Fault codes covered
82-11
The VFD monitors input current and will limit or reduce compressor speed if the current rises above threshold. Current limits are model specific. While code 82-11 is active the VFD will continue to operate compressor at a reduced or limited speed, while fan operation will not be affected directly. This code will clear once VFD input current drops below threshold. Low input voltage combined with high load is the most likely cause of this code. Check system for overcharge and indoor/outdoor coil blockage as well as input voltage.
Source: ACHPVSR454-02SM troubleshooting pages.