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

Its motherboard has double LED lights that can display a fault code. Based on the issue, your heating system may use continuous or flashing lights.

Although there are various basic furnace adjustments you can finish on your own, many services are best handled by the professionals. When your furnace refuses to turn on or provide heated air, reach out to Lanz Furnace and Fireplace at 608-291-3606 for skilled furnace repair in Monroe.

Our experts will quickly determine and fix the malfunction, even if you don’t own a Lennox heating system. We can repair all brands or makes—and get the heat reintroduced to your residence fast.

What Does the Flickering Light on My Heating System Mean?

Your furnace depends on lights to flash code when it requires repairs. It also works this setup to relay it’s operating correctly.

Normal heating involves:

  • Concurrent slow flash—furnace working like it should.
  • Simultaneous fast flash—furnace is starting to call for heat.

If you notice a single light flashing slowly and the other blinking quickly, your heater might be having a low flame signal. This can happen even when your heater is heating correctly. It indicates the flame sensing rod may have buildup or in the incorrect spot on the burner. Reach out to us at 608-291-3606 for help.

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

Furnace Will Not Kick On

Here are some of the light arrangements you might observe when your heat will not or keep heating. The majority of these errors have to be fixed by a technician, for instance from Lanz Furnace and Fireplace.

  1. Both LED lights are off. This signifies your HVAC system might not have electricity. Look at the breaker box to ensure the heating system fuse hasn’t tripped. Attempt to reset the fuse if it’s in the “off” area. If it instantly turns off after a subsequent reset, don’t try to reset it again and contact us at 608-291-3606.
  2. An individual light is stable and the other is flashing slowly. This implies the flame rollout switch is likely malfunctioning. The component is a critical safety device that assists in preventing fires and carbon monoxide. You shouldn’t attempt to take care of this issue yourself.
  3. A single light is flickering rapidly and the other is flashing slowly. This often indicates power polarity has been reversed. Your furnace may have a wiring issue that calls for expert assistance from Lanz Furnace and Fireplace.
  4. The pair of lights are blinking slowly. This indicates your furnace’s blower motor probably isn’t working. This part distributes warm air from the furnace into your home. We can assist in figuring out what’s wrong with this piece.
  5. A single light is flickering slowly and the other is flashing rapidly. This signifies your HVAC system might have not enough voltage or a short circuit. Reach out to our technicians at 608-291-3606 for support.
  6. One light is flashing on, on, off while the other blinks on, off, on. This means there could be trouble with your heater’s control board or wiring. Lanz Furnace and Fireplace can determine the problem and take care of it.
  7. Both lights are using alternating slow blinks. This indicates your HVAC equipment may have a flame error. There may be trouble with its gas supply, gas valve or ignitor control. Get in touch with us at 608-291-3606 for help.
  8. An individual light blinks slowly while the other stays continuous. This usually signifies your heating system’s limit switch is not working. The switch prevents your heater from overheating. Reach out to the experts at Lanz Furnace and Fireplace for support.

Furnace Blower Works But No Warm Air

Here’s what may be broken when you observe your heating system’s blower fan on, but you aren’t receiving any warmth.

  • The duo of lights display alternate quick flashes. This indicates your furnace ignitor might be broken. This component lights fuel in your furnace to create heat and should be repaired by a specialist from Lanz Furnace and Fireplace.

Trust Us for Expert Furnace Repair

When you need to get your heating system in working order without delay, trust the experts at Lanz Furnace and Fireplace. Our technicians will handle the fault quickly and have your house feeling comfortable again in a short time. Get in touch with us at 608-291-3606 or contact us online to schedule an appointment today.