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

Its control board has a set of LED lights that can display a fault code. Depending on the malfunction, your furnace may use solid or flashing lights.

Though there are certain basic HVAC adjustments you can do without an expert, many fixes are best handled by experts. When your heating system will not kick on or deliver warm air, get in touch with Rescue Heating & Air at 361-265-4371 for professional furnace repair in Alice.

Our specialists will quickly determine and repair the issue, even if you don’t have a Lennox heating system. We can repair any brands or makes—and get the heat returned to your residence fast.

What Does the Flashing Light on My Heater Mean?

Your heating system relies on lights to flash code when it is malfunctioning. It also works this setup to tell you it’s heating like it should.

Regular heating consists of:

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

If you notice a lone light going on and off slowly and the other blinking fast, your heating system might be having a low flame signal. This can take place even when your heating system is heating properly. It indicates the flame sensing rod may need to be cleaned or in the incorrect location on the burner. Call us at 361-265-4371 for support.

Here are several other of the most common issues for Lennox heaters.

Heater Will Not Kick On

Here are a few of the light patterns you could notice when your heating system will not or keep heating. The bulk of these errors must be fixed by a technician, like one from Rescue Heating & Air.

  1. The pair of LED lights are off. This signifies your heating system might not be receiving power. Go to the breaker box to ensure the heater fuse has not triggered. Try resetting the fuse if it is in the “off” position. If it immediately flips after you reset it, don’t touch the breaker and get in touch with us us at 361-265-4371.
  2. A single light is unchanging and the other is blinking slowly. This implies the flame rollout switch is likely not working right. The part is an essential safety device that assists in avoiding fires and carbon monoxide. You shouldn’t seek to fix this issue without professional help.
  3. A single light is flashing fast and the other is flashing slowly. This typically means power polarity has been inverted. Your heating system could have a wiring issue that requires expert support from Rescue Heating & Air.
  4. Both lights are blinking slowly. This indicates your furnace’s blower motor possibly isn’t working. This component sends hot air from the furnace into your house. We can help in determining what’s causing an issue with this piece.
  5. An individual light is flashing slowly and the other is blinking quickly. This indicates your heater could have insufficient voltage or a short circuit. Call our technicians at 361-265-4371 for help.
  6. One light is flickering on, on, off while the other blinks on, off, on. This indicates there might be an issue with your heating system’s motherboard or wiring. Rescue Heating & Air can find the problem and fix it.
  7. The pair of lights show alternate slow flashes. This means your HVAC system may have a flame failure. There may be an issue with its gas supply, gas valve or ignitor control. Get in touch with us at 361-265-4371 for assistance.
  8. A single light flickers slowly while the other remains solid. This usually means your heater’s limit switch is malfunctioning. The switch stops your heating system from overheating. Reach out to the pros at Rescue Heating & Air for support.

Heater Blower Operates But No Heat

Here’s what might be at fault when you hear your heater’s blower fan on, but you aren’t gaining any heated air.

  • The duo of lights display every other fast flickers. This indicates your furnace ignitor might not be working. This component lights fuel in your furnace to produce warm air and should be serviced by an expert from Rescue Heating & Air.

Turn to Us for Expert Furnace Repair

When you need to get your heater in working order fast, turn to the specialists at Rescue Heating & Air. Our pros will repair the issue right away and have your rooms feeling cozy again in a short time. Reach out to us at 361-265-4371 or contact us online to request an appointment now.