While your Lennox® furnace isn’t able to speak to you, it possesses a way to get your attention when there’s a furnace error.

Its control panel has twin LED lights that can share a fault code. Subject to the fault, your heating system may use solid or flashing lights.

While there are various basic furnace fixes you can complete on your own, many tasks are best taken care of by HVAC technicians. When your furnace will not turn on or deliver warmth, get in touch with US Air Heating and Cooling at 803-220-0761 for professional furnace repair in Rock Hill.

Our experts will quickly determine and take care of the malfunction, even if you don’t use a Lennox heating system. We can fix all kinds or models—and get the heat returned to your house fast.

What Does the Flickering Light on My Heater Mean?

Your furnace uses lights to flash code when it is malfunctioning. It also engages this system to tell you it’s working properly.

Correct heating includes:

  • Concurrent slow flash—heating system operating properly.
  • Simultaneous fast flash—heating system is beginning to call for heat.

If you see a lone light flashing slowly and the other flashing quickly, your heater may be experiencing a low flame signal. This can happen even when your heating system is operating correctly. It means the flame sensing rod might have buildup or in the incorrect area on the burner. Call us at 803-220-0761 for assistance.

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

Heating System Will Not Turn On

Here are a few of the light patterns you could notice when your heat won’t turn on or keep operating. The majority of these problems have to be taken care of by a technician, for instance from US Air Heating and Cooling.

  1. The pair of LED lights are extinguished. This means your HVAC system might not have power. Examine the breaker box to make sure the furnace fuse is not tripped. Try resetting the fuse if it is in the “off” area. If it immediately turns off after a subsequent reset, don’t try to reset it again and call us at 803-220-0761.
  2. An individual light is unchanging and the other is flashing slowly. This implies the flame rollout switch is likely open. The part is an essential safety device that aids in preventing fires and carbon monoxide. You shouldn’t seek to handle this fault on your own.
  3. One light is flickering rapidly and the other is flickering slowly. This often signifies power polarity has been inverted. Your heater could have a wiring problem that calls for professional assistance from US Air Heating and Cooling.
  4. The pair of lights are flashing slowly. This indicates your heating system’s blower motor possibly isn’t working. This component moves warm air from the heating system into your residence. We can help in pinpointing what’s causing a problem with this part.
  5. An individual light is flashing slowly and the other is flashing fast. This means your heating system could have low voltage or a short circuit. Reach out to our specialists at 803-220-0761 for assistance.
  6. One light is flickering on, on, off while the other blinks on, off, on. This signifies there may be trouble with your heating system’s control board or wiring. US Air Heating and Cooling can find the problem and handle it.
  7. The duo of lights display every other slow flashes. This signifies your HVAC equipment may have a flame failure. There might be a problem with its gas supply, gas valve or ignitor control. Call us at 803-220-0761 for help.
  8. An individual light flashes slowly while the other stays continuous. This typically signifies your heater’s limit switch is experiencing an error. The switch stops your HVAC equipment from becoming too warm. Reach out to the professionals at US Air Heating and Cooling for help.

Heater Blower Operates But No Heat

Here’s what may be wrong when you notice your heater’s blower fan on, but you aren’t getting any warm air.

  • The duo of lights are showing every other rapid flickers. This means your furnace ignitor might not be working. This part kindles energy in your heating system to create warm air and should be fixed by a specialist from US Air Heating and Cooling.

Trust Us for Professional Furnace Repair

When you have to get your heater in working order without delay, trust the professionals at US Air Heating and Cooling. Our pros will take care of the issue without delay and have your space feeling relaxing again in no time. Contact us at 803-220-0761 or contact us online to schedule an appointment today.