While your Lennox® furnace can’t talk to you, it does have a way to communicate a furnace error.

Its control panel has double LED lights that can display a fault code. Depending on the fault, your furnace could use continuous or flashing lights.

While there are some simple HVAC fixes you can take care of on your own, the majority of fixes are best left to the professionals. When your heater refuses to start or provide warmth, reach out to Walter's-Eaton's Electric, Plumbing, Heating & AC at 715-318-6728 for experienced furnace repair in Ellsworth.

Our technicians will speedily detect and fix the problem, even if you don’t have a Lennox heating system. We can fix all brands or makes—and get the warmth returned to your house quickly.

What Does the Flashing Light on My Furnace Mean?

Your heater depends on lights to flash code when it is malfunctioning. It also uses these lights to tell you it’s heating correctly.

Regular operation involves:

  • Simultaneous slow flash—heater running like it should.
  • Both lights flash fast—heating system is starting to call for heat.

If you realize that a lone light going on and off slowly and the other blinking fast, your heating system could have a low flame signal. This can take place even when your furnace is heating like it should. It signifies the flame sensing rod could have buildup or in the wrong spot on the burner. Contact us at 715-318-6728 for support.

Here are a few other of the most typical problems for Lennox heaters.

Heater Will Not Start

Here are some of the light arrangements you could see when your heat refuses to or keep heating. The majority of these issues must be handled by a professional, such as one from Walter's-Eaton's Electric, Plumbing, Heating & AC.

  1. The pair of LED lights are off. This signifies your heater might not have power. Examine the breaker box to confirm the heater fuse has not triggered. Attempt to reset the fuse if it is in the “off” spot. If it promptly trips following a reset, don’t try to reset it again and call us at 715-318-6728.
  2. A single light is stable and the other is flickering slowly. This shows the flame rollout switch is may be malfunctioning. The switch is an essential safety guard that helps in preventing fires and carbon monoxide. You shouldn’t attempt to repair this problem yourself.
  3. One light is flashing quickly and the other is blinking slowly. This typically signifies power polarity has been transposed. Your heater may have a wiring problem that calls for specialized help from Walter's-Eaton's Electric, Plumbing, Heating & AC.
  4. The duo of lights are flickering slowly. This means your furnace’s blower motor probably isn’t operating. This part sends hot air from the heater into your house. We can assist in figuring out what’s causing a problem with this piece.
  5. One light is blinking slowly and the other is flashing rapidly. This indicates your heater could have low voltage or a short circuit. Call our technicians at 715-318-6728 for support.
  6. One light is flickering on, on, off while the other flashes on, off, on. This indicates there could be an issue with your HVAC system’s motherboard or wiring. Walter's-Eaton's Electric, Plumbing, Heating & AC can determine the problem and repair it.
  7. The duo of lights display every other slow blinks. This signifies your heating system possibly has a flame issue. There could be an issue with its gas supply, gas valve or ignitor control. Reach out to us at 715-318-6728 for support.
  8. An individual light flashes slowly while the other is continuous. This usually indicates your HVAC system’s limit switch is not working. The switch keeps your HVAC equipment from overheating. Reach out to the pros at Walter's-Eaton's Electric, Plumbing, Heating & AC for support.

Heater Blower Operates But No Warm Air

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

  • The pair of lights are giving alternate rapid blinks. This signifies your furnace ignitor might not be working. This part kindles gas in your HVAC equipment to produce warmth and should be fixed by a technician from Walter's-Eaton's Electric, Plumbing, Heating & AC.

Depend on Us for Expert Furnace Repair

When you need to have your heater in working order quickly, trust the technicians at Walter's-Eaton's Electric, Plumbing, Heating & AC. Our techs will handle the fault quickly and have your rooms feeling relaxing again soon. Get in touch with us at 715-318-6728 or contact us online to schedule an appointment now.