Flame Vapor Sensor

The fvs is a relatively newer ish invention that consists of a silicone type sensor that detects flammable vapors outside of the hot water tank.

Flame vapor sensor.

This is a safety mechanism. When the sensor becomes blocked with debris the heater will not work properly. Certain rheem water gas water heater models feature electronic controls with a flammable vapor sensor installed on the bottom portion of the water heater unit. Water heater ignitor and flame rod for ao smith 9003626005 4 4 out of 5 stars 55.

Cleaning the flame sensor is basic maintenance that will improve the. The downside of the sensor is that it can be trigger by other fumes in the vicinity such as paint fumes. The blinking status indicator showed 7 blinks which decodes to flammable vapor sensor lockout. It will shut down the unit even if it is producing heat.

It includes four pins which include the following. The gas valve is a honeywell with an on switch and temperature dial. If you have a gas leak you certainly don t want to have an open flame feeding off that fuel. The 25vs chemi resistive flammable vapor sensor from therm o disc is an integral part of the flammable vapor ignition resistance fvir systems offered by the north american water heater manufactures on residential power vent and high efficiency atmospheric models.

A burner with no flame may release gas into the air. The pin configuration of this sensor is shown below. 25vs ge oem upgraded replacement flammable vapor sensor. Only 3 left in stock order soon.

The sensor is designed to detect the presence of a specific concentration of. The only way i can get the gas valve to come back on is if the flammable vapor sensor reports there are no flammable vapors. A flame sensor detects heat coming from the burners. When this module works with a microcontroller unit then the pins are.

Bradford white oem flammable vapor sensor 239 45560 00 water heater replacement part 2394556000 4 5 out of 5 stars 22. This sensor uses the infrared flame flash method which allows the sensor to work through a coating of oil dust water vapor otherwise ice.