If you accidentally turned on a secondhand fridge shortly after transporting it on its back, there are a few steps you can take to check for damage and try to fix it:
Unplug the Fridge: The first step is to unplug the fridge immediately. This will prevent any further damage and allow it to settle properly before attempting any fixes.
Let it Settle: After unplugging, let the fridge sit upright and undisturbed for at least 24 hours. This time is crucial because when the fridge is transported on its back, the compressor oil can flow into the refrigerant lines, causing potential issues with the cooling system. Allowing it to settle helps the oil to return to its proper place.
Check the Compressor: Once the settling period is over, plug the fridge back in and listen for any unusual noises coming from the compressor. If you hear loud knocking or clicking sounds, it may indicate damage to the compressor or the compressor mounts due to improper transportation. A faulty compressor can lead to cooling problems.
Monitor the Temperature: Set the fridge to its normal operating temperature and give it a few hours to cool down. Monitor the internal temperature using a thermometer to see if it reaches the desired level. If it doesn't get sufficiently cold, there may be an issue with the cooling system.
Check the Condenser and Evaporator Coils: Make sure the condenser coils (usually located on the back or bottom of the fridge) and the evaporator coils (usually inside the freezer) are clean and free from dust and debris. Dirty coils can impact the fridge's cooling efficiency.
Inspect the Door Seals: Ensure that the door seals are intact and create a proper seal when the doors are closed. Damaged or worn-out seals can allow warm air to enter the fridge, affecting its ability to cool properly.
Verify the Thermostat: Check the thermostat settings to ensure they are correct and adjusted appropriately. If the thermostat is faulty, it may not trigger the compressor to cool the fridge properly.
Allow Adequate Air Circulation: Make sure the fridge is placed in a location where there is enough space around it for proper air circulation. Blocked vents or limited airflow can hinder cooling performance.
If, after following these steps, the fridge still doesn't cool adequately, it might have sustained some damage during transportation that requires professional repair. In such cases, it's best to contact a qualified appliance repair technician to assess the issue and provide a proper fix.