In this article, we’ll guide you on how to replace expansion valve all by yourself.
Step-by-Step Guide on How to Replace Expansion Valve
Replacing the expansion valve is a meticulous task, but with the right guidance, you can manage it efficiently. Here’s a detailed breakdown of the procedure:
Turn off the AC system: Always start by switching off the main power supply to the AC. This ensures your safety while working on internal components. If uncertain, you can also turn off the circuit breaker.
Gather necessary tools: Typically, you’ll need a screwdriver, wrenches, and possibly a pair of needle-nose pliers like this Edward Tools Pro-Grip Needle Nose Pliers from Amazon. It’s also helpful to have a container or bag for screws and small parts.
Open the AC unit: Depending on your AC model, remove the necessary screws or bolts securing panels or covers that shield the internal components. Remember to keep all screws in a safe place for reassembly.
Locate the expansion valve: With reference to the user manual, identify the expansion valve. You can also check the next section of this article to find out the location of the expansion valve. It often looks like a small metallic device with tubes running in and out.
Document the setup: Before disconnecting anything, take a clear photo with your phone. This acts as a reference when installing the new valve, ensuring you connect everything correctly.
This Amazon-listed Motorola Moto G Stylus has a 50MP camera that can capture a clear photo.
Disconnect the valve: Using your tools, gently disconnect the faulty expansion valve from its connections. Remember to be gentle to avoid damaging adjacent components.
Install the new expansion valve: Align the new valve just as the old one was placed. Using the photo you took earlier, reconnect all the tubes and connections securely.
Reassemble the AC unit: Once the new expansion valve is in place, begin the reassembly process. Secure all panels and covers using the screws you had kept aside. Ensure everything is tight and in its right position.
Test your AC: Restore power to the AC and turn it on. Listen for any unusual sounds, and ensure it’s cooling effectively. If everything seems normal, you’ve successfully replaced the expansion valve!
If, after following these steps, your AC is not working correctly or you feel uncertain about any part of the process, it’s always a good idea to consult with a professional or refer to the AC unit’s manual.
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Locating the Expansion Valve
The expansion valve plays a crucial role in your AC system by controlling the flow of refrigerant. Therefore, knowing its location is essential for any maintenance or repair activities. However, its position can vary depending on the type of AC system you have.
Central Air Conditioners: In most central air conditioning systems, the expansion valve is found inside the air handler or furnace. It’s positioned close to the evaporator coil.
Window AC Units: In window units, the expansion valve is often located at the back, closer to the cooling coils. You might need to remove a few screws and panels to access it.
For specific models, always refer to the user manual provided by the manufacturer. The manual typically has a labeled diagram showing the expansion valve location and other essential components.
