My Polaris 280 is making an odd sound at the connection, but only when it's not running but the pump is. The sound is an odd high-pitched pulsing whine- almost like a whistle.
It does it even with the hose disconnected. It goes away when I cover the hole in the blue restrictor with my finger (basically when I plug it up). I removed the restrictor completely - same noise.
Just started today. Is this something to worry about?
I recorded it with my iphone and tried to attach the file, but the board wouldn't accept and .mp3 attachment and all the other formats are too big for the 256k limit. But if someone knows a way to do it, I'll post it.