Which board? I have tested on X10 and currently have an X11. The plugin is based on specific ipmi commands for different models. If your bmc firmware isnt updated or consistant with other models this may affect it also. Recently I was made aware also at least one bmc firmware puts spaces in the fan names. The plugin expects FANA, FAN1.... I haven't implemented an update yet to trim out the spaces yet. The full speed setting is intended so the bmc doesn't try controlling the fans while fan control is running.