If a fridge is tripping a fuse every time the door is opened, it indicates a potential electrical issue that needs to be addressed promptly. Here are some possible reasons for this problem:
Faulty Door Switch: The most common reason for this issue is a faulty door switch. The door switch is responsible for turning off the fridge's interior light and fans when the door is closed and turning them on when the door is opened. If the switch is malfunctioning and causing a short circuit when the door is opened, it can lead to the fuse tripping.
Worn or Damaged Wiring: Over time, the wiring inside the fridge can become worn or damaged due to constant use and temperature fluctuations. If the exposed wires come into contact with each other or the fridge's metal body when the door is opened, it can cause a short circuit and trip the fuse.
Moisture or Condensation: If there is moisture or condensation buildup inside the fridge, it can lead to electrical issues. Water can create a path for electricity to flow where it shouldn't, causing a short circuit when the door is opened.
Compressor or Motor Issues: While less common, there is a possibility that a problem with the fridge's compressor or motor could be causing the electrical short when the door is opened.
Defective Components: It's also possible that some other electrical component inside the fridge has become defective, causing an electrical overload when the door is opened.
Given that the fridge is only 4 years old and had no previous issues, it's likely that this problem is due to a specific electrical component malfunctioning or a wiring issue. To resolve this problem safely, it is highly recommended to seek professional assistance from a qualified appliance repair technician. They can diagnose the exact cause of the issue and make the necessary repairs or replacements.
In the meantime, for your safety, avoid using the fridge until the problem is resolved to prevent any potential electrical hazards or damage to the appliance.