crager3

I have a 1990 Hot Springs Classic that has been turning it's heater off for awhile now. I bought a new thermostat and want to install it. The thermostat instructions talk about a DC to AC conversion, but my hot tub is plugged into a 110 wall outlet. Also, how do you get into the control box? My tub is installed in a deck so access is through the flip up door under the deck. Any help would be appreciated.