While your Lennox® heater isn’t able to chat with you, it does have a procedure to get your attention when there’s a furnace error.

Its control board has twin LED lights that can share a fault code. Depending on the malfunction, your heating system may display solid or flashing lights.

While there are a few simple heating adjustments you can finish yourself, most repairs are best left to HVAC technicians. When your heater refuses to turn on or put out warm air, reach out to Pliescott HVAC Services LLC at 410-228-4822 for expert furnace repair in Cambridge.

Our technicians will rapidly determine and fix the problem, even if you don’t own a Lennox heater. We can service whichever kinds or models—and get the comfort returned to your residence quickly.

What Does the Blinking Light on My Heating System Mean?

Your furnace relies on lights to flash code when it is malfunctioning. It also uses this system to relay it’s heating correctly.

Regular function includes:

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

If you notice a single light going on and off slowly and the other going on and off fast, your heater might be experiencing a low flame signal. This can take place even when your furnace is working like it should. It indicates the flame sensing rod may need to be cleaned or in the incorrect area on the burner. Call us at 410-228-4822 for assistance.

Here are some of the most typical issues for Lennox heaters.

Heating System Refuses to Start

Here are many of the light sequences you may observe when your heating system will not or keep heating. The bulk of these problems must be fixed by a technician, for instance from Pliescott HVAC Services LLC.

  1. Both LED lights aren’t lit. This indicates your HVAC system might not be receiving power. Go to the breaker box to ensure the furnace fuse has not tripped. Attempt to reset the fuse if it’s in the “off” position. If it promptly trips after a subsequent reset, don’t try to reset it again and get in touch with us us at 410-228-4822.
  2. A single light is unchanging and the other is blinking slowly. This implies the flame rollout switch is possibly not working right. The component is an essential safety guard that assists in preventing fires and carbon monoxide. You shouldn’t seek to repair this problem on your own.
  3. A single light is flashing fast and the other is flickering slowly. This often means power polarity has been inverted. Your heating system may have a wiring fault that needs expert aid from Pliescott HVAC Services LLC.
  4. Both lights are blinking slowly. This means your heating system’s blower motor probably isn’t operating. This part moves heated air from the HVAC system into your rooms. We can help in pinpointing what’s wrong with this piece.
  5. An individual light is flashing slowly and the other is flashing fast. This means your heating system may have low voltage or a short circuit. Call our experts at 410-228-4822 for help.
  6. One light is flashing on, on, off while the other flashes on, off, on. This signifies there might be an issue with your heating system’s motherboard or wiring. Pliescott HVAC Services LLC can pinpoint the problem and handle it.
  7. Both lights display alternating slow blinks. This signifies your heater likely has a flame issue. There could be an issue with its gas supply, gas valve or ignitor control. Contact us at 410-228-4822 for assistance.
  8. A single light flickers slowly while the other remains steady. This typically signifies your heating system’s limit switch is experiencing an error. The switch prevents your HVAC system from getting too hot. Reach out to the specialists at Pliescott HVAC Services LLC for assistance.

Heater Blower Operates But No Warmth

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

  • The pair of lights are showing alternate fast flashes. This indicates your furnace ignitor might not be working. This part kindles gas in your heating system to produce warm air and should be fixed by an expert from Pliescott HVAC Services LLC.

Trust Us for Professional Furnace Repair

When you need to have your HVAC equipment repaired without delay, depend on the specialists at Pliescott HVAC Services LLC. Our technicians will handle the issue without delay and have your rooms feeling relaxing again soon. Reach out to us at 410-228-4822 or contact us online to get an appointment today.