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

Its control board has twin LED lights that can share a fault code. Based on the fault, your heater may display solid or flashing lights.

Though there are certain elementary furnace adjustments you can take care of on your own, many fixes are best handled by HVAC technicians. When your furnace won’t turn on or provide warm air, get in touch with Connolly Electric & Mechanical at 928-251-4327 for skilled furnace repair in Cottonwood & Prescott.

Our experts will quickly identify and handle the problem, even if you don’t have a Lennox heating system. We can repair whichever types or makes—and get the warmth returned to your house quickly.

What Does the Flashing Light on My Heater Mean?

Your heating system depends on lights to flash code when it isn’t working right. It also uses this system to tell you it’s working correctly.

Regular function includes:

  • Simultaneous slow flash—heating system heating properly.
  • Simultaneous fast flash—furnace is beginning to call for heat.

If you notice a solitary light going on and off slowly and the other flashing quickly, your heater may be having a low flame signal. This can happen even when your furnace is working properly. It means the flame sensing rod might be dirty or in the incorrect spot on the burner. Call us at 928-251-4327 for support.

Here are some of the most common problems for Lennox HVAC systems.

Heating System Won’t Turn On

Here are a few of the light arrangements you could notice when your furnace refuses to or keep running. The majority of these problems have to be repaired by an expert, for instance from Connolly Electric & Mechanical.

  1. Both LED lights are off. This means your heating system might not be receiving power. Examine the breaker box to confirm the furnace fuse has not triggered. Try resetting the fuse if it is in the “off” position. If it instantly flips after you reset it, don’t touch the breaker and call us at 928-251-4327.
  2. One light is continuous and the other is blinking slowly. This implies the flame rollout switch is may be malfunctioning. The switch is an essential safety mechanism that aids in stopping fires and carbon monoxide. You shouldn’t seek to handle this fault without professional help.
  3. One light is flickering fast and the other is blinking slowly. This often signifies power polarity has been reversed. Your furnace might have a wiring issue that needs expert support from Connolly Electric & Mechanical.
  4. The duo of lights are flashing slowly. This signifies your furnace’s blower motor probably isn’t working. This component distributes hot air from the HVAC system into your space. We can aid in pinpointing what’s wrong with this part.
  5. A single light is flickering slowly and the other is blinking quickly. This indicates your HVAC system might have insufficient voltage or a short circuit. Contact our technicians at 928-251-4327 for support.
  6. One light is flashing on, on, off while the other flickers on, off, on. This indicates there might be a malfunction with your HVAC system’s motherboard or wiring. Connolly Electric & Mechanical can locate the issue and repair it.
  7. Both lights show alternating slow flickers. This signifies your heating system likely has a flame problem. There might be an issue with its gas supply, gas valve or ignitor control. Get in touch with us at 928-251-4327 for help.
  8. A single light blinks slowly while the other stays continuous. This often signifies your heater’s limit switch is not working. The switch keeps your heating system from getting too hot. Reach out to the specialists at Connolly Electric & Mechanical for assistance.

Heating System Blower Works But No Warmth

Here’s what could be broken when you hear your heater’s blower fan on, but you aren’t gaining any warmth.

  • Both lights are giving alternate rapid blinks. This means your furnace ignitor might not be working. This part lights energy in your HVAC equipment to make heat and should be fixed by an expert from Connolly Electric & Mechanical.

Turn to Us for Skilled Furnace Repair

When you have to get your HVAC equipment fixed fast, trust the professionals at Connolly Electric & Mechanical. Our technicians will fix the issue without delay and have your residence feeling relaxing again in no time. Reach out to us at 928-251-4327 or contact us online to request an appointment right away.