While your Lennox® heater can’t chat with you, it possesses a method to get your attention when there’s a furnace error.

Its control board has a set of LED lights that can show a fault code. Based on the problem, your heating system might use steady or flashing lights.

Though there are a few simple furnace fixes you can do yourself, many fixes are best taken care of by the professionals. When your heating system will not start or deliver heat, reach out to Brandywine Heating & Air at 302-261-3596 for professional furnace repair in Wilmington.

Our specialists will swiftly detect and handle the breakdown, even if you don’t use a Lennox heater. We can service all types or models—and get the heat reintroduced to your house without delay.

What Does the Flashing Light on My Heating System Mean?

Your heating system relies on lights to flash code when it requires repairs. It also works this setup to relay it’s working correctly.

Regular operation involves:

  • Simultaneous slow flash—heating system running properly.
  • Both lights flash fast—heater is initiating the call for heat.

If you realize that a single light blinking slowly and the other blinking fast, your furnace could be having a low flame signal. This can occur even when your furnace is running like it should. It signifies the flame sensing rod may need to be cleaned or in the incorrect location on the burner. Reach out to us at 302-261-3596 for help.

Here are a few other of the most typical problems for Lennox furnaces.

Furnace Won’t Turn On

Here are some of the light arrangements you may notice when your heater will not or keep operating. The majority of these errors have to be handled by a professional, for instance from Brandywine Heating & Air.

  1. The duo of LED lights are extinguished. This signifies your HVAC system might not have power. Find the breaker box to ensure the furnace fuse has not triggered. Try resetting the fuse if it’s in the “off” position. If it rapidly turns off after you reset it, don’t touch the breaker and contact us at 302-261-3596.
  2. One light is stable and the other is flickering slowly. This signifies the flame rollout switch is likely open. The switch is a critical safety tool that aids in stopping fires and carbon monoxide. You shouldn’t try to handle this problem on your own.
  3. An individual light is flashing rapidly and the other is flashing slowly. This likely means power polarity has been inverted. Your furnace might have a wiring issue that needs professional help from Brandywine Heating & Air.
  4. The pair of lights are flashing slowly. This indicates your heater’s blower motor possibly isn’t running. This piece circulates heated air from the furnace into your home. We can help in pinpointing what’s causing a problem with this component.
  5. One light is flickering slowly and the other is flickering fast. This signifies your heating system could have not enough voltage or a short circuit. Reach out to our specialists at 302-261-3596 for assistance.
  6. One light is flickering on, on, off while the other blinks on, off, on. This signifies there may be a fault with your heater’s control panel or wiring. Brandywine Heating & Air can find the problem and fix it.
  7. The pair of lights show alternating slow blinks. This signifies your HVAC system may have a flame issue. There may be a problem with its gas supply, gas valve or ignitor control. Reach out to us at 302-261-3596 for support.
  8. A single light flickers slowly while the other stays continuous. This typically signifies your HVAC system’s limit switch is malfunctioning. The switch keeps your heater from overheating. Reach out to the specialists at Brandywine Heating & Air for help.

Heating System Blower Works But No Warmth

Here’s what might be broken when you notice your heating equipment’s blower fan running, but you aren’t getting any warmth.

  • The duo of lights are showing alternate rapid flickers. This indicates your furnace ignitor might not be in working order. This component lights gas in your heater to make heat and should be serviced by a specialist from Brandywine Heating & Air.

Trust Us for Expert Furnace Repair

When you have to get your HVAC equipment fixed fast, trust the professionals at Brandywine Heating & Air. Our pros will take care of the issue right away and have your rooms feeling comfortable again in a short time. Contact us at 302-261-3596 or contact us online to schedule an appointment right away.