Just bought a new Dolphin DX 5 - have used it a few times in the pool already. I noticed when I put it in yesterday that even before I put it in the water that the "Clean Filter Bag" indicator light was illuminated. I have hosed down the filter bag each time after cleaning, and the Dolphin still operated as usual. Just wondering if anyone has experienced this and if it's something I should worry about. Thanks in advance for all and any help.