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The flame sensor confirms to the HVAC system that the gas valve is open and flame is present during the ignition cycle. As gas is ignited, the flame sensor creates a current of electricity. A dirty or malfunctioning flame sensor will prevent the furnace from operating a safety precaution by interrupting the ignition cycle. In this section displayed are many replacement flame sensors for adding or repairing various furnace applications.
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Q: What is a flame sensor?
A: A flame sensor is a component of a gas furnace or boiler that detects the presence of a flame in the burner assembly. It is a safety device that ensures the furnace only releases gas when there is a flame present.
Q: How does a flame sensor work?
A: A flame sensor is typically a metal rod located near the burner assembly of a furnace. When the burner ignites, the flame touches the flame sensor, which creates an electrical current. If the current is not present, the furnace will shut off the gas supply to prevent a gas leak.
Q: What are the signs of a faulty flame sensor?
A: Signs of a faulty flame sensor include a furnace that won't start, frequent cycling on and off, a yellow or flickering flame, and an error code displayed on the furnace control board. If you suspect a faulty flame sensor, it is recommended that you have it inspected and replaced by a licensed HVAC technician.
Q: Can I replace a flame sensor myself?
A: While it is possible to replace a flame sensor yourself, it is a delicate repair that requires a good deal of experience and knowledge of HVAC systems. It is recommended that you hire a licensed HVAC technician to perform the repair.
Q: How much does it cost to replace a flame sensor?
A: The cost of replacing a flame sensor can vary depending on the make and model of your furnace and the complexity of the repair. On average, the cost of replacing a flame sensor ranges from $75-$250, including parts and labor.
Q: How often should a flame sensor be cleaned?
A: A flame sensor should be cleaned at least once a year as part of routine furnace maintenance. However, if your furnace is located in a particularly dusty or dirty environment, it may need to be cleaned more frequently.
Q: Can a dirty flame sensor affect the efficiency of my furnace?
A: Yes, a dirty flame sensor can cause your furnace to operate less efficiently, as it may not be able to detect the presence of a flame and may cycle on and off frequently. This can lead to higher energy bills and potentially costly repairs.
Q: How can I maintain my flame sensor?
A: Regular maintenance can help to extend the life of your flame sensor. This can include cleaning the sensor with a fine-grit sandpaper, checking the wiring and connections, and scheduling annual tune-ups with a professional HVAC technician.
Eg :4AC13B18P-1A
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