While your Lennox® heating system cannot talk to you, it does have a method to tell you about a furnace error.

Its motherboard has two LED lights that can share a fault code. Subject to the failure, your heating system may display solid or flashing lights.

Although there are a few basic heating repairs you can do yourself, the majority of tasks are best left to HVAC technicians. When your furnace refuses to turn on or deliver warm air, get in touch with Heartland Heating & Cooling at 515-344-3579 for expert furnace repair in Des Moines.

Our specialists will swiftly determine and repair the issue, even if you don’t own a Lennox heating system. We can service all brands or makes—and get the comfort returned to your residence without delay.

What Does the Blinking Light on My Heating System Mean?

Your heating system depends on lights to flash code when it is malfunctioning. It also uses this system to let you know it’s operating like it should.

Regular heating consists of:

  • Simultaneous slow flash—heating system working correctly.
  • Both lights flash fast—heating system is starting to call for heat.

If you see a single light blinking slowly and the other going on and off rapidly, your heater might be experiencing a low flame signal. This can take place even when your heating system is heating like it should. It indicates the flame sensing rod might have buildup or in the wrong area on the burner. Contact us at 515-344-3579 for assistance.

Here are a few other of the most common errors for Lennox furnaces.

Heater Will Not Turn On

Here are some of the light patterns you could see when your heat refuses to or keep operating. The majority of these errors need to be fixed by an expert, like one from Heartland Heating & Cooling.

  1. Both LED lights are extinguished. This signifies your heating system might not be receiving power. Examine the breaker box to ensure the heater fuse hasn’t triggered. Attempt to reset the fuse if it’s in the “off” spot. If it rapidly flips following a reset, don’t touch the breaker and contact us at 515-344-3579.
  2. An individual light is continuous and the other is blinking slowly. This shows the flame rollout switch is likely malfunctioning. The component is an essential safety guard that helps in preventing fires and carbon monoxide. You shouldn’t try to repair this issue on your own.
  3. A single light is flashing rapidly and the other is flashing slowly. This typically indicates power polarity has been inverted. Your heating system could have a wiring problem that calls for professional support from Heartland Heating & Cooling.
  4. All lights are blinking slowly. This indicates your heater’s blower motor likely isn’t working. This component distributes warm air from the heating system into your residence. We can assist in figuring out what’s causing a problem with this piece.
  5. One light is flickering slowly and the other is blinking rapidly. This means your heater could have not enough voltage or a short circuit. Get in touch with our technicians at 515-344-3579 for assistance.
  6. One light is blinking on, on, off while the other blinks on, off, on. This indicates there could be a malfunction with your heater’s motherboard or wiring. Heartland Heating & Cooling can locate the problem and fix it.
  7. Both lights are using alternating slow flickers. This signifies your HVAC equipment may have a flame error. There may be an issue with its gas supply, gas valve or ignitor control. Reach out to us at 515-344-3579 for support.
  8. A single light blinks slowly while the other is continuous. This often indicates your HVAC equipment’s limit switch is not working. The switch stops your heater from overheating. Get in touch with the pros at Heartland Heating & Cooling for assistance.

Heating System Blower Operates But No Warmth

Here’s what may be wrong when you observe your heating equipment’s blower fan working, but you aren’t gaining any warm air.

  • The pair of lights are showing alternate rapid blinks. This indicates your furnace ignitor might not be in working order. This part kindles fuel in your heater to create warmth and should be fixed by a specialist from Heartland Heating & Cooling.

Turn to Us for Expert Furnace Repair

When you need to have your HVAC equipment in working order fast, turn to the professionals at Heartland Heating & Cooling. Our technicians will fix the issue without delay and have your space feeling cozy again in no time. Get in touch with us at 515-344-3579 or contact us online to schedule an appointment now.