If your gas water heater isn’t producing hot water, one of the first things to check is whether the pilot light is still lit. A pilot light that has gone out can prevent the water heater from operating, but relighting it is often a simple process on newer models with an electronic ignition system.
In this video, we’ll demonstrate how to light the pilot on a gas water heater with a gas control valve similar to the one shown. You’ll learn how to identify the pilot setting, use the ignition button, and know when it’s safe to release the control knob after the pilot has been lit.
We’ll also explain what the flashing status light means and how the thermopile works to signal that the pilot is burning. Once the pilot is established, we’ll show you how to adjust the water temperature and discuss why setting it too high can create a scalding hazard.
Keep in mind that gas control valves and ignition systems can vary between manufacturers and models, so always follow the lighting instructions printed on your specific water heater. If you smell gas, don’t attempt to light the pilot. Turn off the gas if safe to do so, leave the area, and contact your gas utility or a qualified professional.
Watch the full video below to see how to relight a gas water heater pilot light and get your water heater operating again.
Frequently Asked Questions
Why did my gas water heater pilot light go out?
A pilot light can go out for several reasons, including a faulty thermopile, a problem with the gas supply, or an issue with the pilot assembly.
How long should I hold the button when lighting a pilot light?
The required time varies by model. Follow the manufacturer’s instructions for your water heater.
What does a flashing light on my water heater gas control valve mean?
On many models, a flashing status light indicates that the pilot is lit and the gas control system is operating. Flash patterns can also indicate diagnostic codes, so check your manufacturer’s guide.
What temperature should I set my gas water heater to?
A setting of approximately 120°F is commonly recommended to reduce the risk of scalding while still providing adequate hot water for most households.