Good Morning Herb Reinhart - An error code DR commonly refers to a door lock malfunction. Try reprogramming the range by either unplugging it or flipping the household circuit breaker off. Wait approximately ten minutes and turn the unit back on. Typically, this will clear most false error codes. If the error code continues to display, the range could possibly have a faulty door latch, light switch or EOC (electronic oven control). I would strongly recommend contacting a professional to get the appropriate diagnosis prior to make any unnecessary part replacements.
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