While your Lennox® heating system isn’t able to chat with you, it possesses a procedure to tell you about a furnace error.

Its control board has twin LED lights that can show a fault code. Subject to the fault, your heater could use continuous or flashing lights.

Though there are some basic heating repairs you can complete on your own, the majority of fixes are best handled by HVAC technicians. When your heating system won’t start or deliver warm air, call Morgner Inc. Air Conditioning & Heating at 314-262-4541 for expert furnace repair in Saint Louis.

Our technicians will speedily identify and handle the problem, even if you don’t own a Lennox heater. We can service whichever types or configuration—and get the heat returned to your house quickly.

What Does the Flickering Light on My Furnace Mean?

Your heating system uses lights to flash code when it isn’t working right. It also works this setup to relay it’s heating properly.

Correct function includes:

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

If you realize that a lone light flashing slowly and the other flashing rapidly, your furnace could have a low flame signal. This can occur even when your heating system is running properly. It means the flame sensing rod could have buildup or in the wrong location on the burner. Contact us at 314-262-4541 for support.

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

Furnace Won’t Turn On

Here are a few of the light sequences you might notice when your heating system won’t turn on or keep heating. The bulk of these errors have to be handled by a professional, for instance from Morgner Inc. Air Conditioning & Heating.

  1. The pair of LED lights aren’t lit. This means your heater might not have electricity. Go to the breaker box to confirm the heating system fuse has not tripped. You should reset the fuse if it is in the “off” position. If it immediately turns off following a reset, don’t touch the breaker and contact us at 314-262-4541.
  2. One light is continuous and the other is blinking slowly. This signifies the flame rollout switch is possibly not working right. The switch is an essential safety guard that assists in stopping fires and carbon monoxide. You shouldn’t attempt to handle this issue without professional help.
  3. An individual light is flashing quickly and the other is flashing slowly. This likely signifies power polarity has been reversed. Your heater might have a wiring error that needs specialized aid from Morgner Inc. Air Conditioning & Heating.
  4. Both lights are flashing slowly. This indicates your heater’s blower motor possibly isn’t operating. This component distributes hot air from the heater into your house. We can assist in pinpointing what’s causing an issue with this part.
  5. One light is blinking slowly and the other is flashing fast. This means your heating system could have insufficient voltage or a short circuit. Get in touch with our experts at 314-262-4541 for assistance.
  6. One light is blinking on, on, off while the other flashes on, off, on. This indicates there may be a malfunction with your heating system’s control board or wiring. Morgner Inc. Air Conditioning & Heating can locate the problem and take care of it.
  7. The duo of lights show alternating slow flickers. This indicates your HVAC equipment may have a flame issue. There could be trouble with its gas supply, gas valve or ignitor control. Reach out to us at 314-262-4541 for assistance.
  8. An individual light flickers slowly while the other stays continuous. This often means your HVAC equipment’s limit switch is not working. The switch prevents your HVAC system from becoming too warm. Reach out to the professionals at Morgner Inc. Air Conditioning & Heating for help.

Furnace Blower Works But No Warm Air

Here’s what might be at fault when you notice your heating system’s blower fan working, but you aren’t gaining any warmth.

  • Both lights are giving alternate rapid flickers. This signifies your furnace ignitor may not be working. This part ignites energy in your furnace to create heat and should be serviced by a technician from Morgner Inc. Air Conditioning & Heating.

Turn to Us for Expert Furnace Repair

When you need to have your heating system repaired fast, turn to the technicians at Morgner Inc. Air Conditioning & Heating. Our technicians will fix the fault without delay and have your house feeling cozy again in no time. Get in touch with us at 314-262-4541 or contact us online to request an appointment today.