Thanks for the video but I already cleaned the burner.
Actually solved it today:
Was looking at the regulator that was for the tankless unit that was installed outside. All the main diagrams didn't have the brass "bolt" seen in the picture below that I have. Well I found out it's a vent...
Water heater model: RTG-95DVLN (natural gas) 2014 build date
So had this heater for 2 1/2 years and just the other day I got code 11. No issues up until this point.
Thinks I have checked:
Igniter sparks during startup.
All solenoids are getting power and show correct resistances...
So I installed a 10" American Standard rain shower head with a Pegasus 17" total length shower arm (1' rise 1' reach).
I love the shower head but the arm doesn't reach far enough. I have to almost hug the wall to get perfectly under the head.
I'm about 6'2" (why I got the rise shower...
