While your Lennox® heating system cannot chat with you, it possesses a process to get your attention when there’s a furnace error.

Its motherboard has a set of LED lights that can share a fault code. Subject to the malfunction, your heating system could display continuous or flashing lights.

Though there are certain simple heating adjustments you can complete without an expert, the majority of tasks are best taken care of by the professionals. When your heating system refuses to kick on or provide warmth, get in touch with Fletcher Plumbing, Heating & AC at 302-653-0503 for skilled furnace repair in Smyrna.

Our specialists will quickly identify and repair the malfunction, even if you don’t own a Lennox heating system. We can fix any brands or models—and get the heat reintroduced to your home without delay.

What Does the Flickering Light on My Heater Mean?

Your furnace uses lights to flash code when it requires repairs. It also engages these lights to tell you it’s working properly.

Normal function involves:

  • Simultaneous slow flash—heating system running correctly.
  • Both lights flash fast—heating system is beginning to call for heat.

If you realize that a single light blinking slowly and the other flashing rapidly, your heater could have a low flame signal. This can happen even when your furnace is running correctly. It means the flame sensing rod may have buildup or in the wrong spot on the burner. Call us at 302-653-0503 for support.

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

Heating System Will Not Turn On

Here are some of the light sequences you may notice when your furnace won’t turn on or keep running. Most of these issues have to be taken care of by a technician, such as one from Fletcher Plumbing, Heating & AC.

  1. The duo of LED lights aren’t lit. This signifies your heater might not be receiving power. Find the breaker box to confirm the heating system fuse is not tripped. Attempt to reset the fuse if it’s in the “off” spot. If it immediately flips following a reset, don’t touch the breaker and call us at 302-653-0503.
  2. One light is unchanging and the other is blinking slowly. This shows the flame rollout switch is likely not working right. The component is a critical safety device that helps in avoiding fires and carbon monoxide. You shouldn’t attempt to handle this issue without professional help.
  3. An individual light is flashing fast and the other is blinking slowly. This likely signifies power polarity has been inverted. Your furnace could have a wiring fault that calls for professional assistance from Fletcher Plumbing, Heating & AC.
  4. All lights are flickering slowly. This indicates your furnace’s blower motor possibly isn’t operating. This component distributes hot air from the heating system into your rooms. We can help in figuring out what’s wrong with this part.
  5. An individual light is flickering slowly and the other is flickering fast. This signifies your heating system could have not enough voltage or a short circuit. Reach out to our specialists at 302-653-0503 for assistance.
  6. One light is flashing on, on, off while the other flashes on, off, on. This means there might be an issue with your HVAC system’s control board or wiring. Fletcher Plumbing, Heating & AC can locate the issue and take care of it.
  7. The pair of lights are using alternate slow flashes. This means your heating system likely has a flame issue. There could be a problem with its gas supply, gas valve or ignitor control. Contact us at 302-653-0503 for assistance.
  8. A single light flashes slowly while the other stays steady. This typically means your heating system’s limit switch is not working. The switch prevents your HVAC system from overheating. Reach out to the pros at Fletcher Plumbing, Heating & AC for support.

Furnace Blower Operates But No Warm Air

Here’s what could be at fault when you notice your heating system’s blower fan working, but you aren’t receiving any warmth.

  • The duo of lights display alternate fast flickers. This means your furnace ignitor could not be working. This component kindles energy in your heater to make warm air and should be fixed by an expert from Fletcher Plumbing, Heating & AC.

Depend on Us for Skilled Furnace Repair

When you have to have your heater fixed quickly, trust the experts at Fletcher Plumbing, Heating & AC. Our pros will take care of the issue without delay and have your house feeling comfortable again in no time. Reach out to us at 302-653-0503 or contact us online to request an appointment right away.