Freezer temp doesn't go below 20 degrees - Summit Commercial Upright Freezer SCF-U750

Question moved from Cars and Trucks.

-20'C is only 2' too cold on the recommended -18'C.

Some ideas in the link

https://www.google.com/search?q=Holiday+7.0+chest+freezer+doesn%27t+shut+off&

..

A bad temperature sensor? Or you have the temps set to read Celsius?

You should be able to set the unit up to 30?F and still freeze some contents.

There are different models made for holding different products. Yours has a 1/3 hp compressor for above 20 degs. It may have 0 on the thermostat and may well pull down that far, but -20 would be out of it's reach. Where as it's sister model is made to freeze to below zero has a 3/4 hp compressor. Larger compressor for the lower temps.

This is normal. All commercfial freezers must defrost 3 to 5 times a day, or they will freeze over at the coil and then stop freezing. A timer in your freezer turns off the compressor and turns a heating element on for 10 to 15 minutes. During that time the coil heats and melts frost from the coil. Usually within 30 minutes the temperature will briefly rise to 20 t0 25 degrees F and then quickly drop down to 0 degrees F. The food rarely defrosts in this short period of time..

this is something you can do now. Check this 1st:
make sure that the air vents are not blocked and that you didnt overload the freezer with food

there can be other things that will not bring the temp. below 10 (that temp. is not too bad as long as it doesnt spoil the food)
here are the possiblities:
t'stat is set too low
t'stat is not responding to zero degrees (all that means is it is shuting off the compressor too soon to reach zero)
dirty condenser
r-134a freon is a tad low (only takes like 9 oz. if lose 1 or 2 that is enough to affect performance)
the freon is the last thing to check cuase you have to call someone to do that for you...

Well hope this was helpful... check the temp often watch to see if it gets above 20 degrees cause that will spoil you food..

If the temperature fluctuations occur (at least the ones to 20-30 degrees) at intervals of 6 hours or so then you are catching it in it's defrost mode which occurs on a timer. The timer shuts off everything except lights every 6 hours for an average of 20 minutes. This usually isn't enough to thaw things but I have seen it cause some crystale. Look closely at the back inside wall of the freezer for an accumulation of frost. If you see it there then you may have a defrost problem. Usually this is accompanied by steadily rising temperature in the freezer and fresh food secions both. The temps you listed (0to10) are fine. Good luck, AJ

Move the refrigerator to a room that is at least 50 degrees F.

Temps on most refrigerators are regulated by the fresh foods temp. If your garage is let's say 35 degrees, the fresh foods temp will most likely never raise enough to turn the refrigerator on. With the refrigerator never running, the freezer compartment will warm to 35 degrees, resulting in everything melting. Even if garage is a bit warmer, say 45, the refrig will not run long enough for the freezer to maintain a low enough temperture. If the garage temp falls to below freezing, say 20 degrees, the food in the fresh foods compartment will freeze. (outdoor beverage dispensers have internal heaters to prevent product from freezing !) Please don't rate this if not a Fix-Ya for you, as anything else lowers my score.

jtcarlier
20 Degrees is good



I am happy to assist you!
Neil
PS. Before you leave this site please leave a "Problem Solved" rating for me on fixya.com

Our manual says it can take our freezer up to 48 hours to get back to the correct temperature. I found that to be the case when we loaded it fully for the first time.