Upright & Chest Freezer - Operating Temperatures
The correct operating temperature of chest and upright freezers, including smaller, compact models is -5 to +5 degrees Fahrenheit. In order to take the temperature of solid food, place a thermometer between frozen packages or in some ice cream.
On freezers with a numbered control, adjusting the control affects the compressor run time. The numbers do not equate to a specific temperature.
Your chest freezer may offer a "test" position on the temperature monitor control. In order to verify that the buzzer alarm is working, just put the switch in the test position and turn the thermostat to the coldest setting. The buzzer should go off within 10 to 15 seconds. This procedure verifies the control is working.