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

Its control panel has twin LED lights that can share a fault code. Based on the failure, your heater might show solid or flashing lights.

While there are a few simple furnace adjustments you can take care of on your own, the majority of repairs are best taken care of by experts. When your heating system will not kick on or put out warmth, contact Air Alliance Team at 636-206-4584 for experienced furnace repair in Ballwin and St. Charles.

Our technicians will rapidly detect and repair the issue, even if you don’t use a Lennox heater. We can service any types or configuration—and get the heat returned to your home without delay.

What Does the Blinking Light on My Heater Mean?

Your furnace uses lights to flash code when it isn’t working right. It also uses these lights to relay it’s operating like it should.

Correct operation includes:

  • Concurrent slow flash—heater operating like it should.
  • Simultaneous fast flash—furnace is beginning to call for heat.

If you see a solitary light blinking slowly and the other flashing quickly, your furnace may have a low flame signal. This can take place even when your furnace is running correctly. It means the flame sensing rod could have buildup or in the wrong location on the burner. Reach out to us at 636-206-4584 for help.

Here are some of the most typical faults for Lennox heating systems.

Furnace Refuses to Kick On

Here are many of the light patterns you could notice when your heater will not or keep running. The bulk of these issues need to be handled by a technician, like one from Air Alliance Team.

  1. Both LED lights are off. This indicates your heater might not have power. Look at the breaker box to make sure the furnace fuse is not triggered. Try resetting the fuse if it’s in the “off” position. If it immediately turns off following a reset, don’t try to reset it again and contact us at 636-206-4584.
  2. A single light is unchanging and the other is flickering slowly. This shows the flame rollout switch is likely not working right. The component is an essential safety guard that aids in preventing fires and carbon monoxide. You shouldn’t try to handle this problem on your own.
  3. A single light is flashing rapidly and the other is blinking slowly. This often means power polarity has been reversed. Your heater could have a wiring issue that requires specialized assistance from Air Alliance Team.
  4. Both lights are flashing slowly. This means your furnace’s blower motor probably isn’t operating. This part moves warm air from the heater into your rooms. We can assist in pinpointing what’s causing an issue with this part.
  5. An individual light is blinking slowly and the other is flashing quickly. This means your heating system might have not enough voltage or a short circuit. Get in touch with our experts at 636-206-4584 for help.
  6. One light is flickering on, on, off while the other flickers on, off, on. This means there could be a fault with your HVAC system’s control board or wiring. Air Alliance Team can pinpoint the problem and fix it.
  7. Both lights show alternating slow flickers. This indicates your HVAC system may have a flame failure. There may be a problem with its gas supply, gas valve or ignitor control. Contact us at 636-206-4584 for help.
  8. A single light flickers slowly while the other is continuous. This typically indicates your HVAC equipment’s limit switch is not working. The switch prevents your HVAC system from becoming too warm. Call the specialists at Air Alliance Team for support.

Heating System Blower Works But No Heat

Here’s what may be broken when you notice your heating system’s blower fan on, but you aren’t gaining any warmth.

  • The duo of lights display alternate rapid blinks. This means your furnace ignitor may be broken. This component kindles gas in your furnace to create warmth and should be repaired by a specialist from Air Alliance Team.

Depend on Us for Skilled Furnace Repair

When you need to have your heater repaired without delay, trust the specialists at Air Alliance Team. Our pros will fix the issue quickly and have your rooms feeling comfortable again in a short time. Reach out to us at 636-206-4584 or contact us online to request an appointment right away.