Clearing Error Code 223 on Your Lennox® Furnace

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

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

Trust the Experts at Service Experts Heating & Air Conditioning to deal with mending this furnace error. Our ACE-certified technicians are among the best in the industry when it comes to understanding and repairing furnace problems.

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

How a Low Pressure Switch Works

Pressure switches are an important part of the heating operation.

Here’s how your furnace acts after the thermostat begins to call for heat:

  • Your furnace’s control board begins the draft inducer blower motor. This gets rid of 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 dragged 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 a few pressure switches, which allow it to run at different speeds—and be more efficient.

What Happens When a Low Pressure Switch Fails

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

There could be a:

  • Obstructed vent
  • Clogged condensate drain
  • Cracked hose

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

Your furnace will let you know there’s a problem 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 reiterates a fault code.

Estimated Repair Cost for Furnace Error Code 223

The cost to fix your furnace depends on the issue it has48} and how long 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 Service Experts Heating & Air Conditioning

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

to take care of the fault code and get your heat flowing again.

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

Savings For You

See All Offers Here >
Offer

10% OFF FOR ACTIVE DUTY OR VETERANS

THANK YOU FOR YOUR SERVICE!

10% OFF Any Product or Service*
For all Active-Duty, Retired, and Veteran Military Personnel 

  • It’s our way of thanking you for your courage, dedication, and sacrifice to protect our freedom
  • All worked performed by licensed experts, and backed by a written, 100% Satisfaction Guarantee

Service Experts is proud to be affiliated with Military Makeover and Hiring Our Heroes

Excludes memberships and 1” disposable filters.
Offer not valid on prior purchases and may not be combined with other offers.

print
Offer

THREE LIMITED-TIME WAYS TO SAVE WITH AN ADVANTAGE PROGRAM BUNDLE

  • Bundle two HVAC systems through the Advantage Program and save $20 a month!
  • Bundle an HVAC and a Water Heater or Water Treatment System through the Advantage Program and save $15 a month!
  • Bundle a Water Heater a Water Treatment System or Indoor Air Quality through the Advantage Program and save $10 a month!

print

© 2024 Service Experts, Service Experts Heating & Air Conditioning, and the Service Experts logo and design are registered trademarks of Service Experts LLC and used under license by SE Canada Inc. All Rights Reserved. *Not applicable to the Advantage Program. See your signed Advantage Program Agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions.

Schedule Online

Chat with a Service Experts Professional
❌