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

12/6/2019

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While your Lennox® HVAC equipment cannot chat with you, it possesses a method to get your attention when there’s a furnace error.

Its control panel has double LED lights that can share a fault code. Based on the malfunction, your furnace could show continuous or flashing lights.

Although there are various simple furnace fixes you can do without an expert, many repairs are best left to experts. When your furnace refuses to turn on or provide warm air, contact AC Sales at (337) 234-2345 for skilled furnace repair in Lafayette.

Our technicians will swiftly discover and handle the breakdown, even if you don’t have a Lennox heater. We can repair any brands or makes—and get the warmth returned to your residence quickly.

What Does the Blinking Light on My Heater Mean?

Your heater depends on lights to flash code when it requires repairs. It also engages this system to relay it’s working properly.

Correct heating includes:

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

If you realize that a solitary light going on and off slowly and the other flashing rapidly, your heater may be experiencing a low flame signal. This can occur even when your heater is working correctly. It indicates the flame sensing rod may be dirty or in the bad spot on the burner. Contact us at (337) 234-2345 for assistance.

Here are some of the most typical faults for Lennox heating systems.

Heating System Will Not Kick On

Here are many of the light arrangements you might notice when your heat won’t turn on or keep heating. Most of these errors must be repaired by a specialist, such as one from AC Sales.

1. The pair of LED lights aren’t lit. This signifies your heater might not have power. Go to the breaker box to confirm the heater fuse isn’t triggered. Try resetting the fuse if it’s in the “off” area. If it instantly turns off after you reset it, don’t try to reset it again and get in touch with us us at (337) 234-2345.
2. One light is continuous and the other is flickering slowly. This implies the flame rollout switch is possibly open. The part is a critical safety mechanism that assists in avoiding fires and carbon monoxide. You shouldn’t try to handle this problem on your own.
3. An individual light is flickering rapidly and the other is flickering slowly. This typically means power polarity has been inverted. Your furnace may have a wiring issue that requires expert support from AC Sales.
4. Both lights are flickering slowly. This signifies your heater’s blower motor possibly isn’t working. This piece sends heated air from the HVAC system into your home. We can assist in figuring out what’s causing an issue with this part.
5. One light is flashing slowly and the other is flickering quickly. This means your HVAC system could have not enough voltage or a short circuit. Get in touch with our experts at (337) 234-2345 for support.
6. One light is flashing on, on, off while the other flashes on, off, on. This means there might be an issue with your heating system’s motherboard or wiring. AC Sales can pinpoint the error and fix it.
7. The duo of lights display alternate slow flickers. This means your heater possibly has a flame issue. There might be trouble with its gas supply, gas valve or ignitor control. Reach out to us at (337) 234-2345 for support.
8. An individual light flickers slowly while the other stays steady. This often indicates your heating system’s limit switch is experiencing an error. The switch keeps your HVAC system from getting too hot. Call the pros at AC Sales for support.

Furnace Blower Works But No Warm Air

Here’s what might be broken when you observe your heating system’s blower fan on, but you aren’t gaining any heated air.

• Both lights display alternate fast flashes. This means your furnace ignitor could not be in working order. This component lights fuel in your HVAC equipment to produce warmth and should be repaired by an expert from AC Sales.

Trust Us for Professional Furnace Repair

When you have to get your heater fixed quickly, trust the technicians at AC Sales. Our technicians will repair the error right away and have your rooms feeling cozy again soon. Contact us at (337) 234-2345 or contact us online to schedule an appointment today.

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