How do you replace a gas control valve on a water heater?
Take the original valve with you to the hardware or gas supply store to get a matching replacement. Reconnect the new valve in reverse order. If you do not detect gas or a rotten egg odor, relight the pilot and verify that the water heater is working properly. Newer models may have wires connected to the gas control valve.
Can a faulty heater control valve be repaired?
To repair a faulty switch, you sometimes have to replace the heater control. Depending on the amount of vacuum, the vacuum motor will close off the flow of engine coolant fully or partially. However, even if the heater control supplies vacuum the mechanical portion of the valve can fail, preventing the heater control valve from closing.
What do you do when your water heater is turned off?
With the gas turned off, disconnect the lines connected to the gas control valve using an open faced or adjustable wrench. It is important to hold the water heater in place while applying torque to the connectors or you could cause additional damages.
Where is the gas inlet on a water heater?
The gas inlet connects to the gas control valve, which then, as the name implies, controls the flow of gas to the unit.
What is a heater control valve function?
A heater control valve controls the amount of coolant flowing through the heater core. It is not used in all heater systems, as some manufacturers allow coolant to flow through the heater core any time the engine is running. This type of system uses a blend door to mix cooled and heated air to achieve the desired temperature.
How does the heater control valve operate?
The heater control valve is typically mounted near the firewall, and acts as the valve that allows coolant to flow from the engine to the heater core , which is located inside of the vehicle. When the valve is opened, warm engine coolant passes through the valve and into the heater core, so that hot air can be produced from the vehicle’s vents.
What are the parts of a gas water heater?
Electric and gas water heaters have a number of components in common, including the drain valve, the TPR valve, an internal anode rod, dip tube and pipes and fittings for hot water and overflow/pressure relief.
How does a water heater valve work?
The water heater valve releases water from the tank if the pressure or temperature inside start to approach the tank’s safety limits. As the water in your water heater tank gets hot, the pressure inside the tank builds.