oil boiler

When we moved in to this house a few years ago I wasn’t familiar with oil fired or biomass boilers in any way at all. This was the system that greeted us: Look at the size of that water tank on the right of the image! 3,000 litres apparently; it’s an accumulator tank, a sort of battery...

A few days ago my oil boiler stopped working. After checking fuel, electrics etc. I finally found the solenoid to be open circuit. Replaced that and the boiler lit immediately. Huge amounts of black smoke came out of the flue which I thought was just a build up of excess oil from before the...