While your Lennox® HVAC equipment isn’t able to chat with you, it has a process to communicate a furnace error.

Its control board has a set of LED lights that can display a fault code. Based on the issue, your heater may use steady or flashing lights.

Although there are a few elementary HVAC repairs you can do on your own, the majority of tasks are best handled by experts. When your heating system refuses to start or put out heated air, reach out to ACS Heating and Air Conditioning at 770-450-1539 for experienced furnace repair in Tucker.

Our technicians will swiftly detect and repair the malfunction, even if you don’t own a Lennox heating system. We can fix all brands or configuration—and get the heat reintroduced to your house quickly.

What Does the Flickering Light on My Furnace Mean?

Your heating system relies on lights to flash code when it is malfunctioning. It also engages this setup to tell you it’s working like it should.

Normal operation includes:

  • Simultaneous slow flash—heating system operating like it should.
  • Simultaneous fast flash—heater is beginning to call for heat.

If you realize that a single light going on and off slowly and the other blinking rapidly, your heater might be having a low flame signal. This can happen even when your heater is operating properly. It indicates the flame sensing rod might need to be cleaned or in the wrong location on the burner. Contact us at 770-450-1539 for support.

Here are some of the most routine errors for Lennox HVAC systems.

Heating System Will Not Turn On

Here are many of the light arrangements you might observe when your heater will not or keep running. The majority of these errors need to be taken care of by a specialist, like one from ACS Heating and Air Conditioning.

  1. The pair of LED lights are extinguished. This indicates your heating system might not be receiving power. Examine the breaker box to ensure the furnace fuse isn’t tripped. You should reset the fuse if it is in the “off” spot. If it promptly turns off after you reset it, don’t touch the breaker and call us at 770-450-1539.
  2. A single light is stable and the other is blinking slowly. This shows the flame rollout switch is possibly malfunctioning. The component is a critical safety tool that helps in stopping fires and carbon monoxide. You shouldn’t seek to repair this issue without professional help.
  3. An individual light is blinking rapidly and the other is flashing slowly. This likely indicates power polarity has been reversed. Your heater may have a wiring problem that calls for specialized help from ACS Heating and Air Conditioning.
  4. All lights are flickering slowly. This means your furnace’s blower motor likely isn’t operating. This part moves warm air from the furnace into your house. We can help in figuring out what’s causing an issue with this part.
  5. A single light is flickering slowly and the other is flashing rapidly. This means your heater could have not enough voltage or a short circuit. Call our experts at 770-450-1539 for help.
  6. One light is blinking on, on, off while the other flashes on, off, on. This means there could be an issue with your heater’s control board or wiring. ACS Heating and Air Conditioning can determine the issue and take care of it.
  7. The pair of lights are using every other slow flickers. This means your heater likely has a flame failure. There could be trouble with its gas supply, gas valve or ignitor control. Call us at 770-450-1539 for help.
  8. A single light flickers slowly while the other remains solid. This usually means your heater’s limit switch is not working. The switch stops your HVAC equipment from overheating. Get in touch with the professionals at ACS Heating and Air Conditioning for support.

Heater Blower Operates But No Warm Air

Here’s what could be broken when you notice your heating system’s blower fan on, but you aren’t gaining any warm air.

  • The pair of lights display alternate fast blinks. This means your furnace ignitor could not be in working order. This piece ignites fuel in your heater to produce heat and should be repaired by a specialist from ACS Heating and Air Conditioning.

Turn to Us for Skilled Furnace Repair

When you have to have your HVAC equipment in working order without delay, depend on the professionals at ACS Heating and Air Conditioning. Our techs will take care of the error without delay and have your house feeling cozy again in no time. Reach out to us at 770-450-1539 or contact us online to schedule an appointment right away.