Hello. I hope someone can help! Yesterday I had only hot water running in my upstairs shower and assumed it was a valve problem.. . But this morning I have no water, not even a drip, and when I run the water in the sink in the next room it comes up the drain of the shower and does not drain back out. All of the other faucets, toilets and showers/tubs are running hot and cold just fine. Any ideas?? Thank you in advance. :confused:

The problems are definitely separate... but possibly coincidentally related.

Has it been cold enough that you might have frozen supply and drain lines?

It has been quite cold. It is possible that the drain line may have frozen. But I am getting water and drainage to the rest of the bathroom. Does that make sense? Is there anything I can do to check or unfreeze the drain without involving a plumber?

hello. i hope someone can help! yesterday i had only hot water running in my upstairs shower and assumed it was a valve problem. . . but this morning i have no water, not even a drip, and when i run the water in the sink in the next room it comes up the drain of the shower and does not drain back out. all of the other faucets, toilets and showers/tubs are running hot and cold just fine. any ideas??? thank you in advance. :confused:

Hi Jamie,
Are you on a well or city water?
Sounds like you have more then one problem. The lavatory drain's blocked and needs to be snaked out from the roof vent. The shower valve has crud or mineral build up in the inlet ports. You will have to shut the water off and open up the valve. First clean out the cartridge ports and then turn the water on for a minute and flush out the supplies and valve body. A freezeup is doubtful inside a heated house so I'm discounting that. Let me know what you find. Tom

Hi tom. Thank you so much for the response. Luckily, the water came back on. We had a deep freeze on wed. night and I think what happened is that the previous owners installed the shower/tub and did not properly insulate the pipes. We are going to have to cut a hole in the drywall so we can insulate the pipes. The drain also cleared, so I guess that had something to do with the cold as well. Thank you again.