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Goodman furnace has solid red light what do that mean?

Red light means on but its not doing any thing. how can i tell whats wrong if light not blinking

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  • Goodman Master
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Steady red light means on

Posted on Oct 26, 2017


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  • 1865 Answers

SOURCE: my goodman furnace lights runs for 15 seconds and

There is no way to guess what the problem is. I am a HVAC tech, I use a meter to troubleshoot the problem, you need to use a meter and troubleshoiot the problem

Posted on Oct 13, 2009



  • 1304 Answers

SOURCE: goodman furnace indicator light flashes four times

this is a overlimit cut out,
whats happening is the internal cabinet is getting too hot, so the system should shut down until that temp drops below safety levels,
this particular problem, usually deals with air flow, your not getting the proper amount of air through the blower.
i would check, your filter here, usually this is the first thing to check before trying any sort of re4pair

Posted on Oct 17, 2009

David Shaub

  • 2976 Answers

SOURCE: Need to find the pressure switch on my goodman furnace

It's mounted onto the gas valve. It will be a button or lever that you have to push in or down, depending on the style.

Posted on Nov 20, 2009


Chandler Ede

  • 1420 Answers

SOURCE: My Goodman High efficiency furnace stopped working

On the panel with the wiring diagram, there is an error code chart. I think 3 flashes is a pressure switch problem. Check your air filter, condensate pump or hoses. Check the small hoses going to the pressure switch, check your air intake and exhaust vents. Remove any moisture or debris. Make sure all venting pitches back to the heating system and no low spots are holding water.

Posted on Dec 11, 2009


  • 25 Answers

SOURCE: goodman furnace model # GMNT100-4B

Solid red typically means bad controller. Try unplugging the furnace, wait about 30 secs, then plug it back in. The possibility that the controller was sending voltage to the valve even when there was no flame is a bad sign. If the controller starts the furnace, watch it very closely and see what it does. If the solid light comes back on, it's time for a new board.

Posted on Mar 24, 2010

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