Sealey AB100 kiln problem...? I have a sealey ab100 boiler with a problem. The oven runs perfect...

I have a sealey ab100 boiler with a problem.
The oven runs perfect next to lid up but as soon as lid is closed there are fumes and blueish smoke beside little or no heat.
any planning.
Answers:    Watdahelliza AB100?
Sorry, i have NO CLUE??? I enjoy central a/h but i needed to wish u MERRY XMAS..............adjectives i can suggest is make a booty call upon to keep u heat????????????????? HA HA HA!!!!