While your Lennox® heater cannot speak to you, it does have a way to get your attention when there’s a furnace error.

Its control board has two LED lights that can display a fault code. Depending on the issue, your heater may use continuous or flashing lights.

Though there are a few elementary furnace fixes you can complete without an expert, the majority of services are best left to experts. When your heating system won’t start or give warmth, reach out to Mayeuxs AC & Heating at (985) 764-2426 for experienced furnace repair in Norco and surrounding parishes.

Our technicians will speedily determine and handle the problem, even if you don’t own a Lennox heating system. We can service all kinds or makes—and get the comfort returned to your house without delay.

What Does the Blinking Light on My Heater Mean?

Your furnace depends on lights to flash code when it isn’t working right. It also works this system to tell you it’s operating like it should.

Normal function involves:

  • Concurrent slow flash—heater running correctly.
  • Concurrent fast flash—furnace is initiating the call for heat.

If you realize that a solitary light going on and off slowly and the other blinking fast, your heater might have a low flame signal. This can occur even when your heater is working correctly. It signifies the flame sensing rod may be dirty or in the incorrect area on the burner. Reach out to us at (985) 764-2426 for assistance.

Here are a few other of the most routine issues for Lennox furnaces.

Heater Refuses to Kick On

Here are a few of the light sequences you might notice when your heat refuses to or keep operating. The majority of these problems need to be fixed by a professional, such as one from Mayeuxs AC & Heating.

  1. Both LED lights aren’t lit. This signifies your heating system might not have power. Find the breaker box to confirm the furnace fuse isn’t tripped. You should reset the fuse if it is in the “off” position. If it promptly turns off following a reset, don’t try to reset it again and call us at (985) 764-2426.
  2. One light is continuous and the other is blinking slowly. This signifies the flame rollout switch is may be malfunctioning. The component is a critical safety mechanism that assists in stopping fires and carbon monoxide. You shouldn’t try to fix this malfunction on your own.
  3. A single light is blinking quickly and the other is flashing slowly. This likely signifies power polarity has been inverted. Your heater might have a wiring fault that requires expert help from Mayeuxs AC & Heating.
  4. The duo of lights are flickering slowly. This indicates your heating system’s blower motor likely isn’t running. This piece circulates warm air from the heating system into your residence. We can help in pinpointing what’s causing a problem with this piece.
  5. A single light is flickering slowly and the other is flickering rapidly. This signifies your heating system could have insufficient voltage or a short circuit. Get in touch with our technicians at (985) 764-2426 for help.
  6. One light is flashing on, on, off while the other flashes on, off, on. This indicates there could be a malfunction with your HVAC system’s motherboard or wiring. Mayeuxs AC & Heating can pinpoint the fault and take care of it.
  7. The pair of lights are using alternating slow blinks. This signifies your HVAC system likely has a flame failure. There may be an issue with its gas supply, gas valve or ignitor control. Call us at (985) 764-2426 for support.
  8. A single light flickers slowly while the other remains steady. This often signifies your heater’s limit switch is malfunctioning. The switch keeps your HVAC system from overheating. Reach out to the experts at Mayeuxs AC & Heating for support.

Heater Blower Operates But No Warm Air

Here’s what may be wrong when you notice your heating system’s blower fan on, but you aren’t receiving any warm air.

  • Both lights are giving alternate rapid blinks. This means your furnace ignitor might not be in working order. This part kindles energy in your heater to create warmth and should be repaired by a specialist from Mayeuxs AC & Heating.

Trust Us for Expert Furnace Repair

When you need to get your heater in working order without delay, turn to the experts at Mayeuxs AC & Heating. Our technicians will handle the fault without delay and have your rooms feeling comfortable again in no time. Reach out to us at (985) 764-2426 or contact us online to get an appointment today.