My tech, and I have talked to HWH and I found out that my tech has all of their testing manuals. There is power to the relay. There is no power to the control board. All testing scenarios lead to "replace board". Originally, I thought the problem was the touch pad board. That is not the case. It's the main board that is in the double case hung from the ceiling in the electrical bay. Because we have air-leveling only, this is a rarely called for item and is expensive.
I found a HWH dealer who has a used one. He will sell it to me for $1140.00 plus shipping. He has tested it as far as he can without it being connected to an air only leveling system. All is good. He agreed to this: if it doesn't solve my problem, he will take it back, and credit the $1140.00 on a new one.
Comments welcome.
Edit: We decided to just get the new one. Warranty from HWH.