What is a Flame Sensor?
A flame sensor is a small metal rod that is located near the burner assembly in a furnace or boiler system. When the burner ignites, the flame sensor detects the heat from the flame and sends a signal to the control board to keep the system running. If the flame goes out, the sensor will stop sending the signal and the system will shut down.
Why Would You Want to Trick a Flame Sensor?
There are a few reasons why you might want to trick a flame sensor. First, if your system keeps shutting down even though there is a flame present, it’s possible that the sensor is faulty and needs to be replaced. However, replacing a flame sensor can be expensive and time-consuming. In some cases, it may be easier and more cost-effective to trick the sensor temporarily until you can get it replaced. Second, if you’re working on a DIY project and need to test the system without a flame present, you’ll need to trick the sensor in order to keep the system running.
How to Trick a Flame Sensor
There are a few different ways to trick a flame sensor, depending on the type of system you have. Here are some of the most common methods:
Method 1: Clean the Sensor
Sometimes a dirty or corroded flame sensor can cause the system to shut down even if there is a flame present. In this case, cleaning the sensor can solve the problem. Use a fine-grit sandpaper or steel wool to gently clean the sensor. Be careful not to damage the sensor, as this can cause further problems.
Method 2: Move the Sensor
If the sensor is positioned too close to the burner, it may be detecting too much heat and shutting down the system unnecessarily. Moving the sensor slightly further away from the burner can sometimes solve this problem.
Method 3: Short-Circuit the Sensor
This method should only be used as a temporary solution. To short-circuit the sensor, you’ll need to disconnect the wire that connects the sensor to the control board. Then, use a piece of wire to connect the two terminals on the sensor. This will trick the system into thinking that a flame is present, and it should keep running. However, this method is not safe for long-term use, as it bypasses an important safety feature of the system.
Method 4: Replace the Sensor
If none of the above methods work, it’s likely that the sensor is faulty and needs to be replaced. This should be done by a professional, as it requires specialized knowledge and tools.
FAQs
Q: Is it safe to trick a flame sensor?
A: No, it’s not safe to trick a flame sensor for long-term use. The sensor is an important safety feature that is designed to prevent fires and gas leaks. If you’re having trouble with your system, it’s best to have it inspected by a professional.
Q: How do I know if my flame sensor is faulty?
A: If your system keeps shutting down even if there is a flame present, it’s possible that the sensor is faulty. However, there could be other issues at play as well. It’s best to have your system inspected by a professional to determine the cause of the problem.
Q: How often should I clean my flame sensor?
A: It’s a good idea to clean your flame sensor once a year to prevent buildup of dirt and corrosion. However, if you’re having trouble with your system, you may need to clean it more frequently.
Conclusion
If you’re having trouble with your furnace or boiler system, the problem may lie with the flame sensor. While it’s not safe to trick the sensor for long-term use, there are a few temporary solutions that can help you get your system up and running again. However, if you’re not comfortable working on your system yourself, it’s best to have it inspected by a professional.