What the manual says
Manufacturer manualThe burner doesn't light, the ignition sparks continue and the boiler locks. By pressing the reset push-button the boiler starts the ignition cycle. The burner lights, the ignition sparks continue and the boiler locks again.
From this model's manual
Verified against the Riva Compact He C2 Service 2007 installation & service manual.
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 →
Boiler cover options
Avoid the next call-out bill
A cover plan would handle faults like Lock-out signal lamp ON: no call-out fees, no surprise bills.
Approved partner
Get a quote →
Domestic Appliance Guard
Unlimited call-outs, 24/7 helpline, no price-hike promise
Affiliate links. We may earn a commission at no extra cost to you.