Error 73 - System overload or component failure

What does 73 mean?

This error code indicates potential issues such as system overload, damage to components, abnormal input voltage, or a faulty inverter PCB.

• Overload operation (e.g., pipe restrictions, restricted airflow, EEV defect, overcharged refrigerant)
• Compressor damage (insulation or motor damage)
• Abnormal input voltage
• Power supply wiring issues
• Damaged ODU Inverter PCB assembly

Click steps to track your progress.

1. 1

   Check for and rectify any conditions causing system overload, such as restricted airflow or pipe blockages.

2. 2

   Verify that the compressor is not damaged and connections are secure.

3. 3

   Measure the input voltage to ensure it is within the specified range.

4. 4

   Inspect the power supply wiring for any defects or loose connections.

5. 5

   Check the ODU Inverter PCB assembly for any signs of damage.