Brian R Aurora , IL November 28, 2022 Appliance: Whirlpool Gas Dryer WGD4800XQ4 Whirlpool Dryer Wgd4800xq4: Intermittent no heat. How to replace Dryer Timer Assembly. After testing and talking to your help people we determined it was the Timer assembly. I replaced it and all works fine now. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes