Raypak 2100 335A digital heater not working, please help

[Watermom]

Anybody able to help Stan?

[jenmenke]

This is a year old so I'm sure you have it fixed, but I have the same heater. It's the circuit board. I've replaced two. Make sure when you replace you get the new LCD read out with it or you won't see the LCD numbers as you describe. My second one is on the way out and I'm here trying to decide whether to get a new heater or replace the board AGAIN.