I recently completed RT from Oregon to Kansas over 30 days. The last week of the trip, the blackwater tank flush would not work. I hooked up the hose, turned on the water, and no water would enter the tank. Previously I had a quick disconnect attached to both the BW flush inlet and fresh water inlet. Once (actually twice
) I inadvertently hooked up what I thought was the fresh water supply hose and almost overflowed the BW tank! So I took off the quick disconnect to the BW inlet to prevent getting it mixed up with the fresh water connection. I purchased a pressure valve to use on the fresh water connection on the advice of one of the RV parks where we stayed. I haven't been using it on the BW flush connection. Should I use the pressure valve on the BW flush tank inlet too? I'm afraid I may have screwed up something in the BW inlet with the high pressure!
Have any of you experienced problems with your BW tank flush? Is there something I could try before I take it to the dealer (it's still on warranty)?