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You might have ice building up on your evaporator coil. That ice serves as an insulator and prevents the internal freezer temps from going down to design parameters. The ice buildup is caused by the defrost mechanism not working - check the timer or the defrost heating element.
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My name is Peter. I am a retired field service refrigeration technician.
The normal setting for a freezer is -2 to +2 degrees F., and the normal setting for the fresh food section is +35 to +40 degrees F.
You only have one source of cooling and that is your freezer. With the settings that you have, you are asking your unit to do what it is not designed to do.
The ice maker is struggling because if it is a cast steel ice cube mold, the heater beneath it is not designed for the current to break the ice cubes free @ -18 degrees F., or if you have a plastic flex ice cube mold it is too ridged to flex enough to break the ice cubes free. Normally your ice maker should dump 8-10 times in a 24 hour period.
A note on food storage. Make sure you do not overload your freezer of fresh food section to the point where food product extends beyond the edge of the shelves.
if the evap fan is not turning try to turn it by hand a few times then start you freezer if it does not turn it needs to be replaced.make sure there is no ice build up on the evap coils.alos check the continuity of the defrost heater below the evap coils.once you het teh fan replace your unit should cool down to the proper temps.
Check temp. in freezer shoud be 0 to -5 Deg. Check condensor if dirty clean some units had a recall on diers cap.tube to far in dier also check for ice on back wall if icedup check defrost heater and defrost timer check evap. fan make sure it's turning.
If the condenser coil is clean and its fan works ,probably the unit is low on refrigerant which means there's a leak that has to be repair before recharging the system.
If this is a commercial unit, you're too low on refrigerant (freon). Freezer should be about a minus 10 degrees for the evap and high side is ambient converted to a psi for the type of refrigerant that is in the system plus 25-30 psi.
The evap fans will not come on because the evap is not cold enough.
Hope this helps and good luck.
In most cases, an evap that freezes up is either an air flow problem or no defrost cycle. Older Hobarts have mechanical defrost time clocks. It could be locked up i.e., not running so no defrost cycle.
It could be coming out of defrost too early because the sensor that monitors the evap temp is not working properly.
The door could not be closing. If left cracked open, it will freeze up every time as unit never hits temp., keeps unit running. Warm air is seeping in and the moisture freezes on evap.
Lastly, the defrost heater(s) may not be working. Burned out, shorted, broken wire, etc.
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.
When you open the freezer compartment do you hear a fan blowing? If no the take off the back cover and replace the fan. The compressor has to be on at the same time for the fan to work. If you know what I mean. let me know what happened. thanks.
If this is a Bev-Air, don't think the door switch will control the fan. At the evap, there is a temp sensor called a fan delay. When unit goes into defrost mode, this warms up. Some also serve a dual purpose. It will terminate the defrost cycle at a certain temp., say 51 degrees or so, at the evap. Anyway, when unit comes out of defrost, it keeps the fan off so it allows the evap to cool quicker and to prevent circulating warm air. This could be your problem. Not a hard fix but they can be a pain sometimes. Outside chance that the unit is low on refrigerant (freon). This will not let the evap get cold enough to trip the sensor back into position to turn the fan on. Good Luck. Restaurant Parts and More carry alot of Bev-Air stuff. 1-888-814-1110. Ask for Rick
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