Mixing valve not getting hot enough
Newbie here looking for some help. I have a Hansgrohe mixing valve that is not letting enough hot water in. I noticed it this fall when it started getting colder and I needed a hotter shower.
My shower is set up that one handle turns on water and another handle for the mixing valve controls the temp. When I turn on the water I can feel the hot water side of valve getting adequately hot. The temp handle moves 270 degrees, and when I turn it all the way cold, it gets cold but not full cold. When I turn it all way hot it gets almost warm enough for comfortable shower.
I have searched the net and cannot find any answers so I thought I would hit up the members here.
1. Do I need a new mixing valve?
2. Can I adjust the flow of hot water into the valve?
I am thinking maybe the valve has some built up scale on the hot side and is not letting in enough hot water.
See attached photo of my valve. Thanks in advance.
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