While your Lennox® furnace isn’t able to speak to you, it does have a process to tell you about a furnace error.

Its motherboard has double LED lights that can show a fault code. Subject to the fault, your furnace could show solid or flashing lights.

Though there are certain elementary heating repairs you can take care of on your own, the majority of tasks are best handled by HVAC technicians. When your heater will not turn on or deliver heated air, get in touch with Pure Comfort Heating and Air Conditioning at 630-313-2509 for experienced furnace repair in Streamwood.

Our experts will swiftly discover and handle the problem, even if you don’t own a Lennox heating system. We can service all brands or models—and get the heat returned to your home without delay.

What Does the Flickering Light on My Heating System Mean?

Your furnace uses lights to flash code when it requires repairs. It also works this setup to tell you it’s operating correctly.

Correct function involves:

  • Concurrent slow flash—heating system running properly.
  • Concurrent fast flash—heater is beginning to call for heat.

If you notice a single light flashing slowly and the other blinking fast, your heater may be experiencing a low flame signal. This can happen even when your heating system is operating properly. It means the flame sensing rod may have buildup or in the bad spot on the burner. Call us at 630-313-2509 for support.

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

Furnace Won’t Kick On

Here are many of the light arrangements you may see when your furnace refuses to or keep operating. The majority of these issues must be taken care of by a professional, such as one from Pure Comfort Heating and Air Conditioning.

  1. The duo of LED lights are off. This means your HVAC system might not have power. Find the breaker box to make sure the heating system fuse is not triggered. Attempt to reset the fuse if it is in the “off” position. If it immediately flips after you reset it, don’t touch the breaker and call us at 630-313-2509.
  2. A single light is unchanging and the other is flickering slowly. This signifies the flame rollout switch is likely not working right. The switch is an essential safety mechanism that aids in avoiding fires and carbon monoxide. You shouldn’t try to take care of this problem yourself.
  3. A single light is flashing fast and the other is blinking slowly. This typically signifies power polarity has been reversed. Your furnace may have a wiring fault that needs professional aid from Pure Comfort Heating and Air Conditioning.
  4. The pair of lights are blinking slowly. This signifies your heater’s blower motor possibly isn’t working. This component sends hot air from the heater into your house. We can help in determining what’s causing a problem with this piece.
  5. One light is flashing slowly and the other is flickering fast. This indicates your heating system might have not enough voltage or a short circuit. Contact our technicians at 630-313-2509 for assistance.
  6. One light is flashing on, on, off while the other blinks on, off, on. This means there may be a malfunction with your HVAC system’s motherboard or wiring. Pure Comfort Heating and Air Conditioning can determine the fault and repair it.
  7. The duo of lights show alternate slow flashes. This signifies your HVAC system possibly has a flame error. There could be a problem with its gas supply, gas valve or ignitor control. Contact us at 630-313-2509 for help.
  8. A single light blinks slowly while the other is steady. This often signifies your heating system’s limit switch is not working. The switch keeps your HVAC equipment from overheating. Reach out to the specialists at Pure Comfort Heating and Air Conditioning for help.

Furnace Blower Works But No Heat

Here’s what may be broken when you notice your heating equipment’s blower fan on, but you aren’t getting any heated air.

  • The duo of lights are giving alternate fast flashes. This means your furnace ignitor might not be in working order. This part lights fuel in your heating system to produce heat and should be repaired by an expert from Pure Comfort Heating and Air Conditioning.

Trust Us for Skilled Furnace Repair

When you need to have your heater in working order fast, turn to the experts at Pure Comfort Heating and Air Conditioning. Our techs will take care of the fault right away and have your space feeling relaxing again in a short time. Contact us at 630-313-2509 or contact us online to request an appointment now.