Clearing Error Code 223 on Your Lennox® Furnace

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

This means your furnace’s low pressure switch is open. Due to the issue, your system will not function for your protection.

Turn to the Experts at Peachtree Service Experts Heating & Air Conditioning to handle repairing this furnace error. Our NATE-certified technicians are among the elite in the industry when it comes to recognizing and repairing furnace troubles.

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

How a Low Pressure Switch Works

Pressure switches are a necessary part of the heating system.

Here’s how your furnace acts after the thermostat initiates the 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 ignite.
  • When the pressure switch senses that a suitable amount of air is being brought into the burners, it closes and tells the control board to ignite the furnace.
  • Your furnace ignites and heats your home.

A two-stage furnace has a few pressure switches, which help it to run at different speeds—and use less energy.

What Happens When a Low Pressure Switch Fails

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

There could be a:

  • Blocked vent
  • Stopped condensate drain
  • Cracked hose

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

Your furnace will let you know there’s something wrong with a red flash from its indicator light, which it uses to display 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 cost to fix your furnace depends on the issue it has and how long it takes to remedy 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 Peachtree Service Experts Heating & Air Conditioning

When you need furnace service, you can trust the professionals at Peachtree Service Experts Heating & Air Conditioning to work on the fault code and get your heat moving again.

Call us at 678-235-9699 or schedule an appointment online today.