JuliaM

Hi, I put my stove on last night, and left it on low overnight as I often do in the winter (the stove is a diesel squirrel stove). When I woke up this morning it had suddenly built up so a huge amount of soot that it had actually smothered and gone out. When I lit it last night there was very little soot - only enough to blacken the glass at the front. Does anyone know the possible causes for this and how to sort it out? As far as I can see the chimney isn't blocked, except by soot now of course! Thanks very much! Julia