Turn the furnace off and leave the house.
Goodman furnace won t ignite 4 blinks.
This means that the blower is not working or the pressure switch circuit has a short in it.
It doesn t matter what speed the blower is running at but the furnace must have sole control of the fan.
Stop immediately if you smell gas.
If you have your fan set to on at the thermostat instead of being set to auto this will cause the furnace to not ignite when called upon.
It is typically located either beside or behind your furnace if you are having a difficult time finding it.
1 led flash blinking on and off this means the furnace locked itself out because it tried to ignite three times and could not do so.
All you need to do is locate the gas supply valve and rotate it in a counterclockwise direction to open it.
The goodman furnace may not be receiving an adequate gas supply if the glow ignitor turns on but the furnace cannot ignite.
Goodman furnace 4 red led blinks indicating high open limit.
One setup that commonly creates this condition is use of the blower fan.
Find the gas supply valve next to or behind the furnace and rotate the valve to the open position typically by twisting counterclockwise.
This may be the case if your goodman furnace won t ignite but the light is on continuously.
One of the most common culprits of a furnace that is having a difficult time lighting is a low gas supply.
Your furnace will automatically try again after an hour of lockout.