Sterlingrepairs
Member
After a plumber installed a Delta Multichoice valve with a single function cartridge, the shower gets hot water only if turned to max which is too hot. But if the handle is turned down just a little, the water is too cold. The plumber is blaming it on the water heater, but the other shower in the house works just fine. He replaced the cartridge with a new one and still the same problem. How can this be fixed?