- May 19, 2009
- 1
What was the resolution to this issue?! I have the same problem. Back-up valve is fine, no line restrictions, 480 cleaner dismantled and reassembled; all parts in perfect working order. New pressure relief valve blasts water whenever booster pump is on, unless there is nothing at all connected to it. It blasts water even when the cleaner and back-up pump are removed and only the feed line to the cleaner is attached (feed line and swivel connectors are clear and operating). This has to be a faulty relief valve, right? Calling Polaris got me someone who understood this system much less than I do.