Furnace troubleshooting

Most Frequent Lennox® Furnace Error Codes (and What They Mean)

While your Lennox® heating system cannot speak to you, it possesses a procedure to communicate a furnace error.

Its control board has a set of LED lights that can display a fault code. Based on the failure, your heater might show continuous or flashing lights.

Though there are certain basic heating adjustments you can complete on your own, the majority of services are best handled by experts. When your heating system will not kick on or give warm air, call Bain Heating & Air Conditioning, Inc at 256-270-1196 for experienced furnace repair in Heflin.

Our specialists will rapidly diagnose and repair the malfunction, even if you don’t own a Lennox heater. We can service all types or models—and get the warmth returned to your home quickly.


What Does the Blinking Light on My Heater Mean?

Your heater relies on lights to flash code when it is malfunctioning. It also uses this setup to tell you it’s running properly.

Regular heating involves:

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

If you notice one light blinking slowly and the other flashing quickly, your furnace may have a low flame signal. This can happen even when your heater is operating like it should. It means the flame sensing rod could have build-up or in the incorrect location on the burner. Contact us at 256-270-1196 for help.

Here are a few other of the most typical issues for Lennox heating systems.

Heater Won’t Start

Here are many of the light arrangements you might notice when your heating system won’t turn on or keep operating. The bulk of these issues have to be fixed by a professional, such as one from Bain Heating & Air Conditioning, Inc.

  1. The duo of LED lights aren’t lit. This signifies your heater might not be receiving power. Go to the breaker box to ensure the furnace fuse isn’t flipped. You should reset the fuse if it has moved into the “off” area. If it promptly turns off after a subsequent reset, leave the breaker alone and contact us at 256-270-1196.
  2. One light is unchanging and the other is flickering slowly. This signifies the flame rollout switch is may be open. The component is a critical safety mechanism that assists in avoiding fires and carbon monoxide. You shouldn’t try to take care of this fault yourself.
  3. An individual light is blinking quickly and the other is flashing slowly. This usually means power polarity has been reversed. Your heating system might have a wiring problem that calls for professional aid from Bain Heating & Air Conditioning, Inc.
  4. All lights are blinking slowly. This signifies your heating system’s blower motor likely isn’t working. This component moves heated air from the HVAC system into your residence. We can help in pinpointing what’s causing an issue with this piece.
  5. One light is flickering slowly and the other is flickering fast. This means your HVAC system might have not enough voltage or a short circuit. Reach out to our specialists at 256-270-1196 for support.
  6. One light is blinking on, on and off while the other blinks on, off, on. This signifies there might be a fault with your furnace’s control panel or wiring. Bain Heating & Air Conditioning, Inc can determine the problem and handle it.
  7. Both lights show alternating slow flashes. This indicates your heating system possibly has a flame issue. There may be trouble with its gas supply, gas valve or ignitor control. Contact us at 256-270-1196 for help.
  8. A single light flashes slowly while the other stays steady. This often means your heating system’s limit switch is not working. The switch keeps your heater from getting too hot. Get in touch with the experts at Bain Heating & Air Conditioning, Inc for support.

Heating System Blower Works But No Warm Air

Here’s what could be broken when you observe your heating system’s blower fan running, but you aren’t gaining any heat.

  • The pair of lights are showing every other fast blinks. This signifies your furnace ignitor might not be in working order. This piece kindles energy in your furnace to create heat and should be serviced by a professional from Bain Heating & Air Conditioning, Inc.

Depend on Us for Expert Furnace Repair

When you have to have your HVAC equipment fixed quickly, trust the specialists at Bain Heating & Air Conditioning, Inc. Our pros will repair the issue without delay and have your space feeling relaxing again in no time. Get in touch with us at 256-270-1196 or contact us online to get an appointment now.

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