What Do The Flashing Red Lights Mean On A Goodman Furnace?

Your Goodman furnace cannot talk, but it still communicates with you through the blinking LED lights mounted on the circuit board. These lights are easy to spot and help you understand what your furnace is doing.

A solid amber or yellow means everything is fine, and you have an efficient furnace. However, if you see flashing red lights, your furnace is sending you error codes. Similar to the Morse code, the blinking lights on your furnace indicate specific error codes.

Interpreting And Troubleshooting Issues

Let’s take a look at what the error codes mean and how you can fix them:

  • Signal issues
    If your Goodman furnace cannot receive a signal from the thermostat and won’t operate, your furnace LED will give a single red flash, after which it will steadily stay on. Make sure to check the connection and your thermostat settings if this happens.
  • Furnace Lockout
    If your furnace has tried to ignite multiple times unsuccessfully, it will lockout, and a single LED flash will blink on and off. Not to worry though, your furnace will automatically reset itself after one hour of lockout. You can also try to reset it by cutting off the power at the breaker.
  • Draft Blower or Pressure Switch Problems
    If you observe two LED flashes, your draft blower is not functioning efficiently, or there is a short in the pressure switch circuit. You can either repair the short or have the pressure switch replaced.

On the other hand, if you see three flashing lights, the pressure switch circuit may be open, or the draft blower is working when it shouldn’t. It is a simple fix if you ask professionals for a heating tune-up in Cumming, where they check the pressure switch for blocks or improper connections.

  • Gas, Ignition Failure, and Flame Proving Fault
    If your furnace senses a flame even when there has been no call for heat, you will see five LED flashes. It may occur due to leaky gas valves or lingering flames from the burner.

On the other hand, if the flame is too low (seven LED flashes), the flame sensor may be dirty, or the gas pressure may be too low. Cleaning the flame sensor or adjusting the gas input should fix this. However, if you think there is a problem with the igniter (eight LED flashes) or the gas valves, it’s best to call heating experts like Immediate Services.

  • High-Stage Pressure Switch and Roll Out Switch
    These switches help detect heat and tell the fan to turn off to prevent the heat exchanger from overheating. The rollout switches detect heat where it shouldn’t be. Faulty switches are indicated by nine flashes on the Goodman furnace LED. You can try replacing your furnace filter or contact technicians if it does not work.

Call Immediate Services To Fix Your Furnace Issues Today

You may be able to fix most of your furnace issues by following the above tips. Though, it is always better to seek help from experienced and certified professionals at Immediate Services. We offer many different services like furnace installation in Dawsonville and surrounding areas at reasonable prices. Contact us at (678) 525-8897 to know more.

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