Getting chilly because you’re noticing error code 223 from your Lennox® furnace?
This means your furnace’s low pressure switch is open. Due to the issue, your system will not run for your safety.
Depend on the Experts at Calverley Service Experts to handle mending 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 important to our business. 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 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 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 brought 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 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
- Stopped condensate drain
- Cracked hose
There could also be an issue 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 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 how long it takes to remedy it.
Here are the usual 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 Calverley Service Experts
When you require furnace service, you can call on the professionals at Calverley Service Experts to handle the fault code and get your heat working again.
Call us at 817-380-5647 or schedule an appointment online today.