The 5E error code indicates a defrosting issue. This occurs when the system cannot properly defrost, often due to ice buildup on the coils.
Dust or dirt buildup on the coils can cause the system to freeze.
Low refrigerant may prevent the system from effectively defrosting.
The defrost sensors may not be operating correctly.
Make sure the coils are free from dirt and debris.
Low refrigerant levels may need to be topped up by a technician.
Have a professional inspect and replace the defrost sensors if necessary.