While your Lennox® furnace cannot chat with you, it has a way to get your attention when there’s a furnace error.

Its motherboard has twin LED lights that can show a fault code. Based on the problem, your heater might display solid or flashing lights.

While there are some simple furnace adjustments you can finish without an expert, the majority of fixes are best taken care of by experts. When your heating system won’t kick on or put out warmth, call Wallpe Heating & Cooling at 812-663-7252 for professional furnace repair in Greensburg.

Our experts will swiftly determine and repair the problem, even if you don’t have a Lennox heater. We can fix all types or models—and get the heat returned to your home fast.

What Does the Flashing Light on My Heating System Mean?

Your furnace depends on lights to flash code when it is malfunctioning. It also uses this system to let you know it’s working properly.

Correct operation includes:

  • Concurrent slow flash—heating system working correctly.
  • Both lights flash fast—furnace is initiating the call for heat.

If you realize that a lone light blinking slowly and the other blinking rapidly, your heating system could be experiencing a low flame signal. This can take place even when your furnace is working like it should. It means the flame sensing rod may be dirty or in the wrong spot on the burner. Contact us at 812-663-7252 for help.

Here are some of the most typical problems for Lennox furnaces.

Furnace Won’t Turn On

Here are many of the light arrangements you could observe when your heating system refuses to or keep heating. Most of these issues must be repaired by a technician, such as one from Wallpe Heating & Cooling.

  1. Both LED lights aren’t lit. This signifies your heater might not have electricity. Look at the breaker box to make sure the furnace fuse hasn’t flipped. Attempt to reset the fuse if it’s in the “off” position. If it immediately turns off after a subsequent reset, don’t try to reset it again and call us at 812-663-7252.
  2. An individual light is unchanging and the other is flickering slowly. This signifies the flame rollout switch is likely open. The switch is a critical safety mechanism that aids in preventing fires and carbon monoxide. You shouldn’t try to take care of this malfunction without professional help.
  3. One light is flashing fast and the other is flashing slowly. This typically indicates power polarity has been reversed. Your furnace may have a wiring error that calls for expert help from Wallpe Heating & Cooling.
  4. The duo of lights are blinking slowly. This means your heating system’s blower motor possibly isn’t operating. This piece sends warm air from the HVAC system into your rooms. We can assist in figuring out what’s causing an issue with this piece.
  5. One light is blinking slowly and the other is blinking quickly. This means your heater might have insufficient voltage or a short circuit. Contact our specialists at 812-663-7252 for assistance.
  6. One light is blinking on, on, off while the other blinks on, off, on. This means there could be an issue with your heater’s control board or wiring. Wallpe Heating & Cooling can find the fault and repair it.
  7. The duo of lights are using alternating slow flashes. This indicates your heater possibly has a flame error. There could be trouble with its gas supply, gas valve or ignitor control. Contact us at 812-663-7252 for support.
  8. An individual light blinks slowly while the other is steady. This usually signifies your HVAC system’s limit switch is malfunctioning. The switch keeps your HVAC system from overheating. Call the professionals at Wallpe Heating & Cooling for assistance.

Furnace Blower Works But No Warm Air

Here’s what may be at fault when you observe your heating equipment’s blower fan working, but you aren’t getting any warm air.

  • Both lights display alternate rapid blinks. This indicates your furnace ignitor could not be working. This component lights gas in your HVAC equipment to create warmth and should be repaired by a specialist from Wallpe Heating & Cooling.

Turn to Us for Expert Furnace Repair

When you have to get your HVAC equipment fixed without delay, trust the specialists at Wallpe Heating & Cooling. Our techs will repair the error without delay and have your house feeling relaxing again soon. Get in touch with us at 812-663-7252 or contact us online to schedule an appointment now.