We have a G6A-8E installed in our 287BHSW and we're having an issue with the water heater. It's a gas-only water heater that won't refire when there's a demand for hot water. It'll run one good cycle and heat up the water in the tank but when that's done forget it. It'll try and will fire for four seconds until it locks itself out.
I adjusted the flame down because it was too lean but it didn't help. Visual inspection comes back clean and I'm puzzled by the normal solutions because it does fire once. Probe is getting red hot when it refires, and I put in a new ECO and thermostat. Issue still happens when I take out the thermistor. Only two things left are the flame sensor and the control board. New ignitor/flame sensor and control board on order but I wanted to get some thoughts.
It's never worked right but I neglected to get it looked at while it was under warranty.
More testing tomorrow.