What is a Flammable Vapor (FV) Sensor? FV Sensors are safety devices on select models of water heaters, which cause a soft lockout (a.k.a. the unit shuts down) when flammable vapors are detected near the unit, to prevent the possibility of their ignition.

Can you bypass a flammable vapor sensor on a water heater?

You cannot easily bypass this sensor. If your gas water heater suddenly stops working, it is very likely that this sensor is the cause.

Are flammable vapor sensors universal?

Answer: Hello, if all the spec. Are the same it will work.

How do I know if my water heater is flammable vapor ignition resistant?

A sensor inside the water heater will detect if it has ignited a flammable vapor from outside of the water heater and shut off the flow of gas to the burner and pilot light.

How do you reset an AO Smith power vent water heater?

1 Manual reset is accomplished by first, turning off power to the water heater for 10 seconds. 2 Restore the power to the water heater. 3 Within 10 seconds of restoring power, press the two temperature adjust buttons simultaneously until the left (green) “Vacation” LED begins to blink (approx. 5 second delay).

How do you bypass a flame sensor on a water heater?

Actually, you can bypass the flame sensor. the flame sensor is just a way of exposing the voltage on the flame sensor wire to the furnace burner flames. So you can connect the flame sensor wire to a screwdriver and put the screwdriver into the flames.

How long does a flame sensor last?

Flame sensor lifespan If you’ve just replaced the sensor or had a new furnace installed, you can expect the flame sensor to last for about five years. The average lifespan of a furnace is 15 to 30 years, so you can anticipate a flame sensor replacement once or twice over the course of your homeownership.