Shower Not Draining

[Carv]

2019 3120RL bought new, only my wife and I have ever stayed in the camper.
Shower does not drain, this started yesterday, sink in bathroom drains fine. Screen at drain has never been removed. Anyone have any idea what could be going on.
Thanks in advance!

[Daryles]

The shower has a "HEPVO" waterless trap in the pipe. You can access it by removing the basement wall behind the convenience center. It's the white thing on the black drain pipe under the shower. Very easy to remove and clean. Make sure you put it back in correctly (ribs down) or it won't work.
Instructions for cleaning are on their website

https://hepvo.com/

Before removing, try pouring BOILING water down the drain. It might be enough to free up the membrane.
Do NOT snake it. That will destroy the internal membrane and you will have to replace it.
Also try pouring a box of baking soda down the drain followed by a bottle of white vinegar. Remove all the water first.

[Foldbak]

Mine drains slowly at times. I found that using my foot and gently stomping on the drain forces the water to flow.

[Carv]

Daryles,
Thank You! Great info I will try the quick fix first and if no luck will remove and clean. I'll update with results.

Foldbak,
I tried a plunger yesterday. Results were good but the problem returned this morning plunger had no effect today.

[DutchmenSport]

Hair causes mine to drain slow.
Clear off the top of the drain strainer, remove strainer (only 1 screw), and use something like a dental pick and fish out the hair caught right under the strainer. On mine, this is where the slow down occurs.

[Carv]

Thanks to everyone for the help. I tried the boiling water with no luck, story of my life. Rained all day yesterday so I waited until today to continue. Removed and cleaned the HEPVO as suggested by Daryles all fixed now. Thank you Daryles problem solved.

[c2itcliff]

I replaced mine with a regular pee trap just like under the sink. Works well. Have considered upgrading to a European style drain, which I like better.

[firestation12]

Use a leaf blower pushed tight against the drain, then after a few seconds blast, dump a cup of Dawn liquid dish soap into the drain, followed by another application of the leaf blower pushed tight against the drain, finish with hot water from the running shower head and intermittent blasts to rinse the Dawn soap. I do this anytime I notice the drain time increasing. It’s easy and quickly fixes the slow draining.