[Richard]

I am the most dense, in that I do not understand what Tstat Alan is using. I do not understand what he means by fan goes to low. AC fan? Aquahot kick heater fan?

As shown in Jeff’s pic, if a Tstat has the heat function, it is usually the white wire or terminal. It will connect to yellow with red stripe wire. This turns one the fans for the kick heaters. It does not turn on the Aquahot as others have stated.

The aquahot/AC switch at the microwave panel has caused all kinds of confusion over the years. If flipped to AC the electric heaters in the AH will not activate. If flipped to Aquahot, the ACs will not energize. This is a separate switch from the Aquahot Diesel activation switch.

Why repeat all that? Over the years some owners rewired that energy management switch so that they could get electric AH heat AND AC use. I realize I am making the same points that Jeff and Gordon made.

Look for a grey rectangular box below the 120 panel in the rear closet. Have someone flip the AC/Aquahot switch while you are standing close to the box, and you should hear it click.