While your Lennox® heating system cannot speak to you, it has a procedure to tell you about a furnace error.

Its control board has two LED lights that can display a fault code. Depending on the failure, your furnace may show steady or flashing lights.

Though there are certain simple HVAC adjustments you can do without an expert, most services are best handled by HVAC technicians. When your heater refuses to start or deliver warm air, contact Farnell Mechanical, Inc. at 334-524-2458 for expert furnace repair in Auburn and Opelika.

Our technicians will swiftly identify and handle the issue, even if you don’t use a Lennox heating system. We can service whichever kinds or models—and get the comfort reintroduced to your house without delay.

What Does the Flickering Light on My Furnace Mean?

Your heating system uses lights to flash code when it is malfunctioning. It also engages this system to relay it’s working like it should.

Normal function includes:

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

If you see a lone light flashing slowly and the other going on and off quickly, your heating system may be experiencing a low flame signal. This can happen even when your furnace is operating properly. It indicates the flame sensing rod might need to be cleaned or in the incorrect location on the burner. Contact us at 334-524-2458 for help.

Here are a few other of the most routine issues for Lennox heating systems.

Heater Refuses to Start

Here are many of the light sequences you might see when your heat refuses to or keep operating. Most of these issues must be fixed by an expert, such as one from Farnell Mechanical, Inc..

  1. The pair of LED lights aren’t lit. This signifies your heating system might not be receiving power. Go to the breaker box to confirm the furnace fuse is not flipped. Attempt to reset the fuse if it is in the “off” area. If it instantly flips after a subsequent reset, don’t try to reset it again and get in touch with us us at 334-524-2458.
  2. One light is continuous and the other is flashing slowly. This signifies the flame rollout switch is likely malfunctioning. The switch is a critical safety tool that aids in stopping fires and carbon monoxide. You shouldn’t try to handle this malfunction on your own.
  3. A single light is blinking fast and the other is blinking slowly. This typically signifies power polarity has been inverted. Your furnace could have a wiring problem that needs professional support from Farnell Mechanical, Inc..
  4. The pair of lights are flickering slowly. This means your heating system’s blower motor probably isn’t running. This piece moves heated air from the heating system into your space. We can assist in pinpointing what’s causing a problem with this part.
  5. A single light is flashing slowly and the other is blinking rapidly. This means your heating system might have not enough voltage or a short circuit. Get in touch with our experts at 334-524-2458 for assistance.
  6. One light is flickering on, on, off while the other flickers on, off, on. This means there could be an issue with your HVAC system’s control panel or wiring. Farnell Mechanical, Inc. can locate the error and handle it.
  7. The pair of lights are using every other slow blinks. This signifies your HVAC system possibly has a flame problem. There could be a problem with its gas supply, gas valve or ignitor control. Call us at 334-524-2458 for support.
  8. An individual light flashes slowly while the other stays steady. This typically signifies your HVAC equipment’s limit switch is malfunctioning. The switch keeps your heater from getting too hot. Call the specialists at Farnell Mechanical, Inc. for assistance.

Heating System Blower Runs But No Heat

Here’s what may be wrong when you hear your heating system’s blower fan on, but you aren’t gaining any warmth.

  • The pair of lights display every other rapid blinks. This indicates your furnace ignitor may be broken. This piece lights fuel in your heater to make warmth and should be serviced by a technician from Farnell Mechanical, Inc..

Turn to Us for Professional Furnace Repair

When you have to have your heating system in working order fast, turn to the specialists at Farnell Mechanical, Inc.. Our techs will fix the fault without delay and have your space feeling cozy again in a short time. Contact us at 334-524-2458 or contact us online to get an appointment right away.