Refrigerator ice maker freezes cubes but won't harvest

Rule out the simple stops first: the shutoff arm or bin sensor, the On/Off control and a warm freezer. Then force a harvest with the ice maker's own test (T-H jumper on Whirlpool modules, three arm presses on GE, the Test button on Samsung and LG). If the forced harvest works, the ice maker is fine and the trigger (thermostat/thermistor or temperature) is the issue. If it doesn't, the ice maker usually gets replaced.

Cross-checked ~30 min easyBrands: All

Before you start

Keep fingers out of the ejector or tray path during a test.
Test points L and N on Whirlpool modules are live at 120 V: caution.
Unplug the unit before removing the ice maker.

Diagnostic steps

Unlock all 7 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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