Goodman GMS90703BXA Heater - Page 9 - Answered Questions & Fixed issues

Open the front panel of the furnace to see the blinking light. It usually indicates a code based on the number of flashes. Check the inside of the panel for an electric diagram. You will find a troubleshooting chart. Match the code and find out the problem. Sometimes the troubleshooting chart can be found in your furnace manual. Good luck!

Isnt there a lable on door or cover telling what those three blinks mean.

Hello, yes you are are correct. If you remove the green wire from the G terminal at the board and blower keeps running, the relay is stuck and the control board must be replaced.

when a high limit opens it tells the board that there is to much heat. The board shuts down the gas valve and turns on the blower. Find the limit that is open, sometimes you can reset them but most of the time you replace it. When you either change it or reset it, after power down then up, it should go back to normal.

Check your exhaust pipe if it is clear from any snow blocking it. Ice can also obstruct the exhaust pipe preventing the furnace from starting.

Check for obstructions in the exhaust pipe. If it can't exhaust the combustions, it will shut down as a safety issue.

Check your thermostat. Make sure the fan is on "auto" and not "on".

Hello, sounds like you are referring to the burners. Usually when this happens the whole burner assembly must be cleaned, spider webs and dust clog up the burners.

Hello, the pressure switch is a small plastic or metal round looking switch located in the upper left hand portion of the Furnace. There will be a small tube and two wires attached to it.

Hello, if you have power to the furnace but no power to the inducer motor terminals, most likey the control board is malfunctioning. However make sure that you have 24 volts at the w and c terminals on the control board to verify that you have a call for heat from the thermostat.

It's most likely a saftey device being triggered. Check that the exhaust pipe is not blocked. Check the inside panel of the unit for a blinking light, it usually indicated a code that can be checked in your manual. Good luck!

unit will not light after the first cyclelight blink 3times

Hello my name is Heath it will be my pleasure to assist you. First thing to do is go to the furnace take off the lower blower door and locate the circuit board turn the power off to the furnace. In the circuit board there should ba a small car like fuse usually 3 or 5 amps check the fuse it is probably blown replace the fuse with the same amperage fuse and then turn the power back on on the furnace and check the operation of the furnace.

I am not a furnace tech but, there are several inputs to a gas valve. There must be an 1) electrical/mechanical indication that there is a draft fan running (to move potentially explosive gas so it doesn't accumulate), 2) adequate gas pressure to the valve, 3) the thermostat must be calling for heat 4) and electrical indication that there is an ignition source. In your scenario, you have the source of ignition, the gas valve is picking up the burner but the gas valve believes there is something missing so it shuts off the gas to the burner. In this case, I suppose you might not have enough gas pressure (is another gas appliance running or is the line to the furnace too small?), a thermocouple probably isn't the problem since the burner wouldn't pick up if the gas valve didn't believe the ignition source wasn't good enough. You could have a plugged chimney or exhaust pipe if it is direct vented since there is also a pressure switch that detects whether there is enough draft once the burner picks up. Really should call a furnace person especially if you don't have a carbon monoxide detector that you trust. If you think you are capable of continuing, you could jumper the various inputs the the gas valve one by one until the burner picks up and stays picked up. Whichever terminals you jumper that accomplish this, is the culprit. Look at the schematic on the side cover to the furnace for this information. Hope this helps...

Hi,Here is a tip that will help you try to figure out why your furnace is notworking.BasicFurnace or Heating System Troubleshootingheatman101 ';';

Hi,Here is a tip that will help you try to figure out why your furnace is notworking.BasicFurnace or Heating System Troubleshootingheatman101

Hello, if you are getting a 120 volts to the ignitor and yet does not glow it must replaced, however if you are not gettig 120 volts it could be a problem with the pressure switch

Hello, one way to check is remove the green wire from the G termimal on the circuit board in the Furnace, if tnHis turns it off it may be a short in the tstat wiring or bad thermostat, if it does not turn it off the relay on tne control board is stuck and tne entire board must be replaced.

igniter could be cracked and not glowing or pressure switch is not working also check filters are clean

you could try check the AFC automatic fan control which brings the fan on temp rise and shuts off on temp fall, see if its clean on the back of it, check filters are clean try cleaning flame sencor , the afc inside the cover the temp dail turns back when cooling see if this sticking none of this will cost you, just time.