Goodman furnace wont come on

Replace the board.

If I remember correctly, there are dip switches on that control board that can be set individually. It is possible that it is just a setup issue. The switch positions should be explained in the installation instructions. I know that some Goodman and Amana two stage furnaces can be controlled by a single stage thermostat, but the dip switches have to be set properly. If the switches are set correctly the furnace will run in low stage heat for approximately 5 minutes and if the thermostat hasn't satisfied yet, it will kick in to high stage heat. I hope this points you in the right direction!

The problem is too much gas as opposed to not enough air. It is still running rich. Did you take into account the elevation of the location your furnace is installed at. The higher above sea level the less air that you have to aid in cumbustion. The condensation is from excess gas being cold and causing water to accumulate. Can you run it like this? Yes but it will cause issues with soot and carbon deposits. It will also cost you more money in the long run.

Make sure the kit included smaller sized orifice's and spring kit for the gas valve. The number on each orifice should be cross referenced with total btu's rating of the furnace. It does seem like there is too much fuel or not enough air intake (combustion air). The inches of W.C. seem fine, but you still may be getting too much volume of fuel with too large of sized orifice's. Hope that helps

humming noise from motor means it is seized

Do not assume that the pressure switch is bad nor the vent motor. The first thing to check is the vacuum hose from the pressure switch to the vent motor. Sometimes they get moisture in them and sometimes they get clogged in the start tube on the vent motor. Take a small needle or paper clip and clean out the start tube on the vent motor. Check the hose for dry rotting or leaks. Cut the ends back about an 1/2" if you have enough hose extra and then re-connect. Next step is to check your flue pipe for a restriction like a birds nest or a wasp nest in the outside termination point. Then to eliminate the vent motor from the equation, take the vacuum hose off the vent motor start tube and with the furnace calling for heat , **** on the hose to keep a constant vacuum on the pressure switch. Watch the ignitor glow or spark ingition start to spark. make sure it lights the burner runners and all burners are lite. usually the ignitor is on the first burner and then there is a flame sensor on the last burner. If the flame does not ignite to the last burner the flame senor will kick tell the control board to turn off the gas valve and shut down. If this happens pull the flame senor out with a 5/16" nut drive and clean lightly with sand paper and re-install it. Start the process over and you should have sucessfully fixed your furnace. If the constant vacuum does not bring on the ingnitor replace the pressure switch.

my guess would be a problem with the low voltage wiring a short have it checked out by an electrician

If the draft motor starts then shuts right off and then a red light comes on usually means that there is a blockage somewhere. Check the pressure switch line, make sure that it is clear and the hole in the heater that the pressure switch vaccum line runs to is open. If that checks out then make sure that your flue vent cap is on and that it is not pressed down on the flue vent and that the gases can vent properly

The power ventor most likely needs to be replaced. But be advised. Goodman normally will not sell parts to anyone but a certified technician. I had to show my masters certificate to buy parts from their outlet. This is a part that has a high rate of failure.

Ray

You need to type GOODMAN GAS APPLIANCES into you browser to find you local servicecenter. I must tell you that Goodman only sells to authorized service companies in my experience. So you become EgKraft Company.