After loading a few new food, temperature is getting up from -19 to -10 and red AL sign. Temperature get down one degree(-11,-12,..) every day. what is the problem? it seems freezer is tired or weak.

A flashing red light on a tall freezer indicates that the appliance has detected a temperature alarm, and the temperature inside the freezer has likely dropped below the desired range. A temperature of -6 degrees Celsius is much lower than the recommended temperature for a freezer (-18 degrees Celsius), which can cause frozen food to become damaged or spoiled.
To resolve the issue, you should first check the freezer's manual for troubleshooting tips and recommended actions. In general, you may need to adjust the thermostat to a higher temperature, remove any obstructions to airflow, or defrost the freezer if ice buildup is blocking the evaporator coils. If the issue persists, you should contact a qualified technician to diagnose and repair the freezer.

As the beef was already frozen when it went into the freezer it should take just a few hours for the cabinet temperature to stabilise at the temperature the thermostat is set to and for normal cycling to begin.

Checking the temperature is a good place to begin. For the safe long term storage of food, especially meat, the interior should be minus 18 to minus 25 degrees C or between zero and minus 10 degrees F.

If the system isn't cycling because the cabinet isn't cold enough to cause the thermostat to cut the motor off there is something wrong with the refrigeration unit such as a refrigerant leak. Maybe the insulation is damaged...

If the cabinet is colder than ideal the thermostat has probably failed. Turning it down should switch the motor off and then turning it back up should restart it.
Or maybe the thermostat is set too high for cycling to take place.

Buy yourself a quality thermometer and check the temperature - first!

Red light lit on freezer means that is not reaches operating temperature.

Most often the old freezer has three indicator lights.
- Green light : that it is brought to a power source and turned on - Red light : means that the temperature is above -18 degrees
- orange light : pressing the so-called SUPER-switch which means that the compressor is running continuously. The SUPER-button switch on a few hours before you begin deep-freeze foods. Freezing time depending on foods quantity (kg). With old freezer must be careful to turn off the switch S (orange light) when the red light goes out or when foods are frozen, otherwise after a few days may burn out the compressor. You should be following the instructions from user manual.
In new freezer managed by the electronics, this function has a predetermined maximum duration, in order to protect the compressor, and can have different marketing names like "shopping".....

Dado

What you call temperature swing, is hysteresis. For a refrigerator it only is allowed a few degrees. 1 or 2 up and down. A swing from 32 to 45 is far to big. Unless the factory can prove they advertise these figures. I would never buy a frig like that.
I would contact the dealer and ask him / her to replace the thermostat and if that is not possible to bring another refrigerator.

Something is really wrong with yours.

40 degree is a perfect temperature for produce if its lower that stuff will turn brown. Maybe you thermometer has failed. Go to the food store and get a red stick and put it in there. Then adjust with that temperature indication. Hope this helps and good luck.

This information does not mean anything to us if you didn't specify the model. In what temperature range a freezer works we knew thanks to the stars.
One star (-6 degrees centigrade) is perfect for making ice cubes and is sufficiently cold to keep food for three or four days.
** Two stars (-12 degrees centigrade) stores food for fifteen to twenty days.
*** Three stars (-18 degrees centigrade) will keep food safe for up to three months.
**** Four stars (below 18 degrees centigrade) means that the compartment provides the ideal conditions for freezing down fresh and pre-cooked foods.

Dado

Refrigerators are designed to be used inside at typical to normal household temperatures. The problem with refrigerators are if the ambient temperatures drop down below 55 Degrees F Food in freezer will begin to defrost when the temperature in the garage goes below 55 degrees Fahrenheit. The fresh food section may begin to freeze food slightly below this temperature. If you live in an area where the outside ambient temperature does not get below 70 degrees F or 20 degrees C then the refrigerator will work fine but to have it located in an area where temperatures drop well below this you could lose some food. There are heaters that can be adapted to the compressor if used in an unheated area. Hope this helps, Sea Breeze

turn crock pot a little more down wile cooking and add a little more water to what your cooking with a little oil to the water.

Good day,
Manufacturers of freezers do not give the option of running the machine much above that temperature. Normal operating temperature for a freezer is about -2 to about 8 above F.
Otherwise people could accidentally set the temp too warm and cause a loss of food.
Some appliance parts houses carry universal thermostats that could possibly cover the temperature range your looking for, but 30 degrees is far to warm to preserve frozen food safely.

When the heater comes on for defrost behind the rear freezer panel , it gets red hot . The defrost thermostat ( bimetal ) , cuts the heater off , when it reaches 140 degrees for new (2000 - 2009 ) and 55 degrees for older refrigs . When this temp is reached at the top of the coils , the lower portion will be hotter due to being closer to the heater . The frozen food in the freezer , is what keeps the temp down in front of the rear freezer panel . No food in freezer , the hotter the freezer section will be .