While your Lennox® HVAC equipment cannot talk to you, it possesses a procedure to get your attention when there’s a furnace error.

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

While there are a few basic furnace repairs you can finish on your own, most fixes are best left to experts. When your heating system refuses to start or give heat, reach out to Morgner Inc. Air Conditioning & Heating at 314-262-4541 for experienced furnace repair in Saint Louis.

Our technicians will swiftly determine and take care of the problem, even if you don’t own a Lennox heating system. We can service any kinds or configuration—and get the heat reintroduced to your house quickly.

What Does the Blinking Light on My Furnace Mean?

Your heating system depends on lights to flash code when it isn’t working right. It also uses this setup to tell you it’s operating properly.

Regular function includes:

  • Concurrent slow flash—heating system running like it should.
  • Simultaneous fast flash—heating system is initiating the call for heat.

If you realize that a solitary light flashing slowly and the other flashing rapidly, your heating system could be having a low flame signal. This can happen even when your heating system is working properly. It signifies the flame sensing rod may be dirty or in the wrong area on the burner. Reach out to us at 314-262-4541 for support.

Here are several other of the most common problems for Lennox HVAC systems.

Heater Will Not Kick On

Here are a few of the light patterns you may see when your heater refuses to or keep running. The majority of these problems need to be repaired by a technician, like one from Morgner Inc. Air Conditioning & Heating.

  1. The duo of LED lights are off. This indicates your heater might not be receiving power. Look at the breaker box to make sure the heating system fuse is not tripped. Try resetting the fuse if it’s in the “off” position. If it promptly flips following a reset, don’t try to reset it again and get in touch with us us at 314-262-4541.
  2. One light is stable and the other is flashing slowly. This signifies the flame rollout switch is may be malfunctioning. The switch is an essential safety guard that aids in avoiding fires and carbon monoxide. You shouldn’t try to fix this malfunction without professional help.
  3. A single light is blinking fast and the other is flashing slowly. This likely indicates power polarity has been inverted. Your heater might have a wiring fault that calls for professional aid from Morgner Inc. Air Conditioning & Heating.
  4. All lights are flashing slowly. This indicates your heating system’s blower motor possibly isn’t operating. This piece moves heated air from the furnace into your space. We can assist in pinpointing what’s causing an issue with this part.
  5. A single light is blinking slowly and the other is blinking quickly. This indicates your heating system might have not enough voltage or a short circuit. Reach out to our specialists at 314-262-4541 for help.
  6. One light is flashing on, on, off while the other flickers on, off, on. This means there might be a malfunction with your heating system’s control board or wiring. Morgner Inc. Air Conditioning & Heating can determine the fault and handle it.
  7. The duo of lights are using every other slow blinks. This signifies your HVAC equipment possibly has a flame problem. There might be an issue with its gas supply, gas valve or ignitor control. Contact us at 314-262-4541 for help.
  8. An individual light flashes slowly while the other stays solid. This often signifies your heater’s limit switch is experiencing an error. The switch keeps your heater from becoming too warm. Call the pros at Morgner Inc. Air Conditioning & Heating for help.

Heater Blower Runs But No Warmth

Here’s what might be wrong when you notice your heating system’s blower fan running, but you aren’t receiving any warm air.

  • The pair of lights are showing every other rapid blinks. This signifies your furnace ignitor may not be in working order. This part ignites gas in your HVAC equipment to produce heat and should be serviced by a specialist from Morgner Inc. Air Conditioning & Heating.

Trust Us for Skilled Furnace Repair

When you have to have your HVAC equipment repaired without delay, depend on the professionals at Morgner Inc. Air Conditioning & Heating. Our techs will repair the issue right away and have your rooms feeling comfortable again in a short time. Reach out to us at 314-262-4541 or contact us online to request an appointment now.