A0782 alarm in WEG CFW500 Drive indicates an unprogrammed Digital Input for External PID Auto/Manual selection. This means the external PID requires a toggle input, but none is configured.
Cause:
Parameter P0263, P0264, P0265, or P0266 was not programmed for option 21.
Remedy:
Set the assigned digital input parameter (P0263 to P0266) to 21 to enable manual/automatic switching functions.
