannot reach its full power, meaning your radiators might not get as hot as they should.

Monitor it

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.

What the manual says

Manufacturer manual

Reduced burner output

From this model's manual
Verified against the Alpha/Alpha Evoke Nx 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 fault requires 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

Monthly cover means no unexpected bills when your boiler breaks down.

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.

All 25 fault codes on the Evoke 28NX

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

Related guides you might find useful