Furnace troubleshooting

Most Frequent Lennox® Furnace Error Codes (and What They Mean)

While your Lennox® furnace can’t talk to you, it does have a way to tell you about a furnace error.

Its control panel has double LED lights that can show a fault code. Based on the fault, your furnace could show steady or flashing lights.

Though there are certain simple furnace repairs you can complete on your own, the majority of services are best taken care of by the professionals. When your heating system refuses to start or provide warmth, contact Air Concepts of Middle Georgia at 478-200-5689 for skilled furnace repair in Middle Georgia.

Our technicians will rapidly identify and handle the malfunction, even if you don’t have a Lennox heating system. We can repair all kinds or models—and get the heat reintroduced to your house quickly.


What Does the Flickering Light on My Heating System Mean?

Your heater uses lights to flash code when it needs to be repaired. It also engages these lights to tell you it’s running correctly.

Normal heating consists of:

  • Simultaneous slow flash—furnace heating like it should.
  • Both lights flash fast—heating system is starting to call for heat.

If you notice a solitary light flashing slowly and the other going on and off fast, your heating system could have a low flame signal. This can occur even when your heater is heating properly. It means the flame sensing rod could have build-up or in the bad location on the burner. Call us at 478-200-5689 for support.

Here are several other of the most typical faults for Lennox furnaces.

Heater Refuses to Turn On

Here are many of the light patterns you may notice when your furnace will not or keep heating. Most of these issues have to be fixed by an expert, for instance from Air Concepts of Middle Georgia.

  1. Both LED lights are off. This indicates your heating system might not have electricity. Look at the breaker box to make sure the heating system fuse has not triggered. Attempt to reset the fuse if it is in the “off” spot. If it rapidly turns off after a subsequent reset, don’t try to reset it again and contact us at 478-200-5689.
  2. A single light is unchanging and the other is flashing slowly. This signifies the flame rollout switch is possibly malfunctioning. The part is an essential safety mechanism that aids in avoiding fires and carbon monoxide. You shouldn’t attempt to repair this malfunction yourself.
  3. One light is blinking rapidly and the other is flickering slowly. This likely means power polarity has been reversed. Your heater might have a wiring problem that needs specialized support from Air Concepts of Middle Georgia.
  4. All lights are flickering slowly. This means your heater’s blower motor probably isn’t operating. This component distributes warm air from the furnace into your space. We can help in figuring out what’s causing an issue with this part.
  5. An individual light is blinking slowly and the other is blinking fast. This indicates your heater may have not enough voltage or a short circuit. Reach out to our technicians at 478-200-5689 for assistance.
  6. One light is flickering on, on and off while the other flashes on, off, on. This signifies there might be a malfunction with your furnace’s control panel or wiring. Air Concepts of Middle Georgia can find the fault and repair it.
  7. The duo of lights are using alternate slow blinks. This indicates your HVAC system possibly has a flame error. There might be trouble with its gas supply, gas valve or ignitor control. Get in touch with us at 478-200-5689 for help.
  8. One light flickers slowly while the other remains steady. This usually indicates your heater’s limit switch is experiencing an error. The switch stops your heater from getting too hot. Contact the professionals at Air Concepts of Middle Georgia for support.

Heating System Blower Operates But No Warmth

Here’s what may be broken when you hear your furnace’s blower fan on, but you aren’t receiving any warm air.

  • The duo of lights display alternating quick flickers. This means your furnace ignitor could be broken. This part lights fuel in your heater to create warmth and should be repaired by an expert from Air Concepts of Middle Georgia.

Depend on Us for Expert Furnace Repair

When you need to get your HVAC equipment in working order without delay, trust the experts at Air Concepts of Middle Georgia. Our pros will take care of the issue without delay and have your residence feeling relaxing again in a short time. Get in touch with us at 478-200-5689 or contact us online to schedule an appointment now.

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