It would be interesting to connect a 120 volt clock between 1 of the 120 heating element wires. So, when the refer is calling for 120 heat, that clock comes on. You then set the clock to current time and then see if the clock ever loses time. That would tell you the board is stopping power to the element. Of course, IF the refer reaches temp, then the 120 power to the element and clock will shut off. That is why you would need a mechanical clock if you can still find one. You could determine how much time the 120 was off or if it stayed off. Doug
PS, I would think a standard mechanical xmas light timer with the pull and set pins would be perfect. You leave out the OFF pins and leave it on all the time unless power is interrupted. You would wire from the control board to a 2 pin 120 plug. plug in the timer and then make a adapter pins to plug the 120 element into the output of the timer. Set the timer at what ever current time and let it go.
