Furnace troubleshooting

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

While your Lennox® furnace cannot chat with you, it possesses a procedure to communicate a furnace error.

Its control board has a set of LED lights that can share a fault code. Subject to the failure, your heating system could show continuous or flashing lights.

Though there are some elementary heating fixes you can complete yourself, the majority of services are best taken care of by HVAC technicians. When your furnace will not kick on or give heat, reach out to Wolfe & Sons Heating and Cooling at 614-451-0846 for skilled furnace repair in Columbus.

Our specialists will speedily determine and fix the failure, even if you don’t have a Lennox heating system. We can fix any brands or models—and get the heat returned to your home quickly.


What Does the Blinking Light on My Furnace Mean?

Your heating system depends on lights to flash code when it requires repairs. It also uses this system to relay it’s running like it should.

Correct operation involves:

  • Both lights flash slowly—furnace working correctly.
  • Simultaneous fast flash—furnace is beginning to call for heat.

If you see a lone light going on and off slowly and the other flashing rapidly, your heater might have a low flame signal. This can occur even when your heater is running properly. It indicates the flame sensing rod could need to be cleaned or in the wrong area on the burner. Call us at 614-451-0846 for support.

Here are a few other of the most routine errors for Lennox HVAC systems.

Furnace Won’t Start

Here are many of the light sequences you might see when your heat refuses to or keep heating. The majority of these issues have to be repaired by an expert, for instance from Wolfe & Sons Heating and Cooling.

  1. The pair of LED lights aren’t lit. This signifies your furnace might not have electricity. Check the breaker box to ensure the heater fuse hasn’t tripped. Attempt to reset the fuse if it has moved into the “off” spot. If it immediately turns off after you reset it, don’t touch the breaker and get in touch with us us at 614-451-0846.
  2. One light is unchanging and the other is blinking slowly. This implies the flame rollout switch is probably malfunctioning. The switch is a critical safety device that helps in avoiding fires and carbon monoxide. You shouldn’t seek to repair this issue on your own.
  3. An individual light is blinking rapidly and the other is flickering slowly. This usually signifies power polarity has been inverted. Your heater could have a wiring problem that calls for professional assistance from Wolfe & Sons Heating and Cooling.
  4. All lights are flickering slowly. This indicates your furnace’s blower motor possibly isn’t running. This piece moves warm air from the heating system into your space. We can assist in determining what’s causing a problem with this piece.
  5. One light is blinking slowly and the other is blinking rapidly. This means your HVAC system may have low voltage or a short circuit. Reach out to our professionals at 614-451-0846 for help.
  6. One light is flashing on, on and off while the other blinks on, off, on. This signifies there could be a malfunction with your heating system’s motherboard or wiring. Wolfe & Sons Heating and Cooling can locate the issue and handle it.
  7. The duo of lights show every other slow flashes. This indicates your heating system possibly has a flame problem. There might be a problem with its gas supply, gas valve or ignitor control. Reach out to us at 614-451-0846 for support.
  8. An individual light blinks slowly while the other is steady. This often signifies your heater’s limit switch is malfunctioning. The switch prevents your HVAC equipment from getting too hot. Get in touch with the pros at Wolfe & Sons Heating and Cooling for support.

Heating System Blower Operates But No Warmth

Here’s what might be broken when you notice your furnace’s blower fan working, but you aren’t gaining any heat.

  • The pair of lights display every other fast flickers. This indicates your furnace ignitor could be broken. This component kindles gas in your heater to make heat and should be repaired by a specialist from Wolfe & Sons Heating and Cooling.

Turn to Us for Expert Furnace Repair

When you need to have your furnace in working order fast, turn to the professionals at Wolfe & Sons Heating and Cooling. Our techs will handle the error promptly and have your space feeling relaxing again in a short time. Reach out to us at 614-451-0846 or contact us online to get an appointment now.

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