Almost new JXI 600,000 natural gas heater comes on ignites and shuts off x3 . Error code Ign comes up. it was working one day and not the next. No power. Pool guys came out and discovered the PCB had melted. They replaced that board and the unit power up But would not fire up. They then replaced the entire electrical component tray including the transformer . Unit comes on ignites and shuts off. Had gas plumber out ,replaced the regulator. He says gas supply is not the problem. Is there a separate flame sensor on this unit,or is it part of the igniter? I noticed (and I’m not positive) when they put a new igniter in it looked like the one listed for an LXi heater. The one for a JXI looks different on parts lists I have looked at. It’s been going on a year now and no one seems to be able to help. any guidance would be most appreciated.
Thanks
Thanks