Why is my Lennox furnace not heating?

Most likely, either the electrical system providing your furnace’s power has shorted or the power switch has blown. Try resetting your furnace’s circuit breaker. If it has blown, you will need to replace it. The furnace’s igniter might either be cracked or faulty.

How do I reset my Lennox heater?

Examine your furnace and look for a raised button or switch to the right of the ignition control box (or the “Limit Control” switch). Press and release the limit control switch to rest your Lennox furnace.

What would cause my heat not to kick on?

Your furnace may not come on sometimes due to the following reasons: Your thermostat is set incorrectly. Your air filter is clogged or dirty. Your pilot light is out.

How do you fix a furnace that is not heating?

Furnace Troubleshooting Steps

  1. Open the Heat Registers.
  2. Check Settings and Clean the Thermostat.
  3. Check the Furnace Power.
  4. Reset the Furnace.
  5. Check the Service Door.
  6. Inspect and Change the Filter.
  7. Check the Standing Pilot.
  8. Clean the Flame Sensor.

Does a Lennox furnace have a reset button?

Lift up the blower compartment cover to access the blower wheel and blower motor. Look for a small red or yellow button on the side of the blower motor. Press the reset button down if it has popped up.

What do I do if my heat isn’t kicking on?

Thermostat. If your furnace is not kicking on, it can be an issue with the thermostat. You should first make sure that the thermostat is switched to the heating function. Next, make sure that the temperature that you have the thermostat set on is lower than the temperature in the home.

What to do if your Lennox Furnace is not heating?

Common solutions for: Lennox Furnace not heating. 01 – Igniter. The igniter gets very hot and glows bright orange to light the gas burner. If the igniter fails or cracks, the furnace won’t heat. To determine if the igniter is faulty, remove the igniter and inspect it for cracks. If the igniter is cracked, replace it. If the igniter is not

What do the LEDs on a Lennox Furnace mean?

Lennox furnaces are equipped with two LED lights that will flash in different patterns to help you diagnose various problems. If both LEDs are flashing together slowly, it means the furnace is operating normally. If both are flashing together quickly, it means the operation is normal, and there’s been a call for heat.

How long is the warranty on a Lennox Furnace?

All Lennox furnaces come with parts and heat exchanger warranty, and the model of your furnace will determine how long the warranty lasts. Dave Lennox Signature Collection series: Furnaces in this series have a 10-year warranty on covered components and a 20-year warranty on the heat exchanger.

Where is the control panel on a Lennox Furnace?

The control panel could be located on the bottom panel on downflow furnaces or the top panel on upflow models. Once you find the control panel, lift the panel up and away from the appliance — you can set this aside for now.

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