So how do you unstick that? Or do you just have to replace it then?
First I would verify that the gray tank vent is not clogged (IE no mud wasps or other varmit building a nest).
Second, I would make sure the gray tank (regardless of reading) is not full
Then, if you watch a video on how a Hepvo valve works, and understand it, I would try to force a decent amount of water into it. I have used a water bottle to unclog a toilet (clean water, but no plunger)...fill it with water, then squeeze it quickly into the toilet to force water. A hose would work too....but now you're dealing with an unlimited supply of water and that has its own potential issues.
A plunger would work too...but again, I would be concerned not with the push (but the pull). There are few different ways to skin this cat.
One cup baking soda into drain and 2-3 cups vinegar. Leave overnight, then use some boiling water from kettle to flush. Our drain plugged and this cleared it up. Now we do this as a preventative measure about every 6 weeks
Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989
Car Shredder Op/Tech, Scrap Metal Recycling - retired
Everyone gets confused at some time, some are better at hiding it than others.
Thank you all for your suggestions. I tried the baking soda and vinegar first with no success. So, I drained the gray water tank and problem solved. Really appreciate your help!
Now you know not to trust the tank idiot lights.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity