I have hot water running out of all faucets except the tub faucet. I called my oil company and I was told it was the cartridge in the single faucet that needed to be replaced (Moen). I replaced it and the water is hot for a few seconds and goes cold. I turn the heat down on both thermostats and still no hot water. Any idea what is causing this? Thank you.
i have seen this before it could be a couple of things.is your valve equipt with a balancing unit if it is this could be the culprit.if not turn the water off and remove the new cartridge check to see if there is any debris in it if so clean it out,before reinstalling the cartridge turn the water on SLOWLY to blow out any remaning debris.if none of this helps you may need to call a certified plumber.