Customer Questions and Answers for Dryer Cycle Timer by Whirlpool

Steve, a quick easy check first, Put the timer dial in the air fluff selection 9 5 or 10 minutes will be sufficient) and start the dryer, if the timer advances and shuts off, the timer would not be the issue. You would then want to disconnect the exhaust vent tubing, and clear all the lint, and possible kinks and clogs, remove the lint filter and remove any debris or lint in the housing. Then run the dryer with the vent disconnected on one of the drying cycles. The way your dryer operates and timer advances, is based on drum temperature, if the temperature is not correct, due to a clogged vent or air flow issue,the timer won't advance. There are other possibilities, but start there.