Follow up your letter with a phone call to corporate headquarters. Keep going up the ladder. I had the same problem with a stove that had one of the first digital clock/timer systems installed in it. Everytime our lights blinked during an electric storm it would short out. I had i replaced 4 times under warrenty. The 5th time they wanted me to pay. I said no way and kept calling until I finally got the east coast vice-president to resolve my problem. All over a stupid stove timer. The point is you're the customer-make sure they know the hundreds of forum members you will inform about your service or lack there of.