How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Appliance Guru Your Own Question
Appliance Guru
Appliance Guru, Owner and Technician
Category: Appliance
Satisfied Customers: 14604
Experience:  Over 15 yrs. experience with 10,000+ in home repairs.
Type Your Appliance Question Here...
Appliance Guru is online now
A new question is answered every 9 seconds

We have a Sub Zero 642 refrigerator/freezer unit. Earlier

This answer was rated:

We have a Sub Zero 642 refrigerator/freezer unit. Earlier today the unit began making a lot of noise (loud hum) when the doors are CLOSED. The noise only stops when we open the freezer-side door. It sounds like a fan of sorts and is emanating from the ice maker - we think, or behind it. The ice maker drawer had been taken out frequently today from the freezer. We don't know if that's contributing to this.
Thanks for using this service. Please be logged in to rate my assistance when we are done. Rating 3-5 is good, but 1-2 is bad so talk with me first.

It sounds like you may have an issue with the evaporator fan in the freezer. The fan is turned on and off when you open and close the door. The fan is located behind the icemaker. Remove everything from the upper shelves and take out the upper shelves. The upper back panel is "L" shaped, remove it by taking out the two white phillips head screws at the front of the "L" and lift the front up and out. When the front is out far enough you can drop the back and pull it all out. Pop off the grounding clip to fully remove the "L" panel and set it aside. You'll then see the evap fan behind the cooling coil. There are two screws which hold it in place. That is a common problem and it likely has a bad bearing or is seized up.


Appliance Guru and other Appliance Specialists are ready to help you