I have run out of oil recently and have refilled the tank. I am following the instructions to restart the lockout but it keeps locking out. I have a firebrand oil combi boiler with a riello burner. Can you assist.
You need to bleed the airlock from the pump, read a few of the previous posts on it.
You may need to fdo this more than once, especially if you ran the burner until it was out of oil ans there may be quiet a few air pockets in the oil line, so stick with it.
It will fire, sometimes for even a few minutes then happen again.