The sensor will trip if it senses gasoline vapors in the air. It does not respond to other types of flammable vapors. Research shows that gasoline is the most common cause of fire or explosion caused by water heater.
How does a flammable vapor sensor work on a water heater?
Jake called technical support, and found out that the “Flammable Vapor Sensor” had detected smoke or fumes. This sensor is designed to shut down the hot water heater and its pilot light when it senses fumes that may ignite. It is especially sensitive to natural gas odors – and a gas leak could lead to an explosion!
Where is the flammable vapor sensor located?
In general, it is located near the bottom of your unit, but depending on the specific model number and age of your unit, your sensor may have a separate FV Sensor housing.
What does a blinking red light mean on a water heater?
What Does Flashing Red Light On Water Heater Mean? It shows that the gas valve is operating normally, especially if the light flashes once every three seconds. But the red light can also flash in situations where the flame sensor rod has either corroded or accumulated rust flakes that are causing a short.
How do you test a flammable vapor sensor?
1. Using a multimeter to check resistance, remove the sensor from its bracket on the base ring of the water heater and disconnect both wires to the sensor. 2. Take a resistance reading between the two wiring terminals of the FV sensor and note the resistance value.
What is a flammable vapor incident?
A flammable vapor accident has occurred.
This event can be diagnosed as a flammable vapor accident if you see that the flame arrestor has been discolored like it has been overheated. There is no repair for this condition and the water heater must be replaced.
How do you reset the vapor sensor on a Rheem water heater?
Turn the water heater’s gas valve switch to the “OFF” position, wait for a few seconds and then flip the switch to the “ON” position to reset the system. The water heater’s gas valve is located near the bottom of the unit and connects to your home’s natural gas line.
How do you replace a flame sensor on a water heater?
How to Replace the Thermocouple on an Electronic Ignition Water Heater
Remove the Burner Assembly Manifold Cover. Remove the Burner Assembly. Remove the Cover Plate Gasket. Remove the Thermocouple. Install a New Thermocouple. Reinstall the Burner Unit.
What does sensor failure mean on a hot water heater?
When a water heater temperature sensor fails, the water can overheat, remain cold, or you might have insufficient hot water. To troubleshoot the temperature sensor: Use a multimeter to determine the resistance reading of the temperature sensor.
What is the reset button on a water heater for?
With an electric water heater, you have two thermostats; one upper thermostat and one lower one. You’ll find the reset button on the top thermostat. The purpose of these thermostats is to monitor the water temperature and turn off the heating element when the desired temperature is met.
How do you reset a GSW water heater?
If water temperature in the tank reaches 180°F, the manual reset hi-limit switch will be tripped. This switch can be reset by firmly pushing the red button above the upper thermostat. Single-element water heaters have one element mounted at the bottom of the tank controlled by a single thermostat and high limit switch.
How do I know if my water heater is FVIR?
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 can I tell if my water heater is FVIR? Each manufacturer will have its own particular label for indicating if the model is FVIR.
