Richard L Visalia , CA March 18, 2020 Appliance: LG Front Loading Combo WM3477HW Lg Washer Dryer Combo Wm3477hw / : No heat. How to replace Thermostat Assembly (Temperature Control). I replaced the thermostat unit and the heater worked again. So far so good!! Thanks to quick service from you and decent prices. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes