Getting chilly because you’re seeing error code 223 from your Lennox® furnace?
This indicates your furnace’s low pressure switch is open. Due to the malfunction, your system will not work for safety reasons.
Depend on the Experts at Bob Brown Service Experts to take care of mending this furnace error. Our NATE-certified technicians are among the elite in the industry when it comes to recognizing and repairing furnace issues.
Your satisfaction is important to our team. That’s why we back our furnace repair work in Tempe with a 100% Satisfaction Guarantee* for a year.
How a Low Pressure Switch Works
Pressure switches are an essential part of the heating system.
Here’s how your furnace acts 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 pulls in new gas and air so the burners can start.
- When the pressure switch senses that sufficient air is being brought into the burners, it closes and tells the control board to ignite the furnace.
- Your furnace ignites and heats your house.
A two-stage furnace has a few pressure switches, which help it to run at multiple speeds—and use less energy.
What Happens When a Low Pressure Switch Malfunctions
The low pressure switch may be open for several reasons.
There could be a:
- Obstructed vent
- Plugged 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 something wrong with a red flash from its indicator light, which it uses to display 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 repeats a fault code.
Estimated Repair Cost for Furnace Error Code 223
The cost to fix your furnace depends on what’s wrong with it and the time it takes to remedy 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 Bob Brown Service Experts
When you need furnace service, you can call on the professionals at Bob Brown Service Experts to take care of the fault code and get your heat working again.
Call us at 623-243-4517 or schedule an appointment online today.