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 issue, your system will not function for your safety.
Turn to the Experts at Epperson Service Experts to deal with mending this furnace error. Our NATE-certified technicians are among the elite in the industry when it comes to diagnosing and repairing furnace troubles.
Your satisfaction is important to us. That’s why we back our furnace repair work in Hilton Head Island with a 100% Satisfaction Guarantee* for a year.
How a Low Pressure Switch Works
Pressure switches are an essential part of the heating operation.
Here’s how your furnace acts after the thermostat starts to call for heat:
- Your furnace’s control board begins the draft inducer blower motor. This exhausts combustion gases from the heat exchanger and brings in new gas and air so the burners can fire.
- When the pressure switch senses that enough air is being pulled 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 a few pressure switches, which allow it to run at various speeds—and use energy more efficiently.
What Happens When a Low Pressure Switch Malfunctions
The low pressure switch may be open for a couple 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 tell you there’s a problem 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 observe fast flashes or an alternating slow flash as it replays a fault code.
Estimated Repair Cost for Furnace Error Code 223
The cost to fix your furnace depends on the root problem and the time it takes to fix 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 Epperson Service Experts
When you need furnace service, you can lean on the professionals at Epperson Service Experts to handle the fault code and get your heat moving again.
Call us at 843-619-3781 or schedule an appointment online today.