I am having trouble with my ultimate heater in my automatic bay starting. It will spark and turn the gas on but it fails to light at least 65% of the time. It will try to light 3 times then shut down for a period of time then try to relight again. I totally disassembled the burner assembly and checked all orfices and burner tubes for dirt. I have replaced the gas valve, igniter module, igniter, fan motor, and nothing has helped. By the way the 7 year warranty on this heater covered none of these parts. I am beginning to wonder if it covers anything.
The best luck I have had is adjusting the pilot, step, and regulator screws on the gas valve. This is very touchy though. I get it to where it will light perfect for a few times, then its right back to where I started. If I remove the air intake pipe and run the heater without the vent pipe it also helps a little. Any ideas on how to get this thing to light reliably?
The best luck I have had is adjusting the pilot, step, and regulator screws on the gas valve. This is very touchy though. I get it to where it will light perfect for a few times, then its right back to where I started. If I remove the air intake pipe and run the heater without the vent pipe it also helps a little. Any ideas on how to get this thing to light reliably?