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 issue, your system will not work for your protection.
Turn to the Experts at Boehmers/Cronin Emery Home Services by Enercare to take care of repairing this furnace error. Our ACE-certified technicians are among the elite in the industry when it comes to diagnosing and repairing furnace issues.
Your satisfaction is essential to our team. 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 system.
Here’s how your furnace starts after the thermostat begins to 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 start.
- 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 several pressure switches, which allow it to run at various speeds—and be more efficient.
What Happens When a Low Pressure Switch Malfunctions
The low pressure switch may be open for several reasons.
There could be a:
- Obstructed 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 an issue with a red flash from its indicator light, which it uses to feature 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 the issue it has and how long 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 Boehmers/Cronin Emery Home Services by Enercare
When you have to have furnace service, you can call on the professionals at Boehmers/Cronin Emery Home Services by Enercare to work on the fault code and get your heat flowing again.
Call us at 519-804-1617 or schedule an appointment online today.