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no rule of thumb
maybe if you got a different thermostat that has a lower setting than standard
however as upright freezers are very bad freezers compared to chest type freezers the lowest reading will be around the -35 degrees C
Why very bad -- every time you open the door you dump 20 degrees out onto the floor and the temp difference is more pronounced than opening the lid of a chest unit which keeps all of the cold in the unit
remember the colder the setting the more the compressor is working
Hi Julie. I'm Roger. It sounds like the operating thermostat is not working When not in the fast freeze mode. Can you here a click sound from the thermostat when turning the temperature up and down short of fast freeze? We normally charge them to operate at -10 to -20 degrees. The inside temperature will normally only reach a temperature around 18 degrees warmer. The operating thermostat should allow you to regulate its temperature any where from that capability up to where you want it. See if your thermostat makes a clicking sound when adjusted. The warning light comes on because it knows the box temperature is higher than it is set for and is warning you of that. If it uses a printed circuit (PC) board, the click will dot be very loud. listen closely. Let us know how this turns out for you. We have very good refrigeration techs. here. Someone else here may have an idea too.
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..
I would start there. If the thermostat has an off setting, turn it there and see if it goes off. If not, try turning it to it's warmest setting while the box is cold to see if it turns off. To test to see if the relay/ contactor is stuck/bad, kill power to the unit (Unplug or turn off breaker). Disconnect one wire to the thermostat. Restore power. If unit runs, bad relay/contactor. If unit does not run, I'd replace the thermostat. Make sure the sensing bulb of the thermostat is in the conditioned space of the box or in the return air (intake) side of the evap so it can sense the box temp.
hi brian 20 degrees is too warm for a freezer i think you may have a dirty condensor coil its usualy under the freezer or on the back also check and if it has a fan on the outside make shure its turning let me know what you find and you can e mail me at [email protected]
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
Depends on the product you want to keep in the freezer. Usually you want to try and stay between 0 and +10 degrees for most items. Ice Cream must be -10 degrees minimum. Any warmer and it won't keep. Hope this helps.
First make sure you have a good 9v battery installed. If it is ok then the problem will probably be in the display board or the wiring connectors between the boards. CE is communication error. If your model has the electronic tempature control instead of mechanical thermostat the problem could be in there. My bet is a bad connection at display board.