While your Lennox® heater isn’t able to speak to you, it possesses a procedure to tell you about a furnace error.

Its control board has a set of LED lights that can display a fault code. Based on the issue, your furnace could display continuous or flashing lights.

Though there are some simple HVAC fixes you can take care of without an expert, most services are best handled by the professionals. When your heating system won’t turn on or deliver warmth, call Olde Towne Heating & Air at 843-485-0967 for experienced furnace repair in Mount Pleasant.

Our technicians will rapidly detect and take care of the problem, even if you don’t own a Lennox heater. We can repair whichever brands or models—and get the comfort reintroduced to your home fast.

What Does the Blinking Light on My Heating System Mean?

Your heating system relies on lights to flash code when it isn’t working right. It also uses this system to let you know it’s heating like it should.

Regular heating consists of:

  • Simultaneous slow flash—heating system working like it should.
  • Concurrent fast flash—heater is beginning to call for heat.

If you see a single light going on and off slowly and the other flashing fast, your heater may have a low flame signal. This can take place even when your furnace is heating properly. It means the flame sensing rod might have buildup or in the wrong spot on the burner. Call us at 843-485-0967 for support.

Here are some of the most routine errors for Lennox heaters.

Heater Will Not Turn On

Here are some of the light arrangements you could notice when your heating system will not or keep operating. The majority of these errors must be fixed by an expert, like one from Olde Towne Heating & Air.

  1. The duo of LED lights are extinguished. This signifies your HVAC system might not have power. Find the breaker box to make sure the furnace fuse is not flipped. You should reset the fuse if it’s in the “off” spot. If it rapidly flips following a reset, don’t try to reset it again and get in touch with us us at 843-485-0967.
  2. One light is stable and the other is flashing slowly. This signifies the flame rollout switch is possibly not working right. The component is a critical safety mechanism that helps in avoiding fires and carbon monoxide. You shouldn’t seek to fix this issue without professional help.
  3. One light is flickering fast and the other is blinking slowly. This typically means power polarity has been inverted. Your furnace may have a wiring fault that needs professional help from Olde Towne Heating & Air.
  4. The pair of lights are blinking slowly. This signifies your heater’s blower motor likely isn’t working. This piece moves hot air from the furnace into your home. We can assist in pinpointing what’s wrong with this component.
  5. A single light is flickering slowly and the other is flickering quickly. This signifies your heating system might have not enough voltage or a short circuit. Get in touch with our experts at 843-485-0967 for help.
  6. One light is flickering on, on, off while the other flickers on, off, on. This indicates there might be an issue with your heating system’s control panel or wiring. Olde Towne Heating & Air can find the issue and handle it.
  7. Both lights display alternate slow flickers. This means your heater possibly has a flame problem. There may be a problem with its gas supply, gas valve or ignitor control. Call us at 843-485-0967 for support.
  8. An individual light flashes slowly while the other remains solid. This typically indicates your HVAC equipment’s limit switch is not working. The switch stops your heating system from getting too hot. Get in touch with the experts at Olde Towne Heating & Air for support.

Heating System Blower Operates But No Warmth

Here’s what may be wrong when you hear your heating equipment’s blower fan running, but you aren’t receiving any warm air.

  • The pair of lights are giving every other rapid flashes. This means your furnace ignitor could be broken. This component ignites energy in your furnace to make warmth and should be fixed by a specialist from Olde Towne Heating & Air.

Turn to Us for Expert Furnace Repair

When you need to get your heating system in working order fast, depend on the specialists at Olde Towne Heating & Air. Our pros will handle the issue without delay and have your space feeling cozy again in no time. Contact us at 843-485-0967 or contact us online to schedule an appointment today.