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I'm a relatively new townhome-owner and I'm troubleshooting a furnace issue. My home isn't heated, and more specifically, air does not flow through the vents despite turning on the fan via thermostat. I watched about an hour's worth of videos to get a basic idea of furnace functionality and startup, and noticed that my control board status light is a constant red, but that meant normal conditions for my model.

I tried observing my furnace startup process and I set the thermostat to a higher temp with fan set to On. I hear a click, and then furnace turning on, I see the pilot light ignite, and the inducer motor spinning. I ended up watching for a couple minutes and the pilot light stays on and the motor is still spinning, so I don't think it's short-cycling. I wait a couple minutes longer, but in the end, there's no warm air being pumped through the vents.

My model is a Goodman GPD050-3 forced air furnace. From the videos, it seems that lack of air through vents means I should check out the blower motor and/or air filters, but I cannot find where those are located in my furnace. Maybe I'm missing something about how my furnace is set up and I need to look for more specific videos/guides on repair? Thanks!

Front of furnace

Side of furnace

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  • What blink codes are you getting on the control board?
    – KMJ
    Commented Mar 7 at 7:42
  • Currently solid red. According to the table in the furnace, this is one of two issues: 1. Constant: None 2. Continuous: Incorrect twinning, check polarity I'm not sure whether a solid red light would be constant or continuous though
    – ShallowBlue
    Commented Mar 7 at 7:46
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    "the pilot light ignite, and the inducer motor spinning" and then what happens? You get a flame for two seconds? Then clean the flame sensor. - Otherwise the gas valve isn't opening; or there's no gas to it.
    – Mazura
    Commented Mar 7 at 8:31
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    Where do you replace your air filter? Or are you filtered at the return?
    – Huesmann
    Commented Mar 7 at 13:13
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    @Mazura could also be a pressure sensor problem. Checking the sequence in the manual will give the best troubleshooting steps.
    – KMJ
    Commented Mar 7 at 18:25

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I'm gonna guess the blower is here.

enter image description here

Those wires top right are for something.

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  • Thanks for taking a look - I assumed those wires were for the heat exchange at the back of the furnace, but I definitely should take a closer look at that portion after work. Thanks!
    – ShallowBlue
    Commented Mar 7 at 16:25

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