Fault codes covered
83-11, 83-12, 83-13
The VFD monitors multiple compressor current conditions and will limit or reduce compressor speed if the current rises above threshold. Current limits are model specific. While codes are active the VFD will continue to operate compressor at a reduced or limited speed, and fan operation will not be affected directly. This code will clear once compressor current drops below threshold. This code indicates the compressor may have minor damage and requires slightly higher torque (current) to operate at desired rpm. If damage continues to worsen the compressor may cause code 83-15, 83-55, 83-16, and 83-56. Check system for overcharge and indoor/outdoor coil blockage as well as input voltage. Listen to compressor during operating for abnormal noise indicating physical damage. If code persists or compressor has abnormal noise, replace compressor.
Source: ACHPVSR454-02SM troubleshooting pages.