Toby B Clinton , MD October 24, 2019 Appliance: Whirlpool Gas Range WFG320M0BW0 Whirlpool Range Wfg320m0bw0: The oven would not heat up and the oven front outside glass had shattered. How to replace Glass-Door (Wht). First I replaced the oven igniter which took about 10 minutes, then the front out side glass was replaced, done. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes