Furnace troubleshooting

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

While your Lennox® HVAC equipment can’t talk to you, it does have a process to get your attention when there’s a furnace error.

Its control panel has two LED lights that can display a fault code. Based on the malfunction, your heater might display continuous or flashing lights.

Though there are various elementary heating repairs you can finish yourself, the majority of services are best left to experts. When your heating system won’t turn on or deliver heat, call Stephen Hurst Pack Heating and Cooling, Inc. at 740-474-5940 for skilled furnace repair in Circleville.

Our experts will speedily identify and take care of the issue, even if you don’t use a Lennox heater. We can service all kinds or models—and get the warmth reintroduced to your house fast.

REQUEST FURNACE REPAIR

What Does the Blinking Light on My Heating System Mean?

Your heater depends on lights to flash code when it requires repairs. It also uses this system to relay it’s working properly.

Correct function consists of:

  • Concurrent slow flash—heating system operating properly.
  • Both lights flash fast—heating system is initiating the call for heat.

If you see one light blinking slowly and the other flashing quickly, your furnace could have a low flame signal. This can take place even when your heater is operating correctly. It indicates the flame sensing rod might be dirty or in the incorrect location on the burner. Contact us at 740-474-5940 for help.

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

Heater Refuses to Kick On

Here are many of the light arrangements you might see when your heater will not or keep running. Most of these issues need to be repaired by a specialist, like one from Stephen Hurst Pack Heating and Cooling, Inc..

  1. Both LED lights are off. This signifies your HVAC system might not have power. Look at the breaker box to ensure the heater fuse hasn’t tripped. Try resetting the fuse if it is in the “off” area. If it rapidly trips after a subsequent reset, leave the breaker alone and get in touch with us us at 740-474-5940.
  2. A single light is unchanging and the other is flashing slowly. This implies the flame rollout switch is possibly malfunctioning. The switch is an important safety tool that assists in preventing fires and carbon monoxide. You shouldn’t attempt to handle this fault yourself.
  3. A single light is flickering rapidly and the other is blinking slowly. This likely means power polarity has been inverted. Your heating system might have a wiring issue that needs professional help from Stephen Hurst Pack Heating and Cooling, Inc..
  4. The duo of lights are blinking slowly. This signifies your heating system’s blower motor possibly isn’t running. This part moves heated air from the HVAC system into your rooms. We can assist in pinpointing what’s causing an issue with this piece.
  5. One light is flickering slowly and the other is flickering rapidly. This means your HVAC system could have low voltage or a short circuit. Call our professionals at 740-474-5940 for assistance.
  6. One light is blinking on, on and off while the other flickers on, off, on. This signifies there might be a malfunction with your heating system’s control panel or wiring. Stephen Hurst Pack Heating and Cooling, Inc. can find the issue and handle it.
  7. Both lights display alternate slow flashes. This means your heating system likely has a flame problem. There might be trouble with its gas supply, gas valve or ignitor control. Contact us at 740-474-5940 for help.
  8. An individual light flashes slowly while the other remains solid. This typically signifies your furnace’s limit switch is malfunctioning. The switch stops your HVAC equipment from becoming too warm. Call the professionals at Stephen Hurst Pack Heating and Cooling, Inc. for help.

Heater Blower Works But No Heat

Here’s what may be at fault when you hear your furnace’s blower fan on, but you aren’t gaining any heated air.

  • Both lights are showing alternate rapid flickers. This signifies your furnace ignitor might not be in working order. This component lights gas in your heater to make heat and should be fixed by a specialist from Stephen Hurst Pack Heating and Cooling, Inc..

Turn to Us for Expert Furnace Repair

When you need to get your heater in working order quickly, trust the specialists at Stephen Hurst Pack Heating and Cooling, Inc.. Our technicians will repair the fault right away and have your rooms feeling relaxing again in no time. Reach out to us at 740-474-5940 or contact us online to schedule an appointment now.

Back To Blog