While your Lennox® heater isn’t able to talk to you, it does have a way to communicate a furnace error.

Its control board has double LED lights that can share a fault code. Based on the issue, your heating system could use continuous or flashing lights.

Although there are a few simple heating repairs you can complete on your own, many fixes are best handled by HVAC technicians. When your furnace will not kick on or provide heat, reach out to ACS Heating and Air Conditioning at 770-450-1539 for experienced furnace repair in Tucker.

Our technicians will speedily discover and take care of the issue, even if you don’t use a Lennox heater. We can repair any kinds or models—and get the comfort returned to your residence quickly.

What Does the Blinking Light on My Heating System Mean?

Your heater depends on lights to flash code when it requires repairs. It also engages these lights to tell you it’s working correctly.

Correct function consists of:

  • Simultaneous slow flash—heater working properly.
  • Concurrent fast flash—furnace is initiating the call for heat.

If you realize that a single light flashing slowly and the other flashing fast, your furnace may be experiencing a low flame signal. This can take place even when your heating system is running correctly. It means the flame sensing rod may have buildup or in the incorrect location on the burner. Contact us at 770-450-1539 for assistance.

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

Heater Refuses to Start

Here are many of the light sequences you could see when your heat refuses to or keep running. The bulk of these errors must be handled by a technician, such as one from ACS Heating and Air Conditioning.

  1. Both LED lights are extinguished. This indicates your heating system might not have power. Look at the breaker box to make sure the heating system fuse has not triggered. Attempt to reset the fuse if it is in the “off” area. If it rapidly flips after you reset it, don’t touch the breaker and get in touch with us us at 770-450-1539.
  2. One light is unchanging and the other is flickering slowly. This implies the flame rollout switch is may be open. The part is a critical safety device that helps in stopping fires and carbon monoxide. You shouldn’t seek to repair this problem without professional help.
  3. A single light is flashing fast and the other is blinking slowly. This likely means power polarity has been reversed. Your furnace may have a wiring fault that requires expert aid from ACS Heating and Air Conditioning.
  4. The pair of lights are flashing slowly. This means your heating system’s blower motor probably isn’t working. This component circulates hot air from the heater into your space. We can assist in determining what’s causing a problem with this piece.
  5. One light is blinking slowly and the other is flickering rapidly. This signifies your heating system might have low voltage or a short circuit. Reach out to our specialists at 770-450-1539 for support.
  6. One light is flickering on, on, off while the other flashes on, off, on. This indicates there may be a fault with your heating system’s motherboard or wiring. ACS Heating and Air Conditioning can locate the issue and handle it.
  7. Both lights show alternate slow flickers. This indicates your HVAC equipment likely has a flame issue. There might be a problem with its gas supply, gas valve or ignitor control. Call us at 770-450-1539 for help.
  8. An individual light blinks slowly while the other remains steady. This often means your HVAC equipment’s limit switch is not working. The switch prevents your heating system from overheating. Get in touch with the pros at ACS Heating and Air Conditioning for help.

Heater Blower Runs But No Heat

Here’s what may be at fault when you observe your heating system’s blower fan running, but you aren’t receiving any warm air.

  • Both lights are giving alternate rapid flickers. This signifies your furnace ignitor could not be working. This component ignites energy in your heating system to make warm air and should be serviced by a specialist from ACS Heating and Air Conditioning.

Depend on Us for Expert Furnace Repair

When you need to get your heating system repaired quickly, depend on the professionals at ACS Heating and Air Conditioning. Our pros will repair the error without delay and have your residence feeling cozy again soon. Contact us at 770-450-1539 or contact us online to get an appointment right away.