Furnace troubleshooting

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

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

Its control board has two LED lights that can display a fault code. Subject to the failure, your furnace may show continuous or flashing lights.

Though there are a few simple furnace fixes you can do without an expert, many services are best left to the professionals. When your heating system refuses to kick on or put out warmth, get in touch with Air Quality Solutions at 614-871-4144 for expert furnace repair in Grove City.

Our specialists will quickly spot and take care of the breakdown, even if you don’t own a Lennox heater. We can service whichever kinds or configuration—and get the heat restored to your residence quickly.


What Does the Flickering Light on My Furnace Mean?

Your heating system depends on lights to flash code when it requires repairs. It also engages this system to relay it’s operating properly.

Correct function consists of:

  • Concurrent slow flash—furnace running like it should.
  • Simultaneous fast flash—heating system is beginning to call for heat.

If you realize that a single light going on and off slowly and the other blinking fast, your heater could be having a low flame signal. This can happen even when your heater is heating correctly. It indicates the flame sensing rod might have build-up or in the wrong area on the burner. Call us at 614-871-4144 for support.

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

Heater Will Not Kick On

Here are a few of the light arrangements you might see when your heating system refuses to or stay on. Most of these errors must be repaired by an expert, for instance from Air Quality Solutions.

  1. The duo of LED lights are off. This indicates your HVAC system might not be receiving power. Look at the breaker box to confirm the furnace fuse hasn’t triggered. Attempt to reset the fuse if it has moved into the “off” spot. If it rapidly flips after you reset it, don’t try to reset it again and call us at 614-871-4144.
  2. An individual light is unchanging and the other is flashing slowly. This signifies the flame rollout switch is possibly malfunctioning. The component is an important safety guard that aids in preventing fires and carbon monoxide. You shouldn’t attempt to repair this issue yourself.
  3. A single light is blinking fast and the other is blinking slowly. This likely indicates power polarity has been inverted. Your heater may have a wiring issue that needs specialized support from Air Quality Solutions.
  4. Both lights are flashing slowly. This means your furnace’s blower motor possibly isn’t operating. This part moves warm air from the heating system into your space. We can help in determining what’s causing a problem with this piece.
  5. A single light is flashing slowly and the other is flickering rapidly. This indicates your heater might have low voltage or a short circuit. Reach out to our specialists at 614-871-4144 for assistance.
  6. One light is blinking on, on and off while the other flashes on, off, on. This indicates there might be a malfunction with your heater’s motherboard or wiring. Air Quality Solutions can locate the error and handle it.
  7. Both lights display every other slow flickers. This means your HVAC system may have a flame failure. There may be trouble with its gas supply, gas valve or ignitor control. Contact us at 614-871-4144 for support.
  8. An individual light blinks slowly while the other is solid. This often signifies your heating system’s limit switch is not working. The switch stops your HVAC equipment from overheating. Reach out to the pros at Air Quality Solutions for assistance.

Heater Blower Runs But No Warm Air

Here’s what may be wrong when you hear your heating equipment’s blower fan on, but you aren’t getting any heat.

  • The pair of lights are giving every other fast blinks. This signifies your furnace ignitor might not be in working order. This piece ignites gas in your heating system to produce warm air and should be serviced by a professional from Air Quality Solutions.

Trust Us for Skilled Furnace Repair

When you have to get your furnace repaired fast, depend on the technicians at Air Quality Solutions. Our techs will handle the problem right away and have your space feeling cozy again in no time. Reach out to us at 614-871-4144 or contact us online to request an appointment right away.

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