While your Lennox® heating system isn’t able to chat with 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 malfunction, your heater may use solid or flashing lights.

Although there are a few simple HVAC repairs you can take care of on your own, many services are best handled by experts. When your heater refuses to turn on or deliver heated air, reach out to Bell Mechanical Services at 888-863-0560 for expert furnace repair in McKinney and Frisco.

Our technicians will rapidly discover and fix the malfunction, even if you don’t own a Lennox heater. We can repair whichever types or configuration—and get the comfort returned to your residence quickly.

What Does the Flashing Light on My Heating System Mean?

Your heater depends on lights to flash code when it requires repairs. It also uses this system to let you know it’s operating properly.

Normal function includes:

  • Simultaneous slow flash—heating system working like it should.
  • Concurrent fast flash—heating system is initiating the call for heat.

If you realize that a single light blinking slowly and the other blinking rapidly, your furnace may be experiencing a low flame signal. This can occur even when your furnace is operating correctly. It means the flame sensing rod might need to be cleaned or in the bad spot on the burner. Call us at 888-863-0560 for assistance.

Here are some of the most routine errors for Lennox heating systems.

Heating System Won’t Turn On

Here are some of the light sequences you could notice when your heater won’t turn on or keep operating. The majority of these errors need to be repaired by a specialist, like one from Bell Mechanical Services.

  1. The pair of LED lights are extinguished. This means your heater might not have electricity. Examine the breaker box to make sure the heating system fuse is not triggered. Attempt to reset the fuse if it is in the “off” area. If it rapidly trips after a subsequent reset, don’t touch the breaker and get in touch with us us at 888-863-0560.
  2. A single light is continuous and the other is blinking slowly. This signifies the flame rollout switch is may be not working right. The component is an essential safety device that aids in stopping fires and carbon monoxide. You shouldn’t try to repair this problem on your own.
  3. An individual light is flickering rapidly and the other is blinking slowly. This often signifies power polarity has been inverted. Your heating system could have a wiring fault that calls for specialized support from Bell Mechanical Services.
  4. Both lights are flickering slowly. This means your heater’s blower motor probably isn’t operating. This component distributes heated air from the heating system into your space. We can help in determining what’s wrong with this part.
  5. One light is flickering slowly and the other is blinking rapidly. This signifies your HVAC system might have not enough voltage or a short circuit. Get in touch with our technicians at 888-863-0560 for help.
  6. One light is flickering on, on, off while the other flickers on, off, on. This means there might be trouble with your HVAC system’s control board or wiring. Bell Mechanical Services can find the error and handle it.
  7. The duo of lights show alternate slow flashes. This indicates your heater possibly has a flame failure. There may be an issue with its gas supply, gas valve or ignitor control. Reach out to us at 888-863-0560 for support.
  8. An individual light flickers slowly while the other is continuous. This often signifies your heating system’s limit switch is experiencing an error. The switch keeps your heating system from becoming too warm. Reach out to the experts at Bell Mechanical Services for assistance.

Heater Blower Operates But No Heat

Here’s what might be wrong when you hear your heating system’s blower fan on, but you aren’t getting any warm air.

  • The pair of lights display alternate rapid flashes. This signifies your furnace ignitor might not be working. This piece kindles fuel in your heating system to make warm air and should be fixed by a specialist from Bell Mechanical Services.

Trust Us for Skilled Furnace Repair

When you need to get your HVAC equipment fixed without delay, turn to the specialists at Bell Mechanical Services. Our technicians will handle the issue right away and have your house feeling comfortable again in no time. Contact us at 888-863-0560 or contact us online to request an appointment right away.