While your Lennox® HVAC equipment cannot talk to you, it possesses a process to communicate a furnace error.

Its control panel has two LED lights that can share a fault code. Depending on the fault, your furnace could use steady or flashing lights.

Although there are various basic heating fixes you can finish yourself, most fixes are best left to the professionals. When your furnace refuses to turn on or provide heat, call Northglenn Heating & Air Conditioning at 303-452-4146 for skilled furnace repair in Northglenn.

Our specialists will swiftly determine and repair the issue, even if you don’t own a Lennox heating system. We can repair all brands or configuration—and get the heat reintroduced to your house without delay.

What Does the Blinking Light on My Furnace Mean?

Your heater uses lights to flash code when it requires repairs. It also engages these lights to relay it’s operating properly.

Correct heating involves:

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

If you notice a single light going on and off slowly and the other blinking rapidly, your furnace may have a low flame signal. This can happen even when your heater is operating properly. It signifies the flame sensing rod could be dirty or in the incorrect area on the burner. Reach out to us at 303-452-4146 for help.

Here are a few other of the most common faults for Lennox HVAC systems.

Heating System Will Not Turn On

Here are many of the light patterns you could see when your furnace won’t turn on or keep heating. Most of these issues need to be repaired by a technician, like one from Northglenn Heating & Air Conditioning.

  1. The duo of LED lights are extinguished. This indicates your heater might not have power. Look at the breaker box to ensure the heating system fuse isn’t flipped. Try resetting the fuse if it is in the “off” spot. If it promptly turns off after a subsequent reset, don’t try to reset it again and contact us at 303-452-4146.
  2. One light is unchanging and the other is flickering slowly. This signifies the flame rollout switch is may be open. The part is an essential safety guard that helps in avoiding fires and carbon monoxide. You shouldn’t seek to fix this problem on your own.
  3. One light is blinking rapidly and the other is flashing slowly. This likely indicates power polarity has been transposed. Your heating system may have a wiring issue that requires expert help from Northglenn Heating & Air Conditioning.
  4. The duo of lights are flickering slowly. This means your heating system’s blower motor likely isn’t running. This component sends heated air from the heater into your residence. We can aid in figuring out what’s causing an issue with this part.
  5. An individual light is flickering slowly and the other is blinking fast. This signifies your HVAC system could have low voltage or a short circuit. Reach out to our specialists at 303-452-4146 for assistance.
  6. One light is flashing on, on, off while the other flickers on, off, on. This indicates there might be an issue with your heating system’s control panel or wiring. Northglenn Heating & Air Conditioning can locate the fault and handle it.
  7. The pair of lights display alternate slow flashes. This signifies your heater may have a flame failure. There might be trouble with its gas supply, gas valve or ignitor control. Contact us at 303-452-4146 for help.
  8. A single light flashes slowly while the other stays continuous. This usually indicates your heater’s limit switch is experiencing an error. The switch keeps your HVAC equipment from getting too hot. Call the professionals at Northglenn Heating & Air Conditioning for help.

Furnace Blower Operates But No Warm Air

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

  • The duo of lights are showing alternate rapid flashes. This means your furnace ignitor could not be working. This component lights gas in your heating system to create warmth and should be repaired by an expert from Northglenn Heating & Air Conditioning.

Depend on Us for Professional Furnace Repair

When you have to get your HVAC equipment repaired without delay, trust the experts at Northglenn Heating & Air Conditioning. Our techs will fix the error right away and have your space feeling comfortable again in a short time. Reach out to us at 303-452-4146 or contact us online to get an appointment right away.