While your Lennox® furnace isn’t able to talk to you, it has a method to tell you about a furnace error.

Its control board has a set of LED lights that can show a fault code. Based on the fault, your heating system may use steady or flashing lights.

Although there are certain elementary HVAC repairs you can take care of yourself, most repairs are best left to HVAC technicians. When your heating system refuses to kick on or deliver heated air, reach out to Enertek Air Conditioning & Heating at (818) 727-9993 for skilled furnace repair in Northridge.

Our experts will speedily determine and handle the breakdown, even if you don’t use a Lennox heater. We can fix whichever kinds or models—and get the comfort returned to your residence fast.

What Does the Flickering Light on My Heating System Mean?

Your heating system relies on lights to flash code when it is malfunctioning. It also works this setup to let you know it’s heating like it should.

Correct operation includes:

  • Simultaneous slow flash—heater working like it should.
  • Simultaneous fast flash—heater is beginning to call for heat.

If you realize that a single light going on and off slowly and the other blinking rapidly, your heater may be experiencing a low flame signal. This can occur even when your furnace is heating correctly. It signifies the flame sensing rod might be dirty or in the incorrect location on the burner. Contact us at (818) 727-9993 for support.

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

Furnace Will Not Turn On

Here are some of the light sequences you may observe when your heater will not or keep heating. The bulk of these problems must be taken care of by a professional, for instance from Enertek Air Conditioning & Heating.

  1. The duo of LED lights are off. This signifies your heater might not be receiving power. Look at the breaker box to confirm the heating system fuse hasn’t tripped. Attempt to reset the fuse if it is in the “off” position. If it promptly trips after you reset it, don’t try to reset it again and call us at (818) 727-9993.
  2. A single light is unchanging and the other is flickering slowly. This shows the flame rollout switch is likely not working right. The switch is an essential safety mechanism that assists in stopping fires and carbon monoxide. You shouldn’t attempt to repair this fault without professional help.
  3. An individual light is blinking rapidly and the other is blinking slowly. This likely signifies power polarity has been reversed. Your heater could have a wiring error that calls for specialized assistance from Enertek Air Conditioning & Heating.
  4. The duo of lights are flashing slowly. This means your heating system’s blower motor likely isn’t working. This piece sends hot air from the furnace into your house. We can aid in pinpointing what’s causing an issue with this piece.
  5. A single light is flickering slowly and the other is flickering rapidly. This signifies your heating system could have insufficient voltage or a short circuit. Get in touch with our experts at (818) 727-9993 for support.
  6. One light is flickering on, on, off while the other flashes on, off, on. This means there could be a fault with your heater’s control board or wiring. Enertek Air Conditioning & Heating can find the problem and handle it.
  7. The pair of lights show alternate slow flickers. This indicates your HVAC system may have a flame issue. There might be a problem with its gas supply, gas valve or ignitor control. Contact us at (818) 727-9993 for help.
  8. An individual light blinks slowly while the other is solid. This often means your heater’s limit switch is not working. The switch prevents your heater from becoming too warm. Call the professionals at Enertek Air Conditioning & Heating for help.

Furnace Blower Operates But No Warmth

Here’s what might be wrong when you observe your heating system’s blower fan running, but you aren’t gaining any heated air.

  • Both lights are giving alternate fast flickers. This signifies your furnace ignitor could not be in working order. This part ignites gas in your heating system to create warmth and should be repaired by a technician from Enertek Air Conditioning & Heating.

Turn to Us for Professional Furnace Repair

When you need to get your heating system fixed fast, turn to the technicians at Enertek Air Conditioning & Heating. Our technicians will take care of the issue quickly and have your house feeling cozy again soon. Contact us at (818) 727-9993 or contact us online to schedule an appointment right away.