Funfinder 242BDS water heater bypass valve

I have the slide out outdoor kitchen and pulled the fridge out but no access panel there. I can see the hot water tank through the fridge compartment vent. Hesitant to start cutting holes...

Do you have a out side storage near the hot water. My floor of it comes out and that is where you find it

The valves are mostly located on the back (interior) side of the water heater. So approximate where that cavity is from the inside of the TT and then figure out how to gain access. Sometimes it will be a removable panel, but there are other ways, like drawer removal, cabinet side panel removal, access from pass thru storage, etc....