If your refrigerator is only working for one day after defrosting, it could indicate a few potential issues:
Defrosting not sufficient: One possibility is that the defrosting process wasn't sufficient to completely remove all the ice buildup in the freezer. Even a small amount of remaining ice can hinder the refrigerator's cooling ability and lead to a rapid re-accumulation of frost.
Faulty defrost system: Your refrigerator has a defrost system that helps prevent excessive frost buildup. If any component of this system (such as the defrost timer, defrost heater, or defrost thermostat) is malfunctioning, it could lead to inadequate defrosting, causing the problem to persist.
Poor door seal: The door gaskets of your refrigerator are responsible for creating a tight seal when the door is closed, preventing warm air from entering and cold air from escaping. If the door seal is damaged or not sealing properly, warm air can enter the unit, leading to excessive frost buildup.
Refrigerant leak or compressor issue: If your refrigerator's cooling system has a refrigerant leak or a problem with the compressor, it may not be able to maintain the required temperature, resulting in frost buildup and poor cooling performance.
Electronic control board malfunction: Modern refrigerators often have electronic control boards that regulate various functions. If there's an issue with the control board, it could lead to incorrect temperature settings or inconsistent cooling.
Since diagnosing refrigerator issues can be complex and require specific technical knowledge, it's recommended to contact a qualified appliance repair technician to inspect and diagnose the problem accurately. They will be able to identify the underlying cause and perform the necessary repairs to ensure your refrigerator works properly and maintains a consistent temperature over time.