Boiler problems

[bondal]

I have a Worcester Heatslave 20/25 Oil Boiler. It's locked out and can't get it fixed. I've checked the Temp Lock-out switch but this is OK. Have found that the Burner has a Yellow light on and this seems to be the problem how can I fix this?

[gasman]

The LOCKOUT light iluminates if a burner ignition failure occurs. The burner can be reset after two minutes by pressing the illuminated lockout reset button located on the burner control box. Do not attempt to repeatedly restart you're boiler as persistant lockout indicates a fault and you should consult a service engineer.