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

Its control board has a set of LED lights that can share a fault code. Depending on the fault, your furnace might display steady or flashing lights.

Although there are various simple heating repairs you can finish on your own, most fixes are best handled by experts. When your heater will not start or give heat, contact Herman Allen Plumbing, Heating & Cooling at 804-302-6657 for experienced furnace repair in Greater Richmond.

Our technicians will quickly identify and take care of the issue, even if you don’t own a Lennox heater. We can repair whichever brands or models—and get the comfort returned to your residence without delay.

What Does the Flashing Light on My Furnace Mean?

Your heater uses lights to flash code when it requires repairs. It also uses this system to relay it’s heating correctly.

Normal heating consists of:

  • Simultaneous slow flash—furnace working properly.
  • Simultaneous fast flash—heating system is initiating the call for heat.

If you notice a single light flashing slowly and the other flashing rapidly, your heater may be experiencing a low flame signal. This can happen even when your heater is heating correctly. It indicates the flame sensing rod might have buildup or in the wrong spot on the burner. Call us at 804-302-6657 for assistance.

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

Heater Refuses to Kick On

Here are a few of the light sequences you could see when your heating system refuses to or keep heating. The majority of these errors have to be repaired by a specialist, such as one from Herman Allen Plumbing, Heating & Cooling.

  1. Both LED lights are off. This signifies your heater might not have power. Find the breaker box to make sure the furnace fuse isn’t triggered. Try resetting the fuse if it is in the “off” spot. If it rapidly trips after you reset it, don’t try to reset it again and call us at 804-302-6657.
  2. One light is stable and the other is flickering slowly. This signifies the flame rollout switch is likely open. The part is an essential safety tool that assists in avoiding fires and carbon monoxide. You shouldn’t attempt to fix this problem without professional help.
  3. One light is flickering fast and the other is blinking slowly. This likely means power polarity has been reversed. Your furnace could have a wiring issue that calls for expert aid from Herman Allen Plumbing, Heating & Cooling.
  4. Both lights are flickering slowly. This signifies your heater’s blower motor probably isn’t operating. This component sends heated air from the furnace into your space. We can assist in figuring out what’s wrong with this component.
  5. One light is flickering slowly and the other is blinking fast. This means your heater might have low voltage or a short circuit. Get in touch with our technicians at 804-302-6657 for support.
  6. One light is blinking on, on, off while the other flashes on, off, on. This indicates there could be trouble with your heater’s motherboard or wiring. Herman Allen Plumbing, Heating & Cooling can locate the fault and fix it.
  7. The duo of lights show every other slow flickers. This means your HVAC equipment may have a flame issue. There might be trouble with its gas supply, gas valve or ignitor control. Reach out to us at 804-302-6657 for assistance.
  8. An individual light blinks slowly while the other stays steady. This typically indicates your HVAC equipment’s limit switch is malfunctioning. The switch prevents your HVAC equipment from getting too hot. Call the experts at Herman Allen Plumbing, Heating & Cooling for assistance.

Heating System Blower Runs But No Warmth

Here’s what might be broken when you hear your heater’s blower fan running, but you aren’t getting any warmth.

  • Both lights are giving alternate quick flashes. This signifies your furnace ignitor might not be working. This component kindles energy in your HVAC equipment to create heat and should be repaired by an expert from Herman Allen Plumbing, Heating & Cooling.

Depend on Us for Expert Furnace Repair

When you need to have your heating system fixed without delay, depend on the experts at Herman Allen Plumbing, Heating & Cooling. Our technicians will fix the issue right away and have your space feeling cozy again in a short time. Contact us at 804-302-6657 or contact us online to request an appointment today.