While your Lennox® heater can’t chat with you, it has a way to tell you about a furnace error.

Its motherboard has double LED lights that can share a fault code. Subject to the problem, your heater could use solid or flashing lights.

Although there are certain simple heating repairs you can finish without an expert, many fixes are best taken care of by the professionals. When your furnace refuses to turn on or put out heated air, contact Fire & Ice HVAC at 703-595-4157 for experienced furnace repair in Manassas.

Our specialists will speedily identify and repair the problem, even if you don’t use a Lennox heater. We can fix whichever brands or configuration—and get the heat returned to your home fast.

What Does the Flickering Light on My Heater Mean?

Your furnace relies on lights to flash code when it isn’t working right. It also uses this setup to let you know it’s working properly.

Correct heating involves:

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

If you realize that a solitary light blinking slowly and the other going on and off fast, your furnace might be having a low flame signal. This can happen even when your furnace is heating like it should. It indicates the flame sensing rod might be dirty or in the incorrect spot on the burner. Contact us at 703-595-4157 for assistance.

Here are several other of the most typical issues for Lennox heaters.

Furnace Won’t Turn On

Here are many of the light arrangements you could see when your heat won’t turn on or keep operating. The bulk of these issues need to be handled by an expert, like one from Fire & Ice HVAC.

  1. All LED lights aren’t lit. This means your HVAC system might not have electricity. Look at the breaker box to ensure the heating system fuse has not tripped. Attempt to reset the fuse if it’s in the “off” position. If it rapidly turns off following a reset, don’t try to reset it again and contact us at 703-595-4157.
  2. A single light is unchanging and the other is flashing slowly. This shows the flame rollout switch is possibly malfunctioning. The switch is an essential safety tool that helps in avoiding fires and carbon monoxide. You shouldn’t attempt to handle this fault without professional help.
  3. One light is blinking quickly and the other is flashing slowly. This often means power polarity has been reversed. Your heater might have a wiring fault that requires specialized assistance from Fire & Ice HVAC.
  4. The pair of lights are flickering slowly. This indicates your heating system’s blower motor probably isn’t running. This part circulates hot air from the heater into your home. We can assist in determining what’s causing an issue with this piece.
  5. An individual light is flashing slowly and the other is blinking rapidly. This signifies your heater may have insufficient voltage or a short circuit. Get in touch with our technicians at 703-595-4157 for assistance.
  6. One light is blinking on, on, off while the other flashes on, off, on. This means there might be an issue with your HVAC system’s motherboard or wiring. Fire & Ice HVAC can determine the fault and handle it.
  7. The pair of lights show alternating slow blinks. This means your heating system possibly has a flame failure. There might be trouble with its gas supply, gas valve or ignitor control. Reach out to us at 703-595-4157 for support.
  8. An individual light blinks slowly while the other remains continuous. This typically signifies your heater’s limit switch is malfunctioning. The switch stops your heating system from getting too hot. Get in touch with the experts at Fire & Ice HVAC for support.

Heater Blower Works But No Warmth

Here’s what may be at fault when you notice your heater’s blower fan running, but you aren’t gaining any heated air.

  • Both lights display every other rapid flashes. This indicates your furnace ignitor could not be in working order. This component lights fuel in your HVAC equipment to produce warm air and should be serviced by an expert from Fire & Ice HVAC.

Turn to Us for Professional Furnace Repair

When you need to have your heater fixed fast, turn to the specialists at Fire & Ice HVAC. Our techs will take care of the error without delay and have your space feeling comfortable again soon. Reach out to us at 703-595-4157 or contact us online to get an appointment now.