Furnace troubleshooting

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

While your Lennox® heater isn’t able to chat with you, it possesses a way to tell you about a furnace error.

Its motherboard has two LED lights that can show a fault code. Depending on the issue, your heater may display steady or flashing lights.

While there are certain basic heating repairs you can take care of yourself, the majority of services are best handled by HVAC technicians. When your heater refuses to start or give warm air, get in touch with Patterson & Stirling Inc at 814-308-0416 for professional furnace repair in Erie.

Our experts will rapidly determine and fix the issue, even if you don’t have a Lennox heater. We can repair all brands or configuration—and get the heat reintroduced to your residence without delay.


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 engages this system to relay it’s working correctly.

Normal heating includes:

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

If you realize that a single light going on and off slowly and the other blinking rapidly, your heater might be experiencing a low flame signal. This can occur even when your heating system is running correctly. It signifies the flame sensing rod could need to be cleaned or in the wrong area on the burner. Contact us at 814-308-0416 for help.

Here are several other of the most typical faults for Lennox HVAC systems.

Furnace Won’t Kick On

Here are a few of the light arrangements you may see when your furnace won’t turn on or stay on. Most of these issues must be repaired by an expert, such as one from Patterson & Stirling Inc.

  1. All LED lights aren’t lit. This signifies your HVAC system might not have electricity. Examine the breaker box to make sure the furnace fuse has not tripped. You should reset the fuse if it’s in the “off” spot. If it instantly turns off after you reset it, leave the breaker alone and get in touch with us us at 814-308-0416.
  2. One light is continuous and the other is flashing slowly. This means the flame rollout switch is likely malfunctioning. The switch is an essential safety tool that assists in preventing fires and carbon monoxide. You shouldn’t seek to repair this issue yourself.
  3. An individual light is flickering rapidly and the other is flickering slowly. This typically indicates power polarity has been transposed. Your heating system could have a wiring fault that requires professional aid from Patterson & Stirling Inc.
  4. All lights are blinking slowly. This signifies your heating system’s blower motor probably isn’t operating. This component distributes warm air from the furnace into your residence. We can help in pinpointing what’s wrong with this component.
  5. One light is flickering slowly and the other is flickering rapidly. This indicates your heating system may have insufficient voltage or a short circuit. Get in touch with our professionals at 814-308-0416 for assistance.
  6. One light is flickering on, on and off while the other blinks on, off, on. This signifies there may be an issue with your heating system’s control panel or wiring. Patterson & Stirling Inc can find the problem and fix it.
  7. The duo of lights are using alternate slow blinks. This signifies your heating system likely has a flame issue. There might be trouble with its gas supply, gas valve or ignitor control. Get in touch with us at 814-308-0416 for support.
  8. One light blinks slowly while the other stays solid. This often indicates your heating system’s limit switch is malfunctioning. The switch prevents your HVAC equipment from becoming too warm. Get in touch with the specialists at Patterson & Stirling Inc for support.

Heating System Blower Works But No Warm Air

Here’s what might be wrong when you hear your heating equipment’s blower fan on, but you aren’t receiving any warmth.

  • The pair of lights are showing alternate fast flickers. This signifies your furnace ignitor might be broken. This part lights energy in your furnace to create heat and should be serviced by a specialist from Patterson & Stirling Inc.

Trust Us for Professional Furnace Repair

When you have to have your HVAC equipment in working order quickly, turn to the technicians at Patterson & Stirling Inc. Our technicians will repair the problem quickly and have your space feeling relaxing again in no time. Call us at 814-308-0416 or contact us online to request an appointment now.

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