Feeling a chill because you’re noticing error code 223 from your Lennox® furnace?
This is telling you your furnace’s low pressure switch is open. Due to the issue, your system will not function for safety reasons.
Trust the Experts at Service Experts Heating & Air Conditioning to deal with fixing this furnace error. Our ACE-certified technicians are among the brightest in the industry when it comes to recognizing and repairing furnace troubles.
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 system.
Here’s how your furnace starts after the thermostat begins to 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 ignite.
- When the pressure switch senses that sufficient air is being dragged into the burners, it closes and signals the control board to ignite the furnace.
- Your furnace ignites and heats your home.
A two-stage furnace has several pressure switches, which help it to run at multiple speeds—and use energy more efficiently.
What Happens When a Low Pressure Switch Fails
The low pressure switch may be open for a variety reasons.
There could be a:
- Obstructed vent
- Plugged condensate drain
- Cracked hose
There could also be a problem 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 replays a fault code.
Estimated Repair Cost for Furnace Error Code 223
The price to fix your furnace depends on the issue it has and the time it takes to repair 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 Service Experts Heating & Air Conditioning
When you need furnace service, you can call on the professionals at Service Experts Heating & Air Conditioning to take care of the fault code and get your heat working again.
Call us at 239-908-6991 or schedule an appointment online today.