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

Its control panel has twin LED lights that can display a fault code. Based on the problem, your furnace may show continuous or flashing lights.

Although there are a few simple heating repairs you can do on your own, the majority of repairs are best taken care of by the professionals. When your heating system won’t kick on or put out warm air, call Air-Right Energy Design at 703-260-1148 for professional furnace repair in Manassas.

Our technicians will quickly determine and fix the breakdown, even if you don’t own a Lennox heater. We can fix whichever brands or models—and get the warmth reintroduced to your home quickly.

What Does the Blinking Light on My Heating System Mean?

Your heater uses lights to flash code when it requires repairs. It also engages these lights to let you know it’s heating properly.

Correct function includes:

  • Concurrent slow flash—heater heating correctly.
  • Simultaneous fast flash—heating system is beginning to call for heat.

If you see a lone light blinking slowly and the other going on and off fast, your furnace may be experiencing a low flame signal. This can take place even when your furnace is running like it should. It indicates the flame sensing rod might need to be cleaned or in the incorrect spot on the burner. Contact us at 703-260-1148 for assistance.

Here are some of the most routine errors for Lennox furnaces.

Furnace Won’t Start

Here are some of the light patterns you might observe when your heating system will not or keep heating. Most of these issues need to be fixed by a professional, for instance from Air-Right Energy Design.

  1. All LED lights are off. This means your heating system might not have electricity. Go to the breaker box to confirm the furnace fuse is not flipped. Try resetting the fuse if it is in the “off” position. If it rapidly turns off after you reset it, don’t touch the breaker and get in touch with us us at 703-260-1148.
  2. A single light is unchanging and the other is flashing slowly. This signifies the flame rollout switch is may be not working right. The part is a critical safety mechanism that helps in avoiding fires and carbon monoxide. You shouldn’t attempt to handle this issue on your own.
  3. One light is blinking rapidly and the other is flashing slowly. This typically means power polarity has been inverted. Your heater might have a wiring issue that calls for professional aid from Air-Right Energy Design.
  4. All lights are flashing slowly. This means your heating system’s blower motor possibly isn’t running. This part moves heated air from the heater into your house. We can assist in determining what’s wrong with this part.
  5. An individual light is flickering slowly and the other is blinking rapidly. This signifies your heating system might have insufficient voltage or a short circuit. Reach out to our specialists at 703-260-1148 for assistance.
  6. One light is flickering on, on, off while the other flashes on, off, on. This indicates there could be a malfunction with your heater’s control panel or wiring. Air-Right Energy Design can determine the issue and take care of it.
  7. The duo of lights are using alternate slow flickers. This means your HVAC system likely has a flame issue. There could be trouble with its gas supply, gas valve or ignitor control. Get in touch with us at 703-260-1148 for support.
  8. A single light flashes slowly while the other stays continuous. This often means your heater’s limit switch is malfunctioning. The switch keeps your HVAC equipment from getting too hot. Reach out to the experts at Air-Right Energy Design for assistance.

Heating System Blower Operates But No Warmth

Here’s what could be at fault when you notice your heater’s blower fan running, but you aren’t receiving any warmth.

  • Both lights display every other fast flashes. This means your furnace ignitor could not be in working order. This part kindles energy in your heating system to create warm air and should be fixed by a specialist from Air-Right Energy Design.

Depend on Us for Expert Furnace Repair

When you have to get your HVAC equipment fixed without delay, depend on the specialists at Air-Right Energy Design. Our pros will fix the error quickly and have your rooms feeling relaxing again in no time. Contact us at 703-260-1148 or contact us online to request an appointment right away.