A water heater flame sensor is an essential component of a gas-powered water heater, responsible for ensuring that the pilot light is lit and that the burner is functioning correctly. Over time, the flame sensor may become dirty or damaged, which can cause the water heater to shut off or fail to ignite. In this article, we will provide a step-by-step guide on how to replace a water heater flame sensor.
Step 1: Turn off the Gas and Electricity
Before replacing a water heater flame sensor, it’s essential to turn off both the gas and electricity to the water heater. Locate the gas valve on the water heater and turn it off. Then, locate the circuit breaker for the water heater and turn it off as well. This will prevent any accidental gas leaks or electrical shocks during the replacement process.
Step 2: Remove the Access Cover
Next, locate the access cover on the water heater. This is typically located on the bottom of the unit or on the side. Remove the access cover by unscrewing the screws or lifting it off, depending on the type of cover.
Step 3: Locate the Flame Sensor
Once the access cover is removed, locate the flame sensor. The flame sensor is typically located near the burner, with a wire attached to it. It’s important to take note of the position of the flame sensor so that the new sensor can be installed in the correct location.
Step 4: Remove the Old Flame Sensor
To remove the old flame sensor, gently pull on the wire to release it from the sensor. Then, use a screwdriver to remove the screws that are holding the sensor in place. Once the screws are removed, carefully remove the old flame sensor from the water heater.
Step 5: Install the New Flame Sensor
Before installing the new flame sensor, check to ensure that it’s the correct size and type for your water heater. Then, position the new flame sensor in the same location as the old sensor and use the screws to secure it in place. Finally, attach the wire to the new flame sensor.
Step 6: Replace the Access Cover
Once the new flame sensor is installed, replace the access cover and secure it in place with the screws or clips.
Step 7: Turn on the Gas and Electricity
After the new flame sensor is installed and the access cover is replaced, it’s time to turn the gas and electricity back on. Turn on the gas valve and relight the pilot light according to the manufacturer’s instructions. Then, turn on the circuit breaker for the water heater.
Step 8: Test the Water Heater
Finally, test the water heater to ensure that the new flame sensor is working correctly. Turn on the hot water faucet and wait for the water heater to heat up. If the water heater heats up and the burner remains lit, then the new flame sensor is functioning correctly.
Conclusion
Replacing a water heater flame sensor can be a simple process, but it’s important to take the necessary precautions to ensure safety and proper installation. By turning off the gas and electricity, removing the access cover, locating the flame sensor, removing the old sensor, installing the new sensor, replacing the access cover, and testing the water heater, homeowners can successfully replace a water heater flame sensor and ensure that their water heater is functioning correctly. However, if you’re uncomfortable with this process or if you’re unsure of the type of flame sensor to use, it’s always best to consult with a licensed professional for assistance.
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