Furnace troubleshooting

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

While your Lennox® heater can’t speak to you, it has a process to tell you about a furnace error.

Its control panel has double LED lights that can show a fault code. Subject to the issue, your heating system might use continuous or flashing lights.

Although there are a few simple heating adjustments you can complete on your own, most repairs are best left to HVAC technicians. When your heater won’t kick on or provide heat, reach out to Brookwood Inc at 641-316-9803 for skilled furnace repair in Newton.

Our specialists will swiftly determine and handle the malfunction, even if you don’t use a Lennox heating system. We can repair whichever kinds or models—and get the heat reintroduced to your residence fast.


What Does the Flickering Light on My Furnace Mean?

Your heating system relies on lights to flash code when it needs to be repaired. It also works these lights to relay it’s working like it should.

Normal function involves:

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

If you see a single light going on and off slowly and the other flashing rapidly, your furnace may be having a low flame signal. This can occur even when your heater is heating like it should. It indicates the flame sensing rod could be dirty or in the wrong spot on the burner. Call us at 641-316-9803 for support.

Here are some of the most routine issues for Lennox HVAC systems.

Furnace Won’t Start

Here are some of the light patterns you might see when your furnace won’t turn on or stay on. The majority of these errors must be fixed by a specialist, such as one from Brookwood Inc.

  1. The pair of LED lights aren’t lit. This signifies your heating system might not be receiving power. Find the breaker box to make sure the heating system fuse has not triggered. Try resetting the fuse if it’s in the “off” area. If it rapidly trips following a reset, leave the breaker alone and get in touch with us us at 641-316-9803.
  2. An individual light is stable and the other is blinking slowly. This shows the flame rollout switch is likely malfunctioning. The part is a critical safety device that aids in preventing fires and carbon monoxide. You shouldn’t seek to fix this fault on your own.
  3. One light is flashing rapidly and the other is flickering slowly. This likely signifies power polarity has been reversed. Your heating system might have a wiring error that requires specialized aid from Brookwood Inc.
  4. Both lights are blinking slowly. This indicates your heating system’s blower motor likely isn’t operating. This component sends warm air from the heating system into your space. We can aid in figuring out what’s wrong with this piece.
  5. A single light is flickering slowly and the other is flashing fast. This means your heating system might have not enough voltage or a short circuit. Contact our professionals at 641-316-9803 for help.
  6. One light is blinking on, on and off while the other flashes on, off, on. This signifies there may be a problem with your HVAC system’s control board or wiring. Brookwood Inc can determine the fault and handle it.
  7. The pair of lights are using alternate slow flickers. This signifies your furnace may have a flame failure. There might be a problem with its gas supply, gas valve or ignitor control. Get in touch with us at 641-316-9803 for help.
  8. One light flickers slowly while the other stays solid. This typically indicates your HVAC equipment’s limit switch is malfunctioning. The switch prevents your furnace from becoming too warm. Call the specialists at Brookwood Inc for support.

Heating System Blower Runs But No Heat

Here’s what may be broken when you notice your heating equipment’s blower fan working, but you aren’t gaining any warm air.

  • Both lights are giving every other fast flickers. This means your furnace ignitor may not be working. This component kindles gas in your HVAC equipment to produce heat and should be repaired by an expert from Brookwood Inc.

Trust Us for Expert Furnace Repair

When you have to have your HVAC equipment fixed fast, depend on the technicians at Brookwood Inc. Our technicians will handle the issue quickly and have your home feeling comfortable again in no time. Reach out to us at 641-316-9803 or contact us online to request an appointment right away.

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