Fault codes covered
88-15, 88-55
Communication between the VFD and PCM is monitored continuously. If communication fails, the PCM will initiate a VFD reset in an attempt to restart the communicating components of VFD. The system will shut down and restart after 5 minute compressor protection timer expires. Three occurrences of code 88-15 within a 1 hour period will result in 88-55 malfunction and 2 hour lockout. Inspect PCM to VFD communication harness for damage and connectivity, replace if necessary. If this does not fix problem, the VFD communicating components have been damaged and VFD requires replacement.
Source: ACHPVSR454-02SM troubleshooting pages.