I have two showers in my house, one seems to be noticeably cooler no matter what I try. Both are Symmons Temptrol model A. The house is mostly PEX except where copper is required.
I cannot take a shower in one because the hot water never gets hot enough. The sink to the same bathroom has nearly scalding water.
I have replaced the spindle assembly and the hot and cold seats hoping that this would help, with no joy.
I have backed out the hot-water limit stop screw to the point where the handle now spins nearly 500 degrees (way way past a full turn.)
The other shower is just bearable but I like a really hot shower. I have resorted to turning up the water heater which has helped, but I feel like I am missing something.
I am not sure if there is an obstruction in the pipes but with the single handle design of the shower I cannot tell the pressure of the hot water in the shower. The sink next to it has what appears to be a normal pressure.
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Is this typical of this style of shower control?
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Does the hot water never fully flow?
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If I do have an obstruction in the pipe what would my next step be?
Best Answer
The troubleshooting section in the installation guide would indicate 2 things. First, you've likely backed the limit screw out too far - assuming the water pressure on the hot and cold sides are similar between the two showers, they should be set in the same range. Second (and more directly related to your issue), you should pull the spindle assembly and make sure it is clear of debris and calcium deposits.