Error 64 — PFC circuit error (Power Factor Correction)

What does 64 mean?

This error occurs when the inverter output DC voltage is higher than 420V for over 3 seconds. If this condition repeats 5 times, the compressor stops permanently. The outdoor unit shows no indication.

• External causes such as voltage drop or noise on the power supply
• Connector connection failure
• Outdoor unit Main PCB failure

Click steps to track your progress.

1. 1

   Check for any external causes like voltage drops, momentary power failures (defective contacts, leak current), or noise-causing equipment (neon bulbs) in the same circuit.

2. 2

   Ensure complete insulation of the grounding connection.

3. 3

   Check all connectors for removal, erroneous connection, or open cables. Correct any issues and reset the power.