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

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

While there are some simple furnace fixes you can finish on your own, many repairs are best left to HVAC technicians. When your heater refuses to turn on or deliver heat, call Integrity AC & Heating LLC at 602-971-0567 for professional furnace repair in Phoenix.

Our specialists will rapidly determine and handle the breakdown, even if you don’t have a Lennox heating system. We can service whichever kinds or makes—and get the warmth returned to your residence fast.

What Does the Flashing Light on My Heating System Mean?

Your heater uses lights to flash code when it requires repairs. It also engages this system to tell you it’s heating properly.

Correct operation includes:

  • Simultaneous slow flash—heater operating like it should.
  • Both lights flash fast—furnace is initiating the call for heat.

If you realize that a solitary light blinking slowly and the other flashing fast, your heater might be having a low flame signal. This can happen even when your furnace is working correctly. It means the flame sensing rod may need to be cleaned or in the wrong spot on the burner. Contact us at 602-971-0567 for help.

Here are a few other of the most common problems for Lennox heating systems.

Furnace Refuses to Start

Here are a few of the light arrangements you might see when your furnace won’t turn on or keep running. The majority of these problems have to be fixed by an expert, like one from Integrity AC & Heating LLC.

  1. The pair of LED lights aren’t lit. This indicates your heater might not be receiving power. Go to the breaker box to confirm the furnace fuse hasn’t triggered. You should reset the fuse if it is in the “off” position. If it instantly turns off after you reset it, don’t try to reset it again and contact us at 602-971-0567.
  2. A single light is stable and the other is flickering slowly. This signifies the flame rollout switch is possibly not working right. The switch is an essential safety guard that helps in preventing fires and carbon monoxide. You shouldn’t try to take care of this fault yourself.
  3. One light is blinking quickly and the other is flashing slowly. This typically signifies power polarity has been reversed. Your heating system could have a wiring fault that needs expert help from Integrity AC & Heating LLC.
  4. The pair of lights are blinking slowly. This means your furnace’s blower motor possibly isn’t operating. This component distributes heated air from the heater into your home. We can aid in figuring out what’s causing an issue with this piece.
  5. One light is flashing slowly and the other is flashing quickly. This signifies your heating system might have low voltage or a short circuit. Get in touch with our technicians at 602-971-0567 for support.
  6. One light is blinking on, on, off while the other flickers on, off, on. This signifies there might be a fault with your heating system’s control panel or wiring. Integrity AC & Heating LLC can determine the problem and handle it.
  7. The duo of lights display every other slow flashes. This means your HVAC equipment may have a flame error. There could be trouble with its gas supply, gas valve or ignitor control. Reach out to us at 602-971-0567 for help.
  8. An individual light flickers slowly while the other stays solid. This often means your heating system’s limit switch is not working. The switch prevents your heater from overheating. Call the professionals at Integrity AC & Heating LLC for support.

Heater Blower Runs But No Heat

Here’s what could be broken when you observe your heater’s blower fan on, but you aren’t getting any heated air.

  • The duo of lights are giving alternate rapid blinks. This signifies your furnace ignitor may not be in working order. This part lights fuel in your HVAC equipment to make warmth and should be fixed by an expert from Integrity AC & Heating LLC.

Trust Us for Expert Furnace Repair

When you have to get your heater in working order fast, trust the professionals at Integrity AC & Heating LLC. Our pros will take care of the error right away and have your residence feeling relaxing again in a short time. Contact us at 602-971-0567 or contact us online to request an appointment now.