Getting cold because you’re seeing error code 223 from your Lennox® furnace?
This is telling you your furnace’s low pressure switch is open. Due to the malfunction, your system will not function for safety reasons.
Turn to the Experts at Service Experts Heating & Air Conditioning to deal with fixing this furnace error. Our NATE-certified technicians are among the best 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 Livermore 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 initiates the call for heat:
- Your furnace’s control board begins the draft inducer blower motor. This gets rid of combustion gases from the heat exchanger and pulls in new gas and air so the burners can ignite.
- When the pressure switch senses that enough air is being pulled into the burners, it closes and triggers the control board to ignite the furnace.
- Your furnace ignites and heats your space.
A two-stage furnace has several pressure switches, which help it to run at various speeds—and be more efficient.
What Happens When a Low Pressure Switch Malfunctions
The low pressure switch may be open for a variety reasons.
There could be a:
- Blocked vent
- Clogged 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 repeats a fault code.
Estimated Repair Cost for Furnace Error Code 223
The cost 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 Service Experts Heating & Air Conditioning
When you need furnace service, you can trust the professionals at Service Experts Heating & Air Conditioning to take care of the fault code and get your heat flowing again.
Call us at 925-364-5427 or schedule an appointment online today.