While your Lennox® furnace cannot chat with you, it does have a procedure to tell you about a furnace error.

Its control board has two LED lights that can share a fault code. Subject to the fault, your heating system might display solid or flashing lights.

Although there are certain elementary HVAC repairs you can complete yourself, many fixes are best handled by HVAC technicians. When your heating system won’t turn on or deliver heated air, contact Heartland Heating & Cooling at 515-344-3579 for skilled furnace repair in Des Moines.

Our experts will quickly identify and handle the breakdown, even if you don’t have a Lennox heating system. We can service whichever kinds or models—and get the comfort returned to your house without delay.

What Does the Flickering Light on My Furnace Mean?

Your furnace relies on lights to flash code when it is malfunctioning. It also engages this system to let you know it’s operating correctly.

Correct function involves:

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

If you realize that a solitary light going on and off slowly and the other blinking quickly, your furnace could have a low flame signal. This can occur even when your heating system is working properly. It means the flame sensing rod could have buildup or in the bad area on the burner. Contact us at 515-344-3579 for support.

Here are some of the most common problems for Lennox furnaces.

Heating System Will Not Turn On

Here are a few of the light patterns you could notice when your heating system will not or keep running. The bulk of these errors need to be handled by an expert, like one from Heartland Heating & Cooling.

  1. The duo of LED lights are extinguished. This indicates your heater might not have power. Look at the breaker box to confirm the heater fuse has not triggered. You should reset the fuse if it is in the “off” position. If it immediately turns off after you reset it, don’t try to reset it again and get in touch with us us at 515-344-3579.
  2. An individual light is stable and the other is flashing slowly. This signifies the flame rollout switch is may be malfunctioning. The component is an essential safety tool that aids in avoiding fires and carbon monoxide. You shouldn’t try to take care of this fault yourself.
  3. One light is flickering quickly and the other is blinking slowly. This typically means power polarity has been inverted. Your furnace might have a wiring issue that requires specialized aid from Heartland Heating & Cooling.
  4. Both lights are flickering slowly. This signifies your heating system’s blower motor probably isn’t operating. This piece distributes hot air from the HVAC system into your space. We can help in determining what’s wrong with this piece.
  5. An individual light is flashing slowly and the other is flashing fast. This signifies your heater may have not enough voltage or a short circuit. Get in touch with our specialists at 515-344-3579 for assistance.
  6. One light is flickering on, on, off while the other flashes on, off, on. This indicates there might be a fault with your heater’s motherboard or wiring. Heartland Heating & Cooling can determine the problem and take care of it.
  7. Both lights show alternate slow flashes. This signifies your HVAC equipment possibly has a flame problem. There might be trouble with its gas supply, gas valve or ignitor control. Get in touch with us at 515-344-3579 for help.
  8. A single light flickers slowly while the other is steady. This usually signifies your HVAC system’s limit switch is experiencing an error. The switch prevents your HVAC equipment from becoming too warm. Get in touch with the pros at Heartland Heating & Cooling for help.

Heating System Blower Operates But No Warmth

Here’s what may be broken when you notice your heating equipment’s blower fan running, but you aren’t gaining any warmth.

  • The duo of lights are showing alternate fast flashes. This means your furnace ignitor could be broken. This part kindles energy in your heater to create warm air and should be repaired by an expert from Heartland Heating & Cooling.

Depend on Us for Professional Furnace Repair

When you have to get your HVAC equipment fixed quickly, turn to the experts at Heartland Heating & Cooling. Our techs will handle the error without delay and have your house feeling relaxing again soon. Get in touch with us at 515-344-3579 or contact us online to request an appointment now.