You can tell if a water inlet valve is broken by checking for specific performance failures and physical defects. If your washing machine or dishwasher refuses to accept water during a cycle despite open supply lines, or if water continues to seep into the tub when the machine is powered off, the valve is likely broken. Always turn off the electrical breaker and water supply lines before inspecting components. Inspect the valve body for cracks, mineral crusting, or active leaks, and test the solenoid coil continuity with a multimeter. You can verify that the valve is broken if the meter shows an open circuit or infinite resistance.
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