makolber wrote, on Sun, 21 Dec 2014 04:53:55 -0800:

Some of these controllers sense the small electrical
conductivity of a fire as a flame sensor. Since the
fire is grounded, the flame sense ciccuot senses to
earth ground. To do that, the conntroller needs a
good earth ground and it gets that through the ac
connection. All 3 wires of the ac connection have
to be correct. The black has to be hot. The white
neutral and the green or bare ground. Check that
these 3 connections are correct, including the
ground connection. Also chech that these is no
sign of water on the electronics. Also chcck
the flame sensorrobe wire is not shorted or has water.

The area is in a crawlspace that is *above* the house, so,
it's pretty dry. At least, I don't see any moisture anywhere,
even though it has been raining (thank God) outside.