Freezer compressor runs steady & getting -30F

Red Alarm Indicator Light
Under normal operating conditions, the internal temperature of the freezer will ensure the long-term conservation of the stored food. When such temperature rises above a certain level (-12 °C), the appliance will trigger an acoustic and light alarm. The light alarm is a blink red light (Red Alarm Indicator Light), while the acoustic alarm is an intermittent sound.
You can stop the acoustic alarm by pressing the Acoustic Signal Stop Switch once.

When switching on the freezer for the first time, the Red Alarm Indicator Light will blink until the internal temperature has reached a level required for the safe conservation of frozen food.

Fast Freeze function
If more than 3-4 kg of food is to be frozen:
1. Press the Fast Freeze Switch for 2-3 seconds to activate the fast-freeze function 6-24 hours before placing the fresh food in the freezer, the Yellow Fast Freeze Indicator Light will illuminate. The compressor will now run continuously, to ensure that the fresh food is frozen as quickly as possible.
2. It is possible to deactivate the function at any time by pressing the Fast Freeze Switch for 2-3 seconds.
3. Place the foods in the freezing compartments (indicated with graphics).
4. Once the food is completely frozen (it may take up to 24 hours) you can manually switch off the fastfreeze function by pressing the Fast Freeze Switch for 2- 3 seconds and the Yellow Fast Freeze Indicator light will also go out.
5. Move frozen food from the freezing compartments into the other compartments (storing compartments) to make room for another freezing.

If the Fast Freeze Switch is accidentally left on, the fast-freeze function will be automatically switched off 48 hours later. The Yellow Fast Freeze Indicator light will also go out.

I believe that you all understand. If you intend to freeze larger amount of food then certainly a few hours before some shopping switch on the fast freeze function.

Dado

Try disconnecting power for about 30 seconds, and then restore power. This will reboot the control and maybe restart.

If the refrigerator and freezer are both working properly. Then the only problem would be the alarm, It's either the placement of the alarm thermometer or the alarm thermometer is stuck closed.

The light indicates the need for a new battery (9V)

You need to check the temp in the freezer to make sure it's down to around 10 degrees. The alarm will go off much above that.

I called the repair service to send out a technician

Is the compressor running the whole time? If so may have a problem with a refridgerant leak....check the compressor in the rear of unit, feel if its hot....may be as simple as a relay.

-18c is about 0 F. it shold be cold enough to freeze you know what.
you might want to turn the tempture up a little.

That alarm is there for a reason. Grab your owner's manual and see the different things it can mean. If the gas is getting low, that could be it, and you'll want to solve it as early as you can.

Sometimes a power surge or brown out can make that alarm go off. Try unplugging it for 5 minutes.

you have a refrigeration issue partner let her go 16 yrs. is good service you can replace it for 3 to 5 hundred the repair will be that IF you can find someone with the r-12. don't go for a top it off and go deal the food you lose is to expensive for that to be economical.