I have a 5 year old goodman 92 that is giving me 5 blinks on the main circuit board. It goes through the start-up routine and after about three attempts the burners will stay on. What does that really mean?

Look on the inside of the door of the furnace. There will be a list of codes printed there.

Most likely you have a bad or dirty flame sensor. Also chek the wire from the circuit board to the sensor.

I have a 3 blink which is block open I don't know what it mean. Any help please

My goodman furnace starts but only lites once in awhile to only run for few minutes then the flame shuts off anf the fan blower just runs and the red led blinks 6 times then blinks another 6 times then again 6 times until I just shut it off. What could it be? I cleaned the flame sensor and had to replace the igniter becase it just it just crumbled in my hand. But still doesn't work right! Please help me out! My kids are freezing!!