While your Lennox® furnace isn’t able to speak to you, it does have a method to get your attention when there’s a furnace error.

Its motherboard has twin LED lights that can share a fault code. Based on the fault, your furnace may show solid or flashing lights.

Though there are various simple HVAC repairs you can complete on your own, most tasks are best handled by experts. When your furnace refuses to start or give warm air, get in touch with Pepper AC & Heat at 940-202-1184 for skilled furnace repair in Justin.

Our technicians will swiftly determine and handle the malfunction, even if you don’t have a Lennox heater. We can fix all kinds or models—and get the warmth returned to your house without delay.

What Does the Blinking Light on My Heating System Mean?

Your heating system depends on lights to flash code when it requires repairs. It also engages this setup to tell you it’s working like it should.

Normal operation involves:

  • Concurrent slow flash—furnace running properly.
  • Both lights flash fast—furnace is initiating the call for heat.

If you see a lone light going on and off slowly and the other going on and off rapidly, your heater may be experiencing a low flame signal. This can occur even when your heater is working correctly. It means the flame sensing rod could be dirty or in the incorrect spot on the burner. Contact us at 940-202-1184 for support.

Here are some of the most common issues for Lennox furnaces.

Heater Won’t Kick On

Here are a few of the light arrangements you could observe when your heater refuses to or keep operating. Most of these problems must be taken care of by a professional, for instance from Pepper AC & Heat.

  1. All LED lights are off. This means your heater might not have electricity. Examine the breaker box to confirm the heater fuse is not triggered. You should reset the fuse if it’s in the “off” position. If it promptly flips after a subsequent reset, don’t try to reset it again and contact us at 940-202-1184.
  2. One light is unchanging and the other is blinking slowly. This implies the flame rollout switch is likely malfunctioning. The part is an essential safety device that assists in stopping fires and carbon monoxide. You shouldn’t seek to repair this fault on your own.
  3. A single light is blinking quickly and the other is flickering slowly. This typically signifies power polarity has been reversed. Your heating system could have a wiring issue that needs professional support from Pepper AC & Heat.
  4. The duo of lights are blinking slowly. This means your furnace’s blower motor possibly isn’t working. This part circulates warm air from the HVAC system into your space. We can assist in figuring out what’s wrong with this part.
  5. An individual light is blinking slowly and the other is flashing fast. This means your HVAC system might have not enough voltage or a short circuit. Reach out to our specialists at 940-202-1184 for help.
  6. One light is flashing on, on, off while the other flickers on, off, on. This indicates there may be an issue with your heating system’s control panel or wiring. Pepper AC & Heat can pinpoint the fault and repair it.
  7. The pair of lights display every other slow flashes. This means your heating system possibly has a flame problem. There may be trouble with its gas supply, gas valve or ignitor control. Call us at 940-202-1184 for support.
  8. A single light blinks slowly while the other stays steady. This typically means your heater’s limit switch is malfunctioning. The switch prevents your heating system from getting too hot. Reach out to the specialists at Pepper AC & Heat for help.

Furnace Blower Works But No Warmth

Here’s what could be wrong when you hear your heater’s blower fan on, but you aren’t getting any warmth.

  • The pair of lights are showing every other rapid flashes. This means your furnace ignitor might not be working. This piece kindles gas in your HVAC equipment to create heat and should be serviced by an expert from Pepper AC & Heat.

Turn to Us for Expert Furnace Repair

When you have to have your heating system fixed quickly, trust the technicians at Pepper AC & Heat. Our technicians will handle the error quickly and have your house feeling relaxing again in no time. Reach out to us at 940-202-1184 or contact us online to schedule an appointment today.