Copeland Comfort Control (White Rodgers) 790-843A1 Universal Flame Sensor

The Emerson 790-843A1 Universal Flame Sensor is a crucial safety component in gas-fired HVAC equipment, including furnaces, boilers, and water heaters. It detects the presence of a flame in the burner assembly. This sensor plays a vital role in ensuring safe and efficient operation by shutting down the gas supply if no flame is detected. This prevents gas leaks and potential hazards. The sensor is compact, measuring only 1 inch by 0.5 inch by 0.1 inch, and can withstand a wide temperature range of -40°C to 85°C, making it suitable for various environments. Its universality allows it to replace over 150 different flame sensor part numbers.