I looked through all the old posts but didn't find an answer to my issue. I have a natural gas Sta-Rite 400NA heater. It was working fine but decided to quit out of the blue.
When I raise the temperature up via remote to activate the heater, the control panel turns on, then it says 128, then r=5, then goes completely blank. I flipped over the top to check the LED's...at activation they all light up, but then they all go dark. I opened the Ignition Control door to see if there's any fault lights there...also nothing.
So, I guess my question is: which part do I replace first?
Is it possible to be something other than the upper control board or the ignition control module?