To add, map faults can occur when a programmer reloads a new map on the panel. as Old Fire Alarm Guy was saying sometimes the mapping sees a device having a T-tap, when in reality it doesn’t, and the new map doesn’t match the same exact wiring style as the previous map. This is caused by the contacts on the smoke/heat base not having a solid connection. Loosening the screws that hold the device to the box or bending the tabs out will remedy this issue most of the time.
I see the most common issue of maps faults being when a device ( high or low loop) is removed and the “in” and “out” wiring is swapped it will cause a map fault. Which was previously stated.
I have never heard of a way to clear the map fault without remapping from inside the program, but that doesn’t mean its not possible.