While your Lennox® HVAC equipment isn’t able to talk to you, it does have a way to get your attention when there’s a furnace error.

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

While there are some simple furnace fixes you can take care of on your own, many repairs are best handled by the professionals. When your heater refuses to turn on or deliver warm air, contact Rapids Sheet Metal Works Inc at 715-301-0256 for experienced furnace repair in Wisconsin Rapids.

Our specialists will speedily discover and repair the issue, even if you don’t use a Lennox heater. We can fix all brands or models—and get the heat returned to your home without delay.

What Does the Flickering Light on My Furnace Mean?

Your heater uses lights to flash code when it isn’t working right. It also uses this setup to let you know it’s working correctly.

Normal operation involves:

  • Concurrent slow flash—furnace operating correctly.
  • Both lights flash fast—heater is initiating the call for heat.

If you see a single light flashing slowly and the other flashing rapidly, your furnace could have a low flame signal. This can occur even when your heater is heating correctly. It signifies the flame sensing rod may be dirty or in the wrong spot on the burner. Call us at 715-301-0256 for help.

Here are several other of the most common problems for Lennox furnaces.

Heater Won’t Start

Here are a few of the light arrangements you might notice when your heat refuses to or keep running. The bulk of these errors need to be taken care of by a specialist, such as one from Rapids Sheet Metal Works Inc.

  1. The duo of LED lights are off. This indicates your heating system might not have power. Look at the breaker box to make sure the heating system fuse isn’t flipped. Try resetting the fuse if it’s in the “off” spot. If it rapidly trips after a subsequent reset, don’t touch the breaker and call us at 715-301-0256.
  2. An individual light is continuous and the other is blinking slowly. This implies the flame rollout switch is likely not working right. The switch is an essential safety mechanism that aids in preventing fires and carbon monoxide. You shouldn’t seek to repair this malfunction yourself.
  3. A single light is blinking quickly and the other is blinking slowly. This typically indicates power polarity has been transposed. Your heater might have a wiring issue that calls for specialized support from Rapids Sheet Metal Works Inc.
  4. All lights are flickering slowly. This indicates your heater’s blower motor possibly isn’t working. This component sends warm air from the heater into your home. We can aid in determining what’s causing a problem with this piece.
  5. One light is blinking slowly and the other is flickering rapidly. This signifies your HVAC system may have not enough voltage or a short circuit. Reach out to our specialists at 715-301-0256 for help.
  6. One light is flashing on, on, off while the other blinks on, off, on. This indicates there might be trouble with your HVAC system’s motherboard or wiring. Rapids Sheet Metal Works Inc can pinpoint the problem and take care of it.
  7. The pair of lights are using every other slow flashes. This indicates your heater possibly has a flame error. There may be an issue with its gas supply, gas valve or ignitor control. Contact us at 715-301-0256 for help.
  8. An individual light blinks slowly while the other remains continuous. This often means your heater’s limit switch is not working. The switch stops your heater from becoming too warm. Get in touch with the experts at Rapids Sheet Metal Works Inc for support.

Heater Blower Operates But No Warmth

Here’s what could be at fault when you observe your heater’s blower fan running, but you aren’t receiving any warmth.

  • Both lights display every other fast blinks. This signifies your furnace ignitor may not be in working order. This part ignites fuel in your heater to make warmth and should be fixed by a specialist from Rapids Sheet Metal Works Inc.

Trust Us for Skilled Furnace Repair

When you have to get your heater fixed without delay, turn to the specialists at Rapids Sheet Metal Works Inc. Our technicians will fix the issue without delay and have your rooms feeling relaxing again soon. Reach out to us at 715-301-0256 or contact us online to request an appointment now.