Schen C Port Townsend , WA November 29, 2014 Loud clicking noise I removed the defrost timing housing and installed a new defrost timer. I first thought it was the compressor going out, that's what it sounded like. But after closer examination it was the timer. Easy fix. Thanks for your great service Appliance Parts Pros.com. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes