Error 84 — Current sensor error

What does 84 mean?

This error occurs when the Input Current sensor detects 0A while the Inverter Compressor is operating at higher than 56rps, 1 minute after starting (except during defrost). The outdoor unit shows no indication.

• Defective connection of outdoor unit electrical components
• External causes such as voltage drop or noise on the power supply
• Outdoor unit Main PCB failure

Click steps to track your progress.

1. 1

   Reset the power supply to the air conditioner and observe if the error indication shows again.

2. 2

   Check for external causes like voltage drops, momentary power failures, or noise-causing equipment in the same circuit. Ensure proper grounding insulation.

3. 3

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