While your Lennox® furnace cannot speak to you, it does have a method to communicate a furnace error.

Its control board has a set of LED lights that can show a fault code. Subject to the malfunction, your heating system might show solid or flashing lights.

Though there are certain simple HVAC adjustments you can do yourself, the majority of services are best left to experts. When your heater refuses to kick on or provide warmth, get in touch with Alpine Summit Heating & Cooling at 208-561-1226 for expert furnace repair in Athol.

Our experts will speedily discover and fix the breakdown, even if you don’t use a Lennox heater. We can service whichever types or configuration—and get the comfort returned to your house fast.

What Does the Flashing Light on My Heater Mean?

Your furnace relies on lights to flash code when it isn’t working right. It also uses this system to let you know it’s heating correctly.

Regular function involves:

  • Concurrent slow flash—heater working properly.
  • Simultaneous fast flash—heating system is initiating the call for heat.

If you notice a single light flashing slowly and the other going on and off fast, your furnace might be having a low flame signal. This can occur even when your heating system is running properly. It means the flame sensing rod may have buildup or in the wrong location on the burner. Reach out to us at 208-561-1226 for assistance.

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

Heating System Will Not Turn On

Here are some of the light sequences you might notice when your heater refuses to or keep running. The majority of these errors need to be repaired by a professional, like one from Alpine Summit Heating & Cooling.

  1. All LED lights are extinguished. This signifies your HVAC system might not have electricity. Examine the breaker box to confirm the heater fuse hasn’t tripped. You should reset the fuse if it is in the “off” spot. If it immediately trips after you reset it, don’t touch the breaker and contact us at 208-561-1226.
  2. One light is stable and the other is blinking slowly. This implies the flame rollout switch is may be malfunctioning. The switch is an essential safety guard that helps in avoiding fires and carbon monoxide. You shouldn’t try to fix this issue without professional help.
  3. A single light is flickering fast and the other is flickering slowly. This likely indicates power polarity has been inverted. Your furnace might have a wiring problem that calls for expert support from Alpine Summit Heating & Cooling.
  4. The pair of lights are flashing slowly. This signifies your heater’s blower motor probably isn’t working. This part moves heated air from the heater into your residence. We can aid in determining what’s wrong with this part.
  5. An individual light is blinking slowly and the other is flashing fast. This means your HVAC system could have insufficient voltage or a short circuit. Contact our experts at 208-561-1226 for support.
  6. One light is flashing on, on, off while the other flickers on, off, on. This indicates there could be trouble with your HVAC system’s motherboard or wiring. Alpine Summit Heating & Cooling can determine the issue and handle it.
  7. The duo of lights display alternate slow flashes. This signifies your heating system possibly has a flame problem. There could be trouble with its gas supply, gas valve or ignitor control. Contact us at 208-561-1226 for support.
  8. A single light flickers slowly while the other is steady. This usually means your HVAC equipment’s limit switch is not working. The switch stops your HVAC equipment from overheating. Get in touch with the experts at Alpine Summit Heating & Cooling for help.

Heating System Blower Operates But No Heat

Here’s what might be broken when you hear your heating equipment’s blower fan running, but you aren’t gaining any heated air.

  • Both lights are showing alternate fast blinks. This signifies your furnace ignitor could be broken. This piece lights fuel in your HVAC equipment to make heat and should be repaired by a specialist from Alpine Summit Heating & Cooling.

Turn to Us for Expert Furnace Repair

When you need to get your heating system in working order without delay, turn to the specialists at Alpine Summit Heating & Cooling. Our technicians will handle the error quickly and have your residence feeling relaxing again in a short time. Reach out to us at 208-561-1226 or contact us online to schedule an appointment today.