So I bought & installed (hubby installed lol) a couple of used Ritchie auto waters, and now that it’s cold enough for the heat to kick in one is frozen and one is too hot. I’m sure it’s a thermostat problem as I have confirmed both have a good power source. But I have no clue where the thermostat is ðŸ¤¦ðŸ¼”â™€ï¸ They are older orange metal waters, nothing that looks like a temp control knob or anything inside. Please help this blonde non-mechanically inclined girl while hubby is out of town lol