I tend to agree with 'Inferno'. It shouldn't matter that it's cold in the shed the ignitor should still be able to do its job. Doing multiple refills of the pot is definately a dangerous thing. I have a friend that lives on an island off the NE coast. They get frequent 'brown outs' because their electricity comes from an old diesel generator that fails frequently. Last year they woke in the middle of the night, during one of these brown outs, and found the stove glowing cherry red because the reset cycle had re-filled the pot multiple times. I'm not suggesting the same but it does illustrate the point. I'm by no means an expert but maybe the issue is simply that the slot in the burn pot, that allows pellets direct access to the element, has closed up with clinker. This makes the ignition fail more easily. Cleaning the slot could fix it. I have certainly seen this happen with my CB.