Hey all. I pretty much install Rheem/Ruud and can't say I recall any error code similar to this. The unit is about 2 yrs old. It's an 80 single stage.
When I arrived I was getting a fault code 8 flashes. Hard lockout. It says that gas valve mis wired (no, it's run fine for two years) or gas relay stuck. This was their first time turning the heat on this year. I cycled it about 15 times and all is perfect. Does anyone have an idea what would cause this code? As I said, I can not recall seeing a code like this on most other systems.
I have to go back with air cleaner parts and just wonder if that gas valve hung up over the summer if it would give that code. I guess I could shut the gas and see if that 8 code pops up. Just curious.