While your Lennox® HVAC equipment isn’t able to chat with you, it does have a way to tell you about a furnace error.

Its motherboard has double LED lights that can display a fault code. Subject to the failure, your heating system may use continuous or flashing lights.

While there are various elementary furnace fixes you can finish without an expert, most tasks are best taken care of by experts. When your furnace refuses to kick on or deliver warm air, reach out to Service Max Heating & Air Conditioning at 360-255-5857 for professional furnace repair in Arlington.

Our technicians will rapidly discover and repair the issue, even if you don’t own a Lennox heater. We can service whichever brands or configuration—and get the warmth returned to your residence fast.

What Does the Flashing Light on My Furnace Mean?

Your heater depends on lights to flash code when it is malfunctioning. It also engages this system to tell you it’s operating properly.

Normal function consists of:

  • Simultaneous slow flash—furnace heating like it should.
  • Both lights flash fast—furnace is beginning to call for heat.

If you notice a lone light flashing slowly and the other going on and off quickly, your heater might be having a low flame signal. This can take place even when your furnace is operating like it should. It means the flame sensing rod might need to be cleaned or in the wrong spot on the burner. Reach out to us at 360-255-5857 for assistance.

Here are a few other of the most typical problems for Lennox heaters.

Furnace Will Not Turn On

Here are many of the light arrangements you might observe when your heat refuses to or keep running. The bulk of these errors need to be repaired by a specialist, like one from Service Max Heating & Air Conditioning.

  1. The pair of LED lights aren’t lit. This indicates your heating system might not have power. Find the breaker box to confirm the heater fuse has not triggered. You should reset the fuse if it’s in the “off” area. If it promptly flips after you reset it, don’t try to reset it again and call us at 360-255-5857.
  2. One light is stable and the other is blinking slowly. This signifies the flame rollout switch is possibly not working right. The component is an essential safety tool that aids in avoiding fires and carbon monoxide. You shouldn’t seek to repair this malfunction on your own.
  3. A single light is flickering quickly and the other is flickering slowly. This often signifies power polarity has been inverted. Your heater might have a wiring issue that calls for specialized aid from Service Max Heating & Air Conditioning.
  4. All lights are flickering slowly. This means your heating system’s blower motor likely isn’t operating. This piece moves hot air from the heating system into your house. We can assist in figuring out what’s causing a problem with this part.
  5. A single light is flashing slowly and the other is flickering rapidly. This indicates your heater could have not enough voltage or a short circuit. Get in touch with our experts at 360-255-5857 for support.
  6. One light is flickering on, on, off while the other flashes on, off, on. This means there could be a malfunction with your heating system’s control panel or wiring. Service Max Heating & Air Conditioning can find the error and handle it.
  7. The pair of lights show alternating slow blinks. This signifies your HVAC system likely has a flame failure. There could be an issue with its gas supply, gas valve or ignitor control. Contact us at 360-255-5857 for support.
  8. An individual light blinks slowly while the other is continuous. This usually signifies your heater’s limit switch is malfunctioning. The switch prevents your heating system from getting too hot. Reach out to the experts at Service Max Heating & Air Conditioning for help.

Heating System Blower Operates But No Warmth

Here’s what might be broken when you observe your heating system’s blower fan on, but you aren’t gaining any warmth.

  • The duo of lights display every other quick blinks. This signifies your furnace ignitor may be broken. This component kindles fuel in your HVAC equipment to create heat and should be serviced by a specialist from Service Max Heating & Air Conditioning.

Turn to Us for Expert Furnace Repair

When you have to have your heater in working order quickly, turn to the professionals at Service Max Heating & Air Conditioning. Our techs will fix the error without delay and have your space feeling relaxing again in a short time. Contact us at 360-255-5857 or contact us online to get an appointment today.