Furnace troubleshooting

Top Lennox® Furnace Error Codes (and What They Mean)

While your Lennox® HVAC equipment cannot chat with you, it has a way to get your attention when there’s a furnace error.

Its motherboard has a set of LED lights that can show a fault code. Based on the issue, your furnace may display steady or flashing lights.

Although there are some elementary HVAC fixes you can complete on your own, many repairs are best taken care of by HVAC technicians. When your furnace refuses to turn on or give heated air, reach out to Oak Grove Heating & Air Conditioning at 601-292-9763 for skilled furnace repair in Hattiesburg.

Our specialists will speedily identify and fix the breakdown, even if you don’t have a Lennox heating system. We can repair whichever brands or configuration—and get the comfort returned to your home quickly.


What Does the Flickering Light on My Furnace Mean?

Your heater uses lights to flash code when it isn’t working right. It also uses this system to relay it’s working like it should.

Regular function consists of:

  • Concurrent slow flash—furnace operating properly.
  • Concurrent fast flash—heater is beginning to call for heat.

If you notice one light flashing slowly and the other flashing fast, your heating system could be experiencing a low flame signal. This can occur even when your heater is heating properly. It signifies the flame sensing rod could have build-up or in the wrong spot on the burner. Call us at 601-292-9763 for help.

Here are several other of the most routine problems for Lennox heating systems.

Heater Will Not Kick On

Here are many of the light arrangements you may notice when your heating system refuses to or keep running. Most of these problems need to be taken care of by a professional, such as one from Oak Grove Heating & Air Conditioning.

  1. All LED lights are off. This means your heater might not have electricity. Check the breaker box to ensure the heater fuse hasn’t tripped. Attempt to reset the fuse if it is in the “off” spot. If it instantly flips following a reset, leave the breaker alone and contact us at 601-292-9763.
  2. An individual light is unchanging and the other is flashing slowly. This means the flame rollout switch is possibly open. The component is a critical safety tool that aids in stopping fires and carbon monoxide. You shouldn’t try to fix this malfunction without professional help.
  3. An individual light is flickering fast and the other is blinking slowly. This typically means power polarity has been inverted. Your furnace could have a wiring issue that calls for professional help from Oak Grove Heating & Air Conditioning.
  4. All lights are flashing slowly. This signifies your furnace’s blower motor possibly isn’t running. This piece distributes hot air from the heater into your home. We can aid in pinpointing what’s causing an issue with this component.
  5. One light is flashing slowly and the other is flickering quickly. This indicates your furnace may have insufficient voltage or a short circuit. Reach out to our experts at 601-292-9763 for help.
  6. One light is flickering on, on and off while the other blinks on, off, on. This signifies there may be a problem with your HVAC system’s control panel or wiring. Oak Grove Heating & Air Conditioning can determine the issue and repair it.
  7. The pair of lights display every other slow flickers. This signifies your heating system possibly has a flame error. There might be an issue with its gas supply, gas valve or ignitor control. Reach out to us at 601-292-9763 for help.
  8. An individual light flickers slowly while the other is steady. This typically indicates your HVAC system’s limit switch is not working. The switch prevents your heater from becoming too warm. Call the pros at Oak Grove Heating & Air Conditioning for assistance.

Heating System Blower Operates But No Heat

Here’s what might be broken when you hear your heating system’s blower fan working, but you aren’t getting any heat.

  • The pair of lights are showing every other fast flashes. This signifies your furnace ignitor might not be in working order. This piece lights gas in your furnace to create warmth and should be serviced by a technician from Oak Grove Heating & Air Conditioning.

Depend on Us for Professional Furnace Repair

When you need to have your heater fixed fast, depend on the experts at Oak Grove Heating & Air Conditioning. Our pros will take care of the problem without delay and have your house feeling comfortable again in a short time. Reach out to us at 601-292-9763 or contact us online to get an appointment right away.

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