John B Blackhawk , SD January 09, 2016 My refrigerator wouldn't cool on fridge side and freezer wasn't freezing!!! pulled back panel freezer side and noticed the cooling coils were froze Ordered a new timer and new heaters. When they finally arrived (several days late)!!!! It only took about 15mins to install all parts. It's been working great ever since. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes