Hi, I have a Ruud Achiever 90 Plus unit. New in 2004. Just last Sunday after we had the heavy winter snow, we got up cold in the morning. The furnace ceased to operate.
I reset the furnace unit cycles and the flame/burner goes out after few seconds. It goes like that for few tries and locks-out.
Someone suggested to clean the flame sensor, which I did so and it work for about 20 minutes. And I get the same problem flaming out. When the flame goes on, I can see the Yellow Flame LED lights up, I presume it means the sensor detected the flame.
I get a 2 blink error code every time the burner goes out,
One thing I noticed is that there is moisture (trace of water) at the bottom of the pressure switch that goes into the exhaust blower. I didnt get the chance to check the P-Trap for clogs yet.
Its been 2 nights that we are in the cold. Is there any other suggestion that I should look at to get this fixed by myself? I hope I can resolve this tonight to make my wife happy. =)
Thanks in advance.