Feeling a chill because you’re noticing 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.
Depend on the Experts at Parker Pearce Service Experts Heating & Air Conditioning to take care of fixing this furnace error. Our NATE-certified technicians are among the elite in the industry when it comes to understanding and repairing furnace troubles.
Your satisfaction is critical to our business. That’s why we back our furnace repair work in Gaithersburg with a 100% Satisfaction Guarantee* for a year.
How a Low Pressure Switch Works
Pressure switches are an essential part of the heating process.
Here’s how your furnace starts after the thermostat starts to 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 dragged into the burners, it closes and triggers the control board to ignite the furnace.
- Your furnace ignites and heats your home.
A two-stage furnace has a few pressure switches, which help 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 variety reasons.
There could be a:
- Blocked vent
- Plugged 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 something wrong 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 notice fast flashes or an alternating slow flash as it repeats a fault code.
Estimated Repair Cost for Furnace Error Code 223
The expense to fix your furnace depends on the root problem and the hours 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 Parker Pearce Service Experts Heating & Air Conditioning
When you have to have furnace service, you can call on the professionals at Parker Pearce Service Experts Heating & Air Conditioning to take care of the fault code and get your heat flowing again.
Call us at 301-476-4577 or schedule an appointment online today.