Hi,
Our water heater does not hold a steady water temperature. When I shower the water temperature can fluctuate between almost scalding hot to quite cold without me touching anything. I'm guessing it's a problem with the water heater, because the same thing happens in both showers and the bathroom sink as well.
I have a Rinnai water heater, though I'm not sure which one exactly. It sits outside and has a digital control panel inside with the model number MC-45-SR. We set it to 40 degrees.
Is there anything I can do myself to try to fix the problem or diagnose it further? Or is my best bet to call Rinnai and have a technician come look at it? Or maybe someone can recommend a good technician?
Thank You!
