Getting chilly 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 run for your protection.
Turn to the Experts at Service Experts Heating & Air Conditioning to handle fixing this furnace error. Our ACE-certified technicians are among the brightest in the industry when it comes to recognizing and repairing furnace issues.
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 an essential part of the heating operation.
Here’s how your furnace works 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 brings in new gas and air so the burners can ignite.
- 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 house.
A two-stage furnace has several 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 several reasons.
There could be a:
- Blocked 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 tell you there’s a problem 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 observe 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 the issue it has and the hours it takes to fix 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 Service Experts Heating & Air Conditioning
When you have to have furnace service, you can trust the professionals at Service Experts Heating & Air Conditioning to handle the fault code and get your heat flowing again.
Call us at 330-235-1260 or schedule an appointment online today.