When a Frigidaire residential refrigerator makes a rhythmic buzzing or humming sound every few minutes, it is typically caused by the water inlet valve attempting to supply water to an automatic icemaker when the water supply line is turned off or disconnected. If the icemaker is switched on in the control panel but lacks adequate water pressure, the electric solenoid valve will buzz repeatedly as it tries to open. Another common cause is a vibrating condenser fan motor or a failing compressor start relay trying to engage the motor. You can troubleshoot by turning off the icemaker switch. You can verify that your corrective action is successful when turning off the icemaker or opening the water supply saddle valve completely eliminates the recurring buzzing sound.
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