Fixing Error Code 223 on Your Lennox® Furnace

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

This indicates your furnace’s low pressure switch is open. Due to the issue, your system will not work for your safety.

Depend on the Experts at Calverley Service Experts to handle mending this furnace error. Our NATE-certified technicians are among the elite in the industry when it comes to diagnosing and repairing furnace problems.

Your satisfaction is important to our business. That’s why we back our furnace repair work in Fort Worth with a 100% Satisfaction Guarantee* for a year.

How a Low Pressure Switch Works

Pressure switches are an important part of the heating system.

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

  • Your furnace’s control board begins the draft inducer blower motor. This pushes out combustion gases from the heat exchanger and sucks in new gas and air so the burners can start.
  • When the pressure switch senses that enough air is being pulled into the burners, it closes and signals the control board to ignite the furnace.
  • Your furnace ignites and heats your home.

A two-stage furnace has a few pressure switches, which allow it to run at various speeds—and use energy more efficiently.

What Happens When a Low Pressure Switch Fails

The low pressure switch may be open for a variety reasons.

There could be a:

  • Obstructed vent
  • Plugged condensate drain
  • Cracked hose

There could also be a problem 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 feature error codes. It has this red light to flash code, like Morse code.

You might notice fast flashes or an alternating slow flash as it replays a fault code.

Estimated Repair Cost for Furnace Error Code 223

The price to fix your furnace depends on the issue it has and the time it takes to remedy it.

Here are the usual 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 Calverley Service Experts

When you require furnace service, you can call on the professionals at Calverley Service Experts to handle the fault code and get your heat working again.

Call us at 817-380-5647 or schedule an appointment online today.