Furnace troubleshooting

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

While your Lennox® HVAC equipment isn’t able to speak to you, it possesses a way to tell you about a furnace error.

Its control panel has two LED lights that can display a fault code. Based on the failure, your heating system might use continuous or flashing lights.

Though there are some elementary HVAC repairs you can finish on your own, the majority of repairs are best handled by the professionals. When your heater will not start or deliver heated air, reach out to Gopher Heating and Air Conditioning at 952-373-0377 for professional furnace repair in Savage.

Our technicians will speedily diagnose and repair the fault, even if you don’t have a Lennox heating system. We can fix all brands or configuration—and get the warmth returned to your residence quickly.


What Does the Flickering Light on My Furnace Mean?

Your furnace relies on lights to flash code when it needs to be repaired. It also works this system to let you know it’s working correctly.

Regular heating includes:

  • Simultaneous slow flash—heating system operating correctly.
  • Concurrent fast flash—furnace is starting to call for heat.

If you realize that a single light flashing slowly and the other flashing rapidly, your furnace might have a low flame signal. This can happen even when your heater is running correctly. It signifies the flame sensing rod may have build-up or in the incorrect area on the burner. Reach out to us at 952-373-0377 for help.

Here are a few other of the most common problems for Lennox HVAC systems.

Heating System Refuses to Turn On

Here are many of the light arrangements you could observe when your heat won’t turn on or keep operating. Most of these issues need to be handled by a technician, for instance from Gopher Heating and Air Conditioning.

  1. The pair of LED lights are extinguished. This means your heater might not be receiving power. Look at the breaker box to confirm the furnace fuse is not triggered. You should reset the fuse if it’s in the “off” area. If it promptly turns off after you reset it, leave the breaker alone and contact us at 952-373-0377.
  2. A single light is stable and the other is flickering slowly. This shows the flame rollout switch is possibly not working right. The switch is an important safety tool that assists in preventing fires and carbon monoxide. You shouldn’t try to handle this issue on your own.
  3. A single light is flickering fast and the other is flashing slowly. This often signifies power polarity has been reversed. Your heater could have a wiring error that needs specialized support from Gopher Heating and Air Conditioning.
  4. The pair of lights are flickering slowly. This means your furnace’s blower motor possibly isn’t working. This piece moves heated air from the heater into your rooms. We can help in pinpointing what’s wrong with this part.
  5. A single light is flashing slowly and the other is blinking rapidly. This signifies your heater may have low voltage or a short circuit. Reach out to our specialists at 952-373-0377 for assistance.
  6. One light is flickering on, on and off while the other flickers on, off, on. This signifies there may be a fault with your furnace’s motherboard or wiring. Gopher Heating and Air Conditioning can find the issue and take care of it.
  7. The pair of lights are using alternate slow flickers. This signifies your HVAC system possibly has a flame failure. There might be an issue with its gas supply, gas valve or ignitor control. Get in touch with us at 952-373-0377 for help.
  8. A single light flashes slowly while the other remains solid. This usually means your heating system’s limit switch is experiencing an error. The switch stops your furnace from becoming too warm. Contact the specialists at Gopher Heating and Air Conditioning for help.

Heater Blower Works But No Warm Air

Here’s what could be at fault when you notice your heater’s blower fan on, but you aren’t gaining any warm air.

  • Both lights are giving alternating quick flickers. This signifies your furnace ignitor might not be working. This part lights energy in your heating system to create heat and should be fixed by a specialist from Gopher Heating and Air Conditioning.

Trust Us for Skilled Furnace Repair

When you have to get your furnace fixed quickly, depend on the experts at Gopher Heating and Air Conditioning. Our techs will fix the fault quickly and have your house feeling cozy again soon. Reach out to us at 952-373-0377 or contact us online to schedule an appointment today.

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