Frost build up in your Sub Zero refrigerator along the back wall or around the crisper drawers can be caused by several different components, even your sealed cooling system.
Here are 4 common reasons for this to happen:
- Door gasket needs replaced
- Poor air circulation
- Sealed system compromise
- Clogged drain tube
What to look for to fix frost build up
Check your refrigerant pressure. Often times to compensate for the lack of coolant in the system, the unit works overtime & ice will build on the back wall of the the SubZero Model.
If you are super low on refrigerant, you can be sure there is a leak in your system, typically your evaporator is to blame.
- You’ll want to unplug your unit, take the cover off the motor area. Check your refrigerant pressure.
- if it’s low, you’ll want to test your evaporator for leaks.
- Once you’ve bled the line and reclaimed the remaining coolant, you’re ready to replace the evaporator.
- We suggest you call out an experienced SubZero repair service for evaporator replacements. In addition to the specialized tools and gauges required, you want to make sure the job is done correctly so you don’t break something else.
