Many modern electronic residential refrigerator automatic ice makers feature a physical diagnostic test button or optical reset switch located on the front face of the ice maker housing or behind the front cover module. Pressing and holding this test button for three to five seconds initiates a forced harvest cycle, allowing the microchip control board to run a self-diagnostic check and reset its operational programming. However, older traditional modular ice makers lack a physical reset button and must be reset manually or through a power cycle. You can troubleshoot control freezes easily. You can verify that your reset procedure was successful when pressing the button engages the motor, cycles the harvest arm, and begins filling the mold tray with fresh water.
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