Under 20F my wait to start light rotates on and off about once per second. Eventually it will stop and go through the normal warming cycle. Plugging in the block heater helps, but it's about 7F and I've been waiting over an hour for it stop, even after being plugged in all night. I replaced the grid heater about a month ago, but that had no effect. I've uploaded a video...http://www.youtube.com/watch?v=K7jBl-9TnsY
Any suggestions?