While your Lennox® heater cannot chat with you, it possesses a process to get your attention when there’s a furnace error.

Its control panel has double LED lights that can show a fault code. Depending on the malfunction, your heater could display continuous or flashing lights.

While there are some elementary heating fixes you can take care of without an expert, most fixes are best taken care of by HVAC technicians. When your furnace refuses to turn on or deliver warmth, contact Woody's Sudden Service at 703-278-2036 for expert furnace repair in Manassas.

Our experts will swiftly identify and repair the issue, even if you don’t have a Lennox heating system. We can fix whichever kinds or configuration—and get the comfort returned to your residence without delay.

What Does the Blinking Light on My Heating System Mean?

Your heater depends on lights to flash code when it isn’t working right. It also engages this system to let you know it’s heating like it should.

Regular operation consists of:

  • Concurrent slow flash—furnace working like it should.
  • Simultaneous fast flash—heating system is beginning to call for heat.

If you notice a lone light flashing slowly and the other going on and off rapidly, your heating system might be having a low flame signal. This can happen even when your furnace is operating like it should. It indicates the flame sensing rod might be dirty or in the wrong area on the burner. Contact us at 703-278-2036 for help.

Here are several other of the most common issues for Lennox heaters.

Heating System Refuses to Start

Here are many of the light sequences you could observe when your furnace won’t turn on or keep heating. The bulk of these errors must be handled by an expert, for instance from Woody's Sudden Service.

  1. The duo of LED lights aren’t lit. This indicates your heater might not be receiving power. Go to the breaker box to make sure the heater fuse is not tripped. Try resetting the fuse if it is in the “off” spot. If it rapidly trips after a subsequent reset, don’t try to reset it again and call us at 703-278-2036.
  2. An individual light is stable and the other is flickering slowly. This shows the flame rollout switch is possibly open. The component is an essential safety tool that assists in preventing fires and carbon monoxide. You shouldn’t seek to take care of this fault on your own.
  3. An individual light is flashing rapidly and the other is flashing slowly. This typically indicates power polarity has been transposed. Your heating system may have a wiring problem that calls for expert assistance from Woody's Sudden Service.
  4. All lights are flashing slowly. This indicates your heater’s blower motor likely isn’t working. This piece sends hot air from the heater into your house. We can help in determining what’s wrong with this piece.
  5. One light is blinking slowly and the other is flashing rapidly. This signifies your heater could have not enough voltage or a short circuit. Call our specialists at 703-278-2036 for assistance.
  6. One light is flashing on, on, off while the other flashes on, off, on. This signifies there may be trouble with your HVAC system’s control panel or wiring. Woody's Sudden Service can find the problem and take care of it.
  7. Both lights display alternating slow blinks. This indicates your heater possibly has a flame failure. There may be an issue with its gas supply, gas valve or ignitor control. Call us at 703-278-2036 for help.
  8. An individual light flashes slowly while the other stays solid. This usually signifies your HVAC system’s limit switch is experiencing an error. The switch prevents your HVAC equipment from becoming too warm. Call the experts at Woody's Sudden Service for assistance.

Heater Blower Works But No Warmth

Here’s what may be at fault when you notice your heating equipment’s blower fan running, but you aren’t gaining any warmth.

  • The duo of lights are giving every other quick blinks. This signifies your furnace ignitor may not be in working order. This piece ignites gas in your heater to produce heat and should be serviced by a technician from Woody's Sudden Service.

Depend on Us for Skilled Furnace Repair

When you need to have your HVAC equipment fixed without delay, depend on the experts at Woody's Sudden Service. Our techs will handle the error without delay and have your rooms feeling cozy again in no time. Get in touch with us at 703-278-2036 or contact us online to get an appointment right away.