Feeling a chill because you’re seeing error code 223 from your Lennox® furnace?
This means your furnace’s low pressure switch is open. Due to the malfunction, your system will not work for safety reasons.
Depend on the Experts at Roland J. Down Service Experts to take care of mending 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 essential to us. 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 acts 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 tells the control board to ignite the furnace.
- Your furnace ignites and heats your house.
A two-stage furnace has several pressure switches, which allow it to run at multiple 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:
- Blocked vent
- Stopped condensate drain
- Cracked hose
There could also be a problem with the switch itself, the inducer or the circuit board.
Your furnace will show you 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 notice fast flashes or an alternating slow flash as it reiterates a fault code.
Estimated Repair Cost for Furnace Error Code 223
The price to fix your furnace depends on what’s wrong with it and the hours it takes to repair 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 Roland J. Down Service Experts
When you have to have furnace service, you can lean on the professionals at Roland J. Down Service Experts to work on the fault code and get your heat flowing again.
Call us at 518-417-2938 or schedule an appointment online today.