Why does the freezer motor/compressor never stop running and the side of the freezerfeels hot?

Seems compressor getting trip off continually .kindly check thermostat setting fan motor and input power supply

If the sides are hot, look at the defrost timer. Sounds like it has stopped running with the defrost elements on. The compressor has a safety switch on it that opens either if the compressor gets too hot or if it pulls too much current when starting. If your power flickered a lot before coming back on, that triggered the safety switch. Now that it's running normally, I wouldn't worry. The defrost timer is your problem now.

Good Afternoon Friend,

I understand the sides of your Frigidaire freezer are hot and the compressor is very hot. I also see that the drain plug was frozen and the coils had lots of frost, which you defrosted and your freezer began running again. It looks like your freezer quit again and started up, leaving everything hot. I suggest contacting your local authorized technician for further assistance. They will be able to diagnose and determine what exactly is causing your appliance to be hot. Hope this is helpful.

-Best Regards-
WP

Compressor is bad the clicking noise is the Start Relay/Overload is kicking on and off. compressor is warm because it's trying to start but can't Frigidaire is known for bad compressors. I don't think the Start Relay/Overload is bad because the compressor gets warm.

Make sure the evaporator coils on the back or underneath near the compressor are clean. If there is a fan near the coils make sure it's running.

Check the condenser fan underneath the unit accessable form the back behind the cardboard cover. It should be running when the compressor runs. OR Check the evaporator behind the rear cover inside the freezer. Check for ice build up. . Light frost everywhere(NORMAL) or a partial pattern of ice(LOW ON FREON) or nothing(LOW FREON OR COMPRESSOR PROBLEM).
If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control

inspect the unit for a fan near the compressor not to be alarmed some do not have a fan if so insure that it is running while the compressor is running also some defrost problems will cause this the unit runs for a long time heating the compressor and by way passing the heat along

is the compressor running ? if yes feel the cooper tubes around , the tiniest one is suppost to be hot if is not hot u have a leak call a tech . if it is hot open the freezer and take the back cover inside of the freezer if the coil is totaly covered with ice you have a defrost problem , check the timer , bimetal and heater

If the freezer was stored and not running for 7 years it may have lost coolant.  Since the compressor is running recharging the coolant may fix the problem.  Hot compressor might indicate low coolant since its motor is immersed in it.

I suspect when you lifted or moved the freezer, you tilted the compressor such that the oil washed out into the refrigeration lines. Common when people tilt refrigeration equipment the wrong way.