While your Lennox® furnace can’t speak to you, it possesses a procedure to communicate a furnace error.

Its motherboard has twin LED lights that can show a fault code. Based on the fault, your heater might display steady or flashing lights.

Though there are a few simple HVAC fixes you can do without an expert, most repairs are best left to the professionals. When your heater won’t kick on or provide warmth, get in touch with Farnell Heating & Air Conditioning Inc at 251-471-2674 for professional furnace repair in Mobile.

Our specialists will rapidly determine and take care of the malfunction, even if you don’t own a Lennox heater. We can fix any brands or configuration—and get the heat reintroduced to your home fast.

What Does the Flashing Light on My Heating System Mean?

Your heating system relies on lights to flash code when it requires repairs. It also engages this setup to let you know it’s operating correctly.

Regular heating involves:

  • Concurrent slow flash—heating system operating correctly.
  • Concurrent fast flash—furnace is initiating the call for heat.

If you see a single light blinking slowly and the other blinking rapidly, your heater may be experiencing a low flame signal. This can take place even when your heating system is operating like it should. It means the flame sensing rod could be dirty or in the wrong area on the burner. Reach out to us at 251-471-2674 for help.

Here are several other of the most typical errors for Lennox HVAC systems.

Heater Refuses to Kick On

Here are some of the light arrangements you might see when your heat won’t turn on or keep heating. Most of these problems have to be taken care of by a technician, such as one from Farnell Heating & Air Conditioning Inc.

  1. All LED lights are extinguished. This signifies your HVAC system might not have power. Find the breaker box to confirm the furnace fuse hasn’t flipped. Attempt to reset the fuse if it is in the “off” area. If it promptly flips after you reset it, don’t try to reset it again and get in touch with us us at 251-471-2674.
  2. An individual light is stable and the other is flickering slowly. This implies the flame rollout switch is may be malfunctioning. The switch is an essential safety device that helps in preventing fires and carbon monoxide. You shouldn’t try to repair this problem on your own.
  3. A single light is flashing fast and the other is flashing slowly. This often means power polarity has been transposed. Your furnace may have a wiring issue that calls for professional aid from Farnell Heating & Air Conditioning Inc.
  4. The pair of lights are blinking slowly. This signifies your heater’s blower motor likely isn’t operating. This component distributes hot air from the HVAC system into your residence. We can help in figuring out what’s causing a problem with this part.
  5. An individual light is blinking slowly and the other is blinking fast. This signifies your HVAC system might have not enough voltage or a short circuit. Get in touch with our specialists at 251-471-2674 for help.
  6. One light is flashing on, on, off while the other flickers on, off, on. This signifies there may be an issue with your HVAC system’s motherboard or wiring. Farnell Heating & Air Conditioning Inc can find the problem and fix it.
  7. The pair of lights are using alternate slow blinks. This signifies your HVAC system may have a flame error. There might be a problem with its gas supply, gas valve or ignitor control. Call us at 251-471-2674 for assistance.
  8. A single light blinks slowly while the other is solid. This typically signifies your heater’s limit switch is not working. The switch stops your HVAC equipment from getting too hot. Call the specialists at Farnell Heating & Air Conditioning Inc for support.

Furnace Blower Runs But No Warm Air

Here’s what could be at fault when you observe your heater’s blower fan running, but you aren’t receiving any warm air.

  • The duo of lights are showing alternate rapid flickers. This signifies your furnace ignitor could not be working. This part lights energy in your furnace to produce heat and should be repaired by a technician from Farnell Heating & Air Conditioning Inc.

Trust Us for Expert Furnace Repair

When you have to have your HVAC equipment repaired quickly, turn to the technicians at Farnell Heating & Air Conditioning Inc. Our techs will handle the fault without delay and have your residence feeling cozy again in a short time. Get in touch with us at 251-471-2674 or contact us online to get an appointment right away.