So I checked everything and found that the shower heads are all turned off at the handles, and there is no water heater bypass that I can see (I can see the tube that goes from the water pump, to a 3 way junction, where 1 hose goes to the water heater cold inlet, and no valve anywhere along there). So I'm at a loss, where can the hot water be mixing with the cold?
I have noticed the hot water mixing with the cold on the kitchen sink, as well the shower. It was worse with the shower, it would get scalding hot when the water pump kicked off, and then get back to comfortable temps when the water pump kicked on.
Any other ideas? Thanks!
