Flammable Vapour Sensor Resistance

Smith promax after doing some investigating on my hot water tank it was revealed that the hot water tank had placed itself in a lockout due to detection of flammable vapors by the fvir sensor caused by the drying solvent based concrete floor sealant.

Flammable vapour sensor resistance.

Only 7 left in stock order soon. Elegoo 17 values 1 resistor kit assortment 0 ohm 1m ohm pack of 525 rohs compliant for electronic projects 4 7 out of 5 stars 660. 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. The sensor has a resistance of about 10 50 kohms when it has not been exposed to natural gas or splashed with water during cleaning.

Most people don t have a 30 kohm resistor at home to use as a temporary fix. I was able to test the resistance of my fvs using a multimeter and mine was somewhere around 196 000 kilo ohms. This sensor is designed to shut off your water heater system to prevent fires in case flammable vapors are present within the area. This is fast easy and free.

One hack to get your hot water heater going in a pinch don t do this is to install a resistor in the circuit. Unlike active sensors that typically utilize metal oxide or infrared technologies the 25vs does not require an external power source to detect flammable. Rheem ap13447 3 water heater oem replacement flammable vapor sensor 4 5 out of 5 stars 62. The proprietary conductive polymer sensing film expands in the presence of flammable vapors significantly changing sensor resistance.

A higher sensor resistance and vice versa. Hot water tank flammable vapor sensor lockout a o. The 25vs chemi resistive flammable vapor sensor 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. Mega amounts of resistance indicates a bad vapor sensor.

Flammable vapor sensor chemi resistive fl ammable vapor sensor therm o disc s 25vs chemi resistive fl ammable vapor sensor was custom designed for the water heater industry joint research and development consortium to meet flammable vapor ignition resistance fvir requirements of ansi z21 94 csa 6 31 standard. Clearly the fvs had simply gone bad.