Originally Posted by chrishowden
ok thanks. do you think it is a major problem
chris if it was pumping ok on the old impellor then I doubt it is a major issue - but if the forgot to put it in / put it in wrong / didn't reassemble correctly so that no water is circulating then you have the ingredients for getting a major issue very quickly.
I'd have thought it was normal to run it up afterwards to check all was OK. In which case I guess your idea of cold weather might be right - could the water have frozen in the tell tale tube/outlet? I'm assuming you are storing it outside. Can you poke a piece of strimmer wire (or something similar) up the outlet to check for a blockage?