A pressure switch stuck in an open position is a common issue that homeowners with furnaces may face over time. There could be several reasons for this problem, so you must know how to determine whether your pressure switch is stuck and how to go about fixing the issue promptly for uninterrupted comfort and warmth during the wintertime.
If you're currently dealing with a stuck open pressure switch or other issues with your HVAC system that is preventing it from running correctly, you've come to the right place.
Join the Romaniuk Heating and Air Conditioning team as we go over pressure switches in greater detail below and how you can fix it so you can continue to keep your family warm and comfortable during those cold winter months.
What Should You Do if the Pressure Switch Is Stuck Open?
A pressure switch's primary responsibility is to monitor the air pressure inside the furnace and make sure it remains within the permitted range, which guarantees a secure ignition and combustion cycle as the furnace starts. In other words, gas furnace pressure switches play an important role in your overall furnace operation.
So, what exactly are you supposed to do when your pressure switch is not working correctly and is stuck open?
Essentially, it's especially unsafe for homeowners to attempt their own inspection or troubleshooting of the pressure switch due to safety concerns. When handling furnace parts, unqualified individuals face the risk of damaging their equipment or harming themselves. Therefore, the best thing you can do is reach out to a licensed HVAC repair technician as soon as possible.
These certified HVAC professionals have the skills and expertise required to examine pressure switches and other essential furnace parts securely. Getting expert assistance can ensure the precise detection and timely repair of any issues, as well as increase the longevity and efficiency of your furnace.
Remember, prompt repairs are the best way to prevent further damage from happening to your furnace.
What Happens to the Furnace When the Pressure Switch Is Not Working Properly?
A malfunctioning pressure switch in a furnace can result in several problems that affect the safety, effectiveness, and general functionality of the appliance. The following are some potential outcomes of a broken pressure switch:
Inability to Ignite
The pressure switch is essential to the furnace's ignition process. The furnace may not ignite if the switch is malfunctioning or remains in the open position, which would result in insufficient heating.
Short Cycling
The furnace may short cycle as a result of a broken pressure switch. This may lead to unequal heating, more component deterioration, and more energy usage.
No Heat Production
The furnace could fail to create heat if the pressure switch is left open. This safety measure keeps the furnace from working.
Constant Blower Fan Operating
When a pressure switch isn't working correctly, the blower fan may function nonstop even when the burners aren't operating. This may result in discomfort and needless energy use.
Higher Energy Bills
When a pressure switch isn't working correctly, the furnace won't operate as efficiently and will use more energy than is necessary. The cost of your monthly bills can also increase significantly, making it expensive to heat your home.
Carbon Monoxide Leaks
Furnace combustion gases, including carbon monoxide, can leak into your home if your HVAC pressure switch fails to operate correctly. If the pressure switch is stuck open and exhaust gases leak into your home, it can create a potentially dangerous situation in your home that requires an immediate service call.
Possible Component Damage
Running a furnace continuously could put extra strain on other parts of the system, which could lead to damage and more costly repairs.
Why Is My Pressure Switch Stuck Open?
There are several possible reasons why you have a furnace pressure switch stuck open. Some common reasons why a pressure switch could become stuck open are as follows:
Blocked Exhaust Pipe or Vent
When the flow of air is restricted by blockages in the exhaust pipe or vent, not enough pressure is produced to hold the pressure switch open.
Faulty Motor
Low air pressure can result from a slow-acting or defective motor.
Restricted Condensate Drain
The safety function of the pressure switch could stay engaged due to a blocked condensate drain.
Damaged Pressure Switch
Incorrect pressure readings caused by internal problems or damage from prolonged usage may cause the furnace pressure switch to stay open even under ideal conditions.
It is recommended that you speak with a professional HVAC technician for guidance on how to resolve an open pressure switch. They can swiftly get your furnace operating properly again by doing a thorough inspection, identifying the root of the issue, and making the necessary repairs or modifications.
What Are Common Pressure Switch Issues?
There are several reasons why pressure switch problems can occur in a furnace and interfere with the heating system's regular operation. Here is a closer look at some of the other common pressure switch issues you may experience with your gas furnace:
Water or Moisture Intrusion
Water or moisture getting inside the pressure switch enclosure might cause electrical issues or deterioration, which will impair the switch's functionality.
Wiring Issues
Loose or damaged wiring connected to the pressure switch can prevent it from functioning properly and leading it to remain open. To troubleshoot electrical issues, check your breaker box to see if any switch has tripped.
If so, flip the switch back on and restart your furnace to see if the issue with the pressure switch resolves itself.
Problems with Pressure Switch Tubing
Defective or kinked tubing that runs from the furnace and motor to the pressure switch may interfere with pressure measurements, keeping the pressure switch open.
Ultimately, addressing these pressure switch issues requires professional expertise that only a certified HVAC technician possesses. Therefore, if you suspect problems with your furnace's pressure switch, it's recommended that you consult with a professional HVAC company in your area.
Need Help with Your Gas Furnace Pressure Switch? Contact Romaniuk Heating and Air Conditioning!
Do you need help with your furnace pressure switch that remains open even when your furnace isn't on? If so, Romaniuk Heating and Air Conditioning is here to help. Our certified HVAC technicians have years of experience partnering with homeowners.
We understand that furnace issues can happen at any time, which is why our certified technicians are available 24/7/365 days a year, including after-hours, weekends, and holidays, at no extra cost. In emergency cases, our team can also accommodate same-day furnace repairs!
Romaniuk Heating and Air Conditioning collaborates with homeowners throughout Edmonton, Red Deer, Beaumont, Devon, Fort Saskatchewan, Jasper Place, Leduc, Mill Woods, North Central, Sherwood Park, South Central, Spruce Grove, St. Albert, Stony Plain, and West Edmonton.
If you live in any of these areas, don’t hesitate to reach out to the team over the phone or book your repair appointment with us online so we can have your furnace back up and functioning correctly in no time.