Refrigerator Troubleshooting: How to Check the Starter Relay
Refrigerators are an essential appliance in every household, helping to keep our food fresh and cool. However, like any other machine, refrigerators can sometimes encounter problems. One common issue is when the refrigerator fails to start or cool properly. In such cases, the starter relay could be the culprit.
The starter relay is a small electrical component located in the back of the refrigerator. Its main function is to help start the compressor, which is responsible for cooling the refrigerator. When the starter relay malfunctions, it can prevent the refrigerator from starting, leading to a poor cooling performance.
If you’re experiencing problems with your refrigerator, checking the starter relay should be one of the first troubleshooting steps. In this article, we will guide you through the process of checking the starter relay to identify and resolve any issues.
Checking for Visible Damage
Safety First!
Safety First!
Before we dive into troubleshooting, it’s crucial to ensure your safety. Always unplug the refrigerator from the power source before performing any inspections or repairs. Additionally, wear insulated gloves and safety goggles to protect yourself from any potential electrical hazards.
Now, let’s start by examining the starter relay for any visible damage. Locate the relay, which is usually found at the back of the refrigerator near the compressor. It’s a small box-shaped component with wires connected to it.
Inspect the relay for any signs of melting or burning, such as blackened areas or a strong burnt smell. If you notice any visible damage, it’s likely that the starter relay needs to be replaced. In this case, you can purchase a new relay from an appliance store or order one online.
Testing the Starter Relay
Gather Your Tools
Gather Your Tools
To test the starter relay, you’ll need a few tools: a multimeter, a flat-head screwdriver, and a piece of paper and pen to jot down your findings. If you don’t already have a multimeter, you can easily find one at a hardware store.
Step 1: Switch off and Disconnect
Again, make sure the refrigerator is unplugged from the power source and turned off. This step is crucial to avoid any accidents or electrical shocks during the testing process.
Step 2: Access the Relay
To access the starter relay, you may need to remove a protective cover or panel from the back of the refrigerator. Use a screwdriver to remove any screws or fasteners that hold the cover in place.
Step 3: Disconnect the Relay
Once you have access to the relay, locate the wires attached to it. Gently disconnect the wires from the relay, making sure not to damage them in the process. It’s a good idea to label the wires with a piece of tape or write down their positions for easier reconnection later.
Step 4: Set the Multimeter
Set your multimeter to the continuity or resistance mode. If you’re unsure about the correct setting, consult the user manual that came with your multimeter.
Step 5: Test the Terminal Pins
With the multimeter set, touch the tips of the probes to the terminal pins on the relay. The relay should have three terminal pins labeled “S,” “C,” and “M.” “S” stands for the start terminal, “C” for the common terminal, and “M” for the main terminal.
Step 6: Check for Continuity
While touching the probe tips to the terminal pins, check the multimeter display for a reading. If the multimeter shows a reading of 0 ohms (or very close to 0), it indicates that there is continuity in the relay. This means the relay is functioning correctly.
Step 7: Repeat the Test
Repeat the process by touching the probes to the remaining pairs of terminal pins. Each pair should show continuity or a reading close to 0 ohms. If you encounter a high resistance reading or no reading at all, it suggests that the relay is faulty and needs to be replaced.
Replacing the Starter Relay
Purchase the Right Relay
Purchase the Right Relay
If you have confirmed that the starter relay is faulty, it’s time to replace it. First, ensure you have the correct replacement relay for your refrigerator model. The model number can usually be found inside the refrigerator, on the door frame, or on the back panel.
Disconnect the Old Relay
Starting with the refrigerator still unplugged, detach the old starter relay by pulling it off the compressor terminals. Be gentle to avoid damaging the terminals or wires.
Attach the New Relay
Take the new relay and attach it to the compressor terminals. Make sure it is securely in place and properly aligned.
Reconnect the Wires
Refer to the labels or notes you made earlier and reconnect the wires to their respective terminals on the new relay. Double-check that each wire is tightly connected to avoid any loose connections.
Replace the Cover
Once everything is securely in place, put back the protective cover or panel you removed earlier. Use the screwdriver to fasten the screws or clips and secure the cover.
Plug In and Test
Finally, plug the refrigerator back into the power source and turn it on. Allow some time for the compressor to start and check if the refrigerator is cooling properly. If all goes well, you have successfully replaced the faulty starter relay.
In conclusion, troubleshooting a refrigerator that fails to start or cool effectively often involves checking the starter relay. By visually inspecting the relay for any visible damage and performing a multimeter test, you can identify if the relay is the cause of the problem. If a faulty relay is found, replacing it with a new one is usually a straightforward process. Remember to prioritize safety at all times and consult a professional if you are unsure or uncomfortable with any part of the troubleshooting and repair process.