User Manual Frigidaire FFU2124DW11 20.6 Cu. Ft. Upright Freezer

If your freezer is not running, it might be due to one of the following reasons:

The control knob is turned to OFF. Simply set the knob back to ON.
A fuse is blown in your house, or a circuit breaker is tripped. If this is the case, reset the circuit breaker or replace the fuse with a 15 amp time-delay fuse.
The power cord may not be plugged in. Check to be sure the plug fits tightly into the wall outlet. Note: Do not use an extension cord.
A power outage has occurred. In this case, you might want to call your local electric company.

If your freezer is vibrating or rattling, check the below:

Be sure the freezer is level. If your freezer rocks on the floor when it is moved slightly, level it by adjusting the leveling legs or by using wooden shims. You should also check to be sure that the floor can adequately support your freezer.
Check to see if the freezer is touching the wall. If so, move it slightly or re-level it.
Remove any items that are on top of the freezer.
Check items inside the freezer. It is normal for items inside the freezer to vibrate somewhat. If it seems they’re vibrating too much, try re-leveling the freezer or moving it slightly.

Newer freezer models have greater storage capacity and a broader temperature range, both of which require a high-speed compressor. The compressor is what you hear when your freezer turns on, and it’s normal for the sound level to be higher than on older models.