Getting cold because you’re getting error code 223 from your Lennox® furnace?
This indicates your furnace’s low pressure switch is open. Due to the failure, your system will not work for your safety.
Trust the Experts at Norrell Service Experts to deal with fixing this furnace error. Our ACE-certified technicians are among the brightest in the industry when it comes to recognizing and repairing furnace problems.
Your satisfaction is important to us. 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 system.
Here’s how your furnace acts after the thermostat starts 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 sucks in new gas and air so the burners can fire.
- When the pressure switch senses that enough air is being pulled into the burners, it closes and triggers the control board to ignite the furnace.
- Your furnace ignites and heats your house.
A two-stage furnace has a few pressure switches, which permit it to run at various speeds—and use less energy.
What Happens When a Low Pressure Switch Acts Up
The low pressure switch may be open for several reasons.
There could be a:
- Blocked vent
- Clogged 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 an issue 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 observe fast flashes or an alternating slow flash as it replays a fault code.
Estimated Repair Cost for Furnace Error Code 223
The expense to fix your furnace depends on the issue it has and the hours it takes to remedy it.
Here are expected 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 Norrell Service Experts
When you have to have furnace service, you can call on the professionals at Norrell Service Experts to handle the fault code and get your heat working again.
Call us at 205-267-0023 or schedule an appointment online today.