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

Its control board has two LED lights that can share a fault code. Subject to the issue, your heating system might show continuous or flashing lights.

While there are some basic furnace fixes you can finish yourself, many tasks are best handled by the professionals. When your heater refuses to turn on or provide warmth, reach out to Airmax Long Island at 631-737-5566 for expert furnace repair in Long Island.

Our experts will rapidly identify and handle the breakdown, even if you don’t use a Lennox heating system. We can service all brands or models—and get the comfort returned to your residence quickly.

What Does the Blinking Light on My Heating System Mean?

Your heater uses lights to flash code when it is malfunctioning. It also works these lights to relay it’s heating properly.

Regular operation includes:

  • Concurrent slow flash—heating system heating properly.
  • Simultaneous fast flash—heating system is starting to call for heat.

If you realize that a single light blinking slowly and the other going on and off quickly, your heating system might be experiencing a low flame signal. This can happen even when your heating system is working correctly. It signifies the flame sensing rod could have buildup or in the wrong spot on the burner. Call us at 631-737-5566 for support.

Here are several other of the most routine faults for Lennox HVAC systems.

Furnace Won’t Turn On

Here are some of the light sequences you might notice when your furnace will not or keep operating. The majority of these issues must be fixed by a professional, such as one from Airmax Long Island.

  1. The pair of LED lights are extinguished. This means your heating system might not be receiving power. Go to the breaker box to ensure the heating system fuse is not tripped. Try resetting the fuse if it’s in the “off” area. If it promptly flips after you reset it, don’t touch the breaker and get in touch with us us at 631-737-5566.
  2. A single light is unchanging and the other is blinking slowly. This shows the flame rollout switch is possibly malfunctioning. The part is an essential safety device that aids in avoiding fires and carbon monoxide. You shouldn’t attempt to fix this malfunction yourself.
  3. An individual light is flashing fast and the other is blinking slowly. This likely signifies power polarity has been reversed. Your heater could have a wiring fault that needs specialized help from Airmax Long Island.
  4. The pair of lights are flashing slowly. This means your furnace’s blower motor possibly isn’t running. This component moves heated air from the HVAC system into your space. We can aid in determining what’s wrong with this piece.
  5. A single light is blinking slowly and the other is flickering quickly. This means your HVAC system might have not enough voltage or a short circuit. Get in touch with our specialists at 631-737-5566 for support.
  6. One light is flickering on, on, off while the other flashes on, off, on. This signifies there may be an issue with your heating system’s motherboard or wiring. Airmax Long Island can locate the problem and handle it.
  7. The pair of lights are using alternate slow flashes. This signifies your heating system likely has a flame issue. There might be a problem with its gas supply, gas valve or ignitor control. Contact us at 631-737-5566 for assistance.
  8. An individual light blinks slowly while the other stays steady. This typically means your heater’s limit switch is not working. The switch keeps your heater from getting too hot. Call the specialists at Airmax Long Island for assistance.

Heating System Blower Operates But No Warm Air

Here’s what could be wrong when you hear your heating system’s blower fan running, but you aren’t gaining any warm air.

  • The pair of lights display every other quick flickers. This indicates your furnace ignitor could not be working. This component ignites fuel in your furnace to create heat and should be fixed by a specialist from Airmax Long Island.

Trust Us for Expert Furnace Repair

When you have to have your heater in working order quickly, depend on the specialists at Airmax Long Island. Our techs will handle the fault right away and have your space feeling relaxing again in no time. Reach out to us at 631-737-5566 or contact us online to get an appointment now.