Furnace troubleshooting

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

While your Lennox® furnace cannot chat with you, it possesses a method to tell you about a furnace error.

Its motherboard has two LED lights that can display a fault code. Subject to the failure, your heating system may display continuous or flashing lights.

Though there are some elementary HVAC adjustments you can do on your own, the majority of repairs are best taken care of by experts. When your furnace refuses to start or deliver warmth, get in touch with Redhawk Heating & Air Conditioning at 432-237-0168 for skilled furnace repair in Odessa.

Our experts will quickly determine and repair the breakdown, even if you don’t own a Lennox heating system. We can repair any brands or models—and get the comfort returned to your house quickly.


What Does the Flickering Light on My Heater Mean?

Your furnace uses lights to flash code when it requires repairs. It also engages these lights to let you know it’s heating correctly.

Regular function includes:

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

If you realize that a single light flashing slowly and the other blinking fast, your furnace may be having a low flame signal. This can happen even when your heating system is working properly. It means the flame sensing rod may be dirty or in the incorrect spot on the burner. Contact us at 432-237-0168 for support.

Here are several other of the most typical errors for Lennox heaters.

Heating System Refuses to Kick On

Here are some of the light arrangements you might observe when your furnace won’t turn on or keep operating. The majority of these errors must be handled by a professional, for instance from Redhawk Heating & Air Conditioning.

  1. The pair of LED lights aren’t lit. This signifies your furnace might not have power. Find the breaker box to make sure the furnace fuse isn’t triggered. Attempt to reset the fuse if it is in the “off” area. If it rapidly trips following a reset, don’t touch the breaker and get in touch with us us at 432-237-0168.
  2. An individual light is unchanging and the other is blinking slowly. This signifies the flame rollout switch is may be open. The switch is an important safety guard that assists in preventing fires and carbon monoxide. You shouldn’t try to take care of this fault on your own.
  3. One light is flashing fast and the other is flickering slowly. This typically means power polarity has been reversed. Your furnace may have a wiring error that calls for expert aid from Redhawk Heating & Air Conditioning.
  4. The pair of lights are blinking slowly. This means your heater’s blower motor probably isn’t working. This part sends hot air from the heating system into your house. We can aid in figuring out what’s causing a problem with this part.
  5. A single light is flashing slowly and the other is blinking fast. This signifies your heater might have low voltage or a short circuit. Call our technicians at 432-237-0168 for help.
  6. One light is flashing on, on and off while the other flickers on, off, on. This indicates there could be a malfunction with your heating system’s motherboard or wiring. Redhawk Heating & Air Conditioning can locate the issue and take care of it.
  7. Both lights are using every other slow flashes. This signifies your HVAC system possibly has a flame issue. There may be an issue with its gas supply, gas valve or ignitor control. Call us at 432-237-0168 for support.
  8. A single light flashes slowly while the other remains continuous. This often signifies your heating system’s limit switch is experiencing an error. The switch prevents your heating system from overheating. Get in touch with the pros at Redhawk Heating & Air Conditioning for assistance.

Heating System Blower Runs But No Warm Air

Here’s what may be at fault when you hear your heater’s blower fan working, but you aren’t getting any heat.

  • The duo of lights are showing alternating fast flashes. This means your furnace ignitor might be broken. This piece lights fuel in your furnace to create heat and should be repaired by an expert from Redhawk Heating & Air Conditioning.

Turn to Us for Skilled Furnace Repair

When you have to have your heating system in working order fast, turn to the technicians at Redhawk Heating & Air Conditioning. Our techs will fix the error without delay and have your house feeling comfortable again in a short time. Call us at 432-237-0168 or contact us online to get an appointment today.

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