Lennox · PRODIGY 2.0 Unit Controller
The inverter has detected a low-level issue affecting performance. This could be related to compressor current, heat sink temperature, or PFC input current. The system may automatically reduce compressor speed.
Click steps to track your progress.
If the alarm continues after outdoor conditions improve, check the fan, refrigerant charge, and coil.
Refer to the service manual's troubleshooting guide for detailed information.
The alarm will automatically clear when the minimum off time expires.