I suspect Joy has one of the early models - the EX1800 - without the
diagnostic mode. I'll bring tools and what spares I have.

Karl
www.propexusa.com

>    Joy, I will be there and Karl is supposed to be there also.  So between
the two of us Propex dealers we should be able to fix your problem.  It
cannot be a big one.  There is a self diagnostics program in the heater
which display flashes of the red light when it will not start.  So we need
to start with that and find out how may flashes there are.  See your install
manual that came with your heater or see it on line here >