I have a 2022 CS-S and during the tenth-ish setup of camp with the Nautilus in "dry camp" mode I noticed the pump was not pressurizing. The freshwater tank was full. No flow or initial sound of water flowing, just the pump running. Let it run for a couple minutes, then turned it off. Checked the Nautilus panel valve settings - dry camp. Ran the pump again for a minute, no flow / pressure, turned it off. Tried rotating both the green and blue levers, and then put them back into "dry camp" position. Ran the pump again for a minute, no flow / pressure.
Decided to let it run one more time, and suddenly there was the usual water flow sound and pressure built quickly.
Have others experienced this? Is it due to, for some reason, having a completely full freshwater tank?
I'll report back if it happens again.
2022 Tab 320 CS-S Boondock