Outdoor ice merchandiser freezer with an ICE sign on top

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Undercounter ice maker not making ice

Check power, water supply and pressure, drain (pump models stop when they cannot drain), bin sensor, cleaning status, condenser and room temperature. Scale is the most common cause on older machines.

Cross-checked ~60 min moderateBrands: GE, Whirlpool / KitchenAid, Scotsman, Hoshizaki, U-Line, Manitowoc

Before you start

Unplug before removing panels.
Turn off water before disconnecting lines.
Sealed-system work is blocked: refer to an EPA 608-certified technician.

Diagnostic steps

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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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