If your new fridge is shutting off for 12 hours and then coming back on every 45 days, it is likely part of an automatic defrosting process. Many modern refrigerators are designed with a feature called "automatic defrost" to prevent frost buildup on the evaporator coils, which can reduce the fridge's cooling efficiency over time.
Here's how the automatic defrost process typically works:
Cooling Phase: The refrigerator operates normally, maintaining the desired temperature inside the fridge and freezer compartments.
Frost Accumulation: During regular use, moisture in the air can condense and freeze on the evaporator coils, forming frost. Over time, this frost layer can become thicker and reduce the fridge's cooling efficiency.
Defrost Cycle: To prevent excessive frost buildup, the refrigerator enters a defrost cycle. It shuts off the cooling system, allowing the accumulated frost to melt. This typically takes around 12 hours.
Restart: After the defrost cycle is complete, the refrigerator automatically turns the cooling system back on to resume normal operation.
Defrost Frequency: The frequency of the defrost cycle can vary depending on the model and usage patterns. In your case, the fridge seems to have a defrost cycle scheduled every 45 days.
By periodically defrosting, the fridge ensures efficient cooling and prevents frost from building up to a problematic extent. This process helps maintain the appliance's performance and keeps it running smoothly.
If you notice that your fridge is defrosting more frequently or less frequently than every 45 days, it could be a sign of an issue with the defrost timer, thermostat, or other components. In such cases, it's best to refer to the fridge's user manual or contact the manufacturer's customer support for assistance.