Feeling a chill because you’re getting error code 223 from your Lennox® furnace?
This means your furnace’s low pressure switch is open. Due to the failure, your system will not function for safety reasons.
Turn to the Experts at Strand Brothers Service Experts 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 problems.
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 process.
Here’s how your furnace works after the thermostat initiates the call for heat:
- Your furnace’s control board begins the draft inducer blower motor. This exhausts combustion gases from the heat exchanger and sucks 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 tells the control board to ignite the furnace.
- Your furnace ignites and heats your space.
A two-stage furnace has a few pressure switches, which permit it to run at multiple 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:
- Obstructed vent
- Stopped condensate drain
- Cracked hose
There could also be an issue with the switch itself, the inducer or the circuit board.
Your furnace will tell you 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 see fast flashes or an alternating slow flash as it reiterates a fault code.
Estimated Repair Cost for Furnace Error Code 223
The expense to fix your furnace depends on the issue it has and how long 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 Strand Brothers Service Experts
When you require furnace service, you can call on the professionals at Strand Brothers Service Experts to handle the fault code and get your heat flowing again.
Call us at 512-596-1257 or schedule an appointment online today.