I bought my stove new in 1994 and have maintaned it myself all along and it works great. We burn about 4 tons per year. The problem I'm having is when I start the stove. Late last winter when restarting the stove after cleaning we noticed it went off after a short time. I restarted the stove and it did the same thing so I held down the start button for about 15 seconds longer and it stayed running. I continued doing this a couple of more times before we were done using the stove until next fall. Now I've started on the major summer maintenance I do every year. I remembered the problem I was having so I wanted to fix that first thing. I pluged in the stove and was going to see how it acted when I tried to start it up. When I released the start button the stove shuts down immediately. I disconnected the Low Limit switch wires and tested the switch, it checks open. I'm thinking it might be the timer circuit on the board ?. What's your thought ?