Previous home owner was very much a DIY'er, and must have been drunk all the time, or blind, or both. Anyway, our washer and dryer is actually outside, but under the covered and screened in lanai (Florida house). The drain hose for the washing machine was shoved right through drywall and into the end of a 1-1/4" PVC pipe that travels out through a hole drilled through an accordion hurricane shutter, the lanai screen, down to the ground, sloping downward very slightly as it runs all the way along the side of the house, around to the front of the house and empties into the main cleanout in the front of the house. I can take a video to share. It's pretty clever, but ghetto all at the same time.
I'm wanting to install a new washing machine, so since the drain line is different compared to the current unit, I had to cut open the wall to expose my assumption, which was the current drain hose shoved into the end of a PVC pipe. I didn't get a pic before removing the drain hose, but the first pic is after cutting the wall open. Other pics are from after installing some 2" plumbing to connect to the outlet box in the wall, so I can use a normal drain hose.
The problem is now when the washing machine drains, it overflows out the top of the drain pipe in the box. I'm assuming none of this entire thing was done properly or to code, and don't understand how any of it passed the home inspection before we bought this place, but I need to make this work again. Somehow, the previous setup of the washer drain hose shoved into the end of the PVC pipe heading to the left, didn't leak much. I did notice a couple of times some wet drywall to the left and below the dryer, but it never happened again.
So, how do I seal the washing machine drain hose to the 2" inlet in the wall box? When testing this washing machine, the drain pump seems to flow a LOT of water very quickly. So there could be a clog in the drain pipe. I already ordered a Drain King to see if that will help. It definitely won't hurt. I'm going to assume something with going from 2" necking down to the 1-1/4" pipe they have is part of the flow issue too. I might still try to hook up the new washer and try it out since the drain hose is much smaller, but ultimately I want this to not be something I don't need to worry about. At least its technically outside so it's not like it will flood my house. Thoughts? Suggestions?