6091 Wave Controller Noise

[pdabj]

I have a 6091 wave controller on a wave maker with the 7240.27 driver. Every hour or so something is making a loud beep. Once I unplugged it no more noise. Anybody have an idea?

Thanks

 

[shawnz28]

probably a dirty pump
http://reefcentral.com/forums/showthread.php?threadid=1071516