Furnace troubleshooting

Most Common Lennox® Furnace Error Codes (and What They Mean)

While your Lennox® heating system can’t speak to you, it does have a procedure to get your attention when there’s a furnace error.

Its motherboard has two LED lights that can display a fault code. Subject to the problem, your heater could show steady or flashing lights.

Although there are certain basic furnace fixes you can complete on your own, most fixes are best handled by HVAC technicians. When your heating system will not start or give heat, get in touch with Airmax Long Island Inc at 631-737-5566 for professional furnace repair in Suffolk/Nassau County.

Our experts will rapidly determine and handle the breakdown, even if you don’t have a Lennox heating system. We can repair any types or makes—and get the comfort restored to your home fast.


What Does the Flickering Light on My Heating System Mean?

Your heater depends on lights to flash code when it is malfunctioning. It also engages this setup to relay it’s running correctly.

Normal operation includes:

  • Concurrent slow flash—heater heating correctly.
  • Simultaneous fast flash—heating system is beginning to call for heat.

If you notice a solitary light going on and off slowly and the other going on and off fast, your heater may be having a low flame signal. This can happen even when your heater is operating properly. It indicates the flame sensing rod might be dirty or in the incorrect spot on the burner. Contact us at 631-737-5566 for support.

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

Heating System Will Not Kick On

Here are many of the light sequences you might notice when your heat refuses to or stay on. Most of these errors must be taken care of by a specialist, such as one from Airmax Long Island Inc.

  1. The pair of LED lights aren’t lit. This indicates your heater might not have power. Find the breaker box to confirm the furnace fuse has not flipped. Attempt to reset the fuse if it is in the “off” spot. If it immediately trips following a reset, leave the breaker alone and call us at 631-737-5566.
  2. One light is stable and the other is flashing slowly. This implies the flame rollout switch is may be not working right. The part is a critical safety mechanism that assists in avoiding fires and carbon monoxide. You shouldn’t attempt to take care of this malfunction on your own.
  3. A single light is blinking fast and the other is flickering slowly. This likely indicates power polarity has been inverted. Your furnace might have a wiring error that needs specialized help from Airmax Long Island Inc.
  4. The pair of lights are flashing slowly. This signifies your furnace’s blower motor likely isn’t working. This part distributes warm air from the heater into your home. We can aid in determining what’s causing an issue with this piece.
  5. An individual light is blinking slowly and the other is blinking rapidly. This signifies your heating system might have not enough voltage or a short circuit. Call our professionals at 631-737-5566 for assistance.
  6. One light is flickering on, on and off while the other blinks on, off, on. This indicates there may be a fault with your furnace’s control panel or wiring. Airmax Long Island Inc can locate the issue and handle it.
  7. The pair of lights show alternating slow flickers. This indicates your heating system likely has a flame error. There might be trouble with its gas supply, gas valve or ignitor control. Get in touch with us at 631-737-5566 for help.
  8. A single light flashes slowly while the other stays continuous. This often means your HVAC system’s limit switch is open. The switch keeps your furnace from overheating. Reach out to the professionals at Airmax Long Island Inc for support.

Furnace Blower Works But No Heat

Here’s what might be broken when you observe your furnace’s blower fan working, but you aren’t getting any warmth.

  • The pair of lights are giving every other rapid blinks. This signifies your furnace ignitor may not be in working order. This piece ignites gas in your furnace to produce heat and should be fixed by a technician from Airmax Long Island Inc.

Trust Us for Skilled Furnace Repair

When you have to have your furnace in working order quickly, depend on the experts at Airmax Long Island Inc. Our pros will repair the issue promptly and have your house feeling relaxing again in a short time. Reach out to us at 631-737-5566 or contact us online to schedule an appointment now.

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