UP — Compressor overcurrent interruption

What does UP mean?

This error signifies that the compressor is drawing too much electrical current, which leads to an automatic shutdown to prevent damage. This can indicate a problem with the compressor or the system load.

• Refrigerant overcharge or insufficient refrigerant.
• Compressor motor winding fault.
• Mechanical resistance or seizing in the compressor.
• Unstable or incorrect power supply voltage.

Click steps to track your progress.

1. 1

   Check for any obvious obstructions around the outdoor unit that could cause the compressor to overwork.

2. 2

   Ensure the outdoor unit's power supply voltage is stable and correct according to the product specifications.

3. 3

   Verify that the outdoor unit's fan is operating normally to prevent compressor overheating.

4. 4

   Power cycle the unit by turning off the main circuit breaker for 5-10 minutes, then restart.

5. 5

   If the problem continues, a technician should diagnose the compressor and refrigerant charge.