Freezer Defrost Program
•According to the conditions of usage, the defrost might be activated after the min
compressor running time; 8 hours or max total time; 55 hours. Below matters are also
effected;
• Consisted ice amount,
• Door open-close,
• Sudden usage variance,
• Cooler sudden temperature rise,
When the refrigerator works on first time;
If the cooler compartment defrost sensor and the freezer compartment defrost sensor are
hotter than -5°C, the test system works automatically. These below components are tested
automatically every 5 seconds.
The compressor and freezer fan motor starts and stops after 5 seconds.
The defrost resistance stars and stops after 5 seconds.
The cooler defrost resistance starts and stops after 5 seconds.
The DC Radial Fan starts and stops after 5 seconds.
After these steps, the system waits 5 minutes and then it will switch normal mod.
There are three types of sensors. They are cooler, freezer defrost, cooler defrost sensors. Cooler and
freezer defrost sensors have the same features but their cable length is different. The resistance
values of all sensors decrease when the temperature values of the sensors increase. For example,
the resistance value that is 33 kΩ in the -35.5 ºC goes down to 1kΩ in the 45 ºC and therefore the
ambient temperature should be considered while the sensor is being checked. If the ambient
temperature is 25 ºC, the measuring device shows about 2.2kΩ (if ntc sensor is steady).
NTC Sensor
Cooler Defrost Program
The cooler defrost and the freezer defrost are operated parallel except those below.
If the cooler defrost sensor does not feel 5°C three times during a particular period of time.
• Defrost will be activated after the refrigerator works max 9 hours. According to the
conditions of usage, the defrost might be activated (due to mentioned those below) after
the compressor works min 5 hours.
• Consisted ice amount,
• Door open-close,
• Sudden usage variance,
• Cooler sudden temperature rise,
RFF730 Caple 70/30 Freestanding Fridge Freezer
