A flame sensor is a safety mechanism installed on gas furnaces. It is located directly between the burners and the gas supply. When your gas kicks on, the flame sensor MUST detect a flame. This safety mechanism is to prevent your house from filling up with un-lit gas. Even if your burners are igniting, if your Flame Sensor is dirty (covered in carbon from typical use) it will fault out, thus shutting off the furnace over and over. If this is the case, your furnace will kick on every 2 minutes (because the thermostat tells it your house is too cold) and then will shut off after 5 or 10 seconds as a result of the Flame Sensor Fault.
A flame eye in a boiler works by detecting the presence or absence of a flame in the combustion chamber. It uses a sensor that measures the UV light emitted by the flame. If the flame is extinguished, the flame eye will signal the control system to shut off the fuel supply to prevent unsafe conditions.
It tells the furnace that it lit... Hence the name Flame Sensor.
Flame rectification in a gas furnace involves using an electrical signal to detect the presence of a flame. When a flame is established, the electrical properties of the flame change, allowing the sensor to confirm its presence. This signal is used by the control system to ensure the furnace continues to operate safely and efficiently.
A flame sensor is a program used to detect "flame" on various blogs or comment boxes. Various Websites may use these sensors to dish out trolls or other internet vermin. On the other hand a flame sensor is also a device used in machines that are subject to very high temperatures. For example, a flame sensor is standard in many home ovens. So this in fact is a very useful safty feature.l
check your flame sensor
Clean it using steel wool.
A York flame sensor typically lasts for several years, around 5-10 years on average, but this can vary based on usage and maintenance. It is important to regularly clean and inspect the flame sensor as part of routine HVAC maintenance to ensure it functions properly.
how sound sensor work
Its not a flamesensor its a pilot generater it generates a small amound of electricity to open the main valve that way if your pilot light goes out it wont let gas escape and couse a potentian explosion The above answer is not accurate unless you have a standing pilot model furnace. Then the "flame sensor is called a thermocouple, much different than the flame sensors used in Direct Spark Ignition, hot-surface and intermitant ignition furnaces. The flame sensor uses the flame of the main burner to prove flame at the circuit board by measuring conductivity to ground through the flame.
flame sensor
If the furnace is direct ignition, The HSI or spark ignites the flame. A flame sensor passes current through the flame, if current is present the main.
You can try shaking it , it usually works