While your Lennox® furnace cannot speak to you, it does have a method to tell you about a furnace error.

Its control panel has twin LED lights that can show a fault code. Based on the issue, your heater might use solid or flashing lights.

Though there are some simple heating repairs you can complete on your own, most fixes are best taken care of by experts. When your furnace refuses to turn on or provide heated air, get in touch with Contra Costa Heating & AC at 510-343-9841 for expert furnace repair in The Bay Area.

Our experts will speedily identify and repair the issue, even if you don’t have a Lennox heating system. We can fix whichever types or models—and get the heat reintroduced to your home without delay.

What Does the Blinking Light on My Heating System Mean?

Your heating system uses lights to flash code when it isn’t working right. It also uses this system to relay it’s operating like it should.

Regular operation consists of:

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

If you realize that a lone light blinking slowly and the other flashing fast, your furnace may have a low flame signal. This can happen even when your furnace is heating like it should. It indicates the flame sensing rod may be dirty or in the wrong spot on the burner. Contact us at 510-343-9841 for support.

Here are a few other of the most routine faults for Lennox HVAC systems.

Heating System Won’t Kick On

Here are some of the light sequences you may notice when your heat won’t turn on or keep running. The majority of these problems have to be fixed by a technician, like one from Contra Costa Heating & AC.

  1. The pair of LED lights aren’t lit. This signifies your HVAC system might not have power. Look at the breaker box to ensure the furnace fuse is not tripped. Attempt to reset the fuse if it is in the “off” position. If it rapidly trips after you reset it, don’t touch the breaker and call us at 510-343-9841.
  2. A single light is continuous and the other is flickering slowly. This shows the flame rollout switch is may be open. The component is an essential safety device that helps in preventing fires and carbon monoxide. You shouldn’t try to take care of this issue yourself.
  3. A single light is flashing fast and the other is flickering slowly. This typically means power polarity has been reversed. Your heating system might have a wiring issue that requires professional aid from Contra Costa Heating & AC.
  4. The pair of lights are blinking slowly. This signifies your furnace’s blower motor probably isn’t running. This component circulates heated air from the furnace into your space. We can assist in determining what’s wrong with this component.
  5. One light is flashing slowly and the other is blinking fast. This means your heating system could have insufficient voltage or a short circuit. Contact our technicians at 510-343-9841 for support.
  6. One light is flashing on, on, off while the other flickers on, off, on. This signifies there could be trouble with your heater’s motherboard or wiring. Contra Costa Heating & AC can locate the problem and handle it.
  7. Both lights show alternate slow blinks. This means your heating system may have a flame issue. There may be a problem with its gas supply, gas valve or ignitor control. Reach out to us at 510-343-9841 for assistance.
  8. A single light blinks slowly while the other stays solid. This usually indicates your HVAC system’s limit switch is experiencing an error. The switch stops your heating system from getting too hot. Get in touch with the specialists at Contra Costa Heating & AC for assistance.

Heating System Blower Works But No Warmth

Here’s what could be wrong when you hear your heating equipment’s blower fan running, but you aren’t receiving any heated air.

  • The pair of lights are giving alternate fast flickers. This indicates your furnace ignitor may not be working. This part lights energy in your heater to create warm air and should be repaired by an expert from Contra Costa Heating & AC.

Depend on Us for Skilled Furnace Repair

When you have to have your heater in working order fast, depend on the professionals at Contra Costa Heating & AC. Our technicians will handle the fault quickly and have your house feeling cozy again in a short time. Get in touch with us at 510-343-9841 or contact us online to request an appointment now.