Non-Defined Error Code

What does EF (6607 or 6608) mean?

This code is displayed when the unit receives an undefined error code. Possible root causes include noise in the remote controller transmission wire or indoor/outdoor connecting wire, the outdoor unit not being an inverter model, or the use of an incompatible remote controller model (PAR-S21A).

• Unspecified error code detected by the system.
• Potential software anomaly or unknown operational state.
• Requires further diagnosis based on system logs.
• Check for other active error codes.

Click steps to track your progress.

1. 1

   Turn the power off, then on again. If the abnormality reappears, replace the indoor controller board or outdoor controller circuit board.

2. 2

   If the outdoor unit is not an inverter model, replace it with an inverter model.

3. 3

   If the remote controller model is PAR-S21A, replace it with an MA remote controller.