When it comes to home comfort, having a reliable source of hot water is essential. Rheem water heaters have long been trusted for their durability; however, like any other machine, they might sometimes have problems. One common challenge is the need to relight the pilot light. This detailed guide shows you how to light a Rheem water heater pilot, explaining each step individually.  Whether you’re dealing with a pilot-based system or an alternative ignition module, this guide will ensure a continuous hot water supply when needed.

Understanding Your Rheem Water Heater

Not all Rheem water heaters have pilot lights. Many models are equipped with an alternative ignition system. If your water heater uses one of these systems and you find yourself without hot water, the cause may be an electrical problem or a faulty ignition module. Understanding your specific water heater model is the first step to effectively troubleshooting the problem.

Identifying a Rheem Water Heater with a Pilot Light

To relight the pilot, you must first identify whether or not your ram water heater is equipped with a pilot light. Locate the dial and button on the gas module on the front of the tank. Additionally, check out a small window at the bottom of the tank, which allows you to observe the pilot. Some models also have an LED indicator that blinks when the pilot is on. Knowing the presence of the pilot light is crucial for the next steps.

Preparing to Relight the Rheem Water Heater Pilot

Before we begin, it’s essential to understand that modern gas water heaters require a piezoelectric spark generator to ignite the pilot. To begin, remove the cover plate from the front of the tank, giving you access to the pilot window. Take this opportunity to inspect the pilot and check for signs of weak pilot or burner ignition problems, which could indicate problems with your gas supply.

Step-by-Step Guide to Relighting the Pilot

1.  Begin by ensuring the gas valve is open and positioned in the same direction as the gas pipe.

2. Turn the gas valve on the front of the tank to the “off” position and wait for about five minutes. This lets any leftover gas go away.

3. Push the dial in and press the spark ignition button several times.

4. Hold the button for around 20 seconds after the pilot ignites. This lets a part called the thermocouple get warm because it senses the flame’s heat.

5. If the pilot light stays on when you let go of the button, turn the dial to “on” or choose the temperature you want, depending on the type of water heater you have.

Troubleshooting Pilot Problems

If you’ve tried but can’t get the pilot light on your Rheem water heater to stay on, there could be a problem. One possibility is a worn-out part called the thermocouple. You can replace it, but it can be tricky, especially if your water heater has sealed combustion chambers. It’s usually a good idea to get help from a professional to ensure everything gets fixed safely and works well.

Secondly, If you see a weak, orange pilot flame instead of the usual healthy blue one about an inch tall, it might mean there’s dirt or something inside the pilot tube. Because the chamber is sealed, it’s best to get a professional to clean and maintain it in these situations. Your safety and making sure your water heater works well are essential.


Knowing how to relight the pilot on your Rheem water heater is helpful because it keeps your home’s hot water flowing smoothly. Whether your water heater has a regular pilot light or a different way to start it, these step-by-step directions will help you use it well so your home stays comfy all year. If you run into problems that won’t go away or things get too tricky, it’s a good idea to ask a professional for help. They can make sure everything is fixed safely and works appropriately.

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