Like the title says something is wrong.
Powered up, fan is on readout showed a "1" to the left side of the display.
Powered down, powered up again and the display is randomly flashing numbers
from 0 -300+ Depress foot pedal, gas solenoid opens, crackling noise inside and no
power output.

First real fail in 3 years of faithful service.

I figure it needs to go in for warranty service so what do I need to do?

Would posting the S/N here help?

Thanks in Advance