Fixing Error Code 223 on Your Lennox® Furnace

Getting chilly because you’re getting error code 223 from your Lennox® furnace?

This is telling you your furnace’s low pressure switch is open. Due to the malfunction, your system will not work for your protection.

Depend on the Experts at Service Experts Heating & Air Conditioning to take care of mending this furnace error. Our ACE-certified technicians are among the brightest in the industry when it comes to understanding and repairing furnace troubles.

Your satisfaction is essential to our team. That’s why we back our furnace repair* for a year.

How a Low Pressure Switch Works

Pressure switches are a necessary part of the heating process.

Here’s how your furnace works after the thermostat starts to call for heat:

  • Your furnace’s control board begins the draft inducer blower motor. This exhausts combustion gases from the heat exchanger and pulls in new gas and air so the burners can fire.
  • When the pressure switch senses that a suitable amount of air is being pulled into the burners, it closes and signals the control board to ignite the furnace.
  • Your furnace ignites and heats your space.

A two-stage furnace has more than one pressure switches, which permit it to run at various speeds—and use less energy.

What Happens When a Low Pressure Switch Fails

The low pressure switch may be open for several reasons.

There could be a:

  • Blocked vent
  • Plugged condensate drain
  • Cracked hose

There could also be trouble with the switch itself, the inducer or the circuit board.

Your furnace will tell you there’s something wrong with a red flash from its indicator light, which it uses to exhibit error codes. It has this red light to flash code, like Morse code.

You might see fast flashes or an alternating slow flash as it repeats a fault code.

Estimated Repair Cost for Furnace Error Code 223

The price to fix your furnace depends on the issue it has48} and the hours it takes to fix it.

Here are average replacement costs for several components that could be affected:

  • Pressure switch—$40 to $350
  • Inducer—$600 to $1,500
  • Circuit board—$200 to $600

Call the Experts at Service Experts Heating & Air Conditioning

When you need furnace service, you can trust the professionals at Service Experts Heating & Air Conditioning

to work on the fault code and get your heat moving again.

Call us at 954-736-4314 or schedule an appointment online today.

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