A0770 alarm in WEG CFW500 Drive indicates Filter Maintenance is needed. This means the running hours of the system have exceeded the programmed threshold for filter replacement.
Cause:
Parameter P1050 is programmed for 1, and the total motor operation time shown in P1052 is above the value programmed in P1051.
Remedy:
Perform scheduled maintenance to replace the system filter. Reset the elapsed timer if required.
