Sub-Zero won't make ice or dispense water in a Sunnyvale kitchen

It's one of the most common Sub-Zero calls we get in Sunnyvale: the ice bin is empty, or the dispenser runs slow or not at all. Owners assume the worst, but in a hard-water valley the cause is usually mundane and bounded.

Start with the valve, the line, and the filter

Behind a no-ice or no-water complaint there's almost always a water-supply problem, not a control failure. A fill valve crusted with Sunnyvale minerals can't open fully; a line kinked when the column was pushed back into its cabinet restricts flow; and a long-overdue water filter chokes off pressure to both the maker and the dispenser.

We check supply pressure, inspect the saddle valve and the line behind the unit, and replace the filter and inlet valve as needed. Many calls end right there — a clean, inexpensive fix rather than a major repair.

When it's the maker itself

If the water side is healthy and ice still won't form, the issue moves to the ice-maker module, the mold thermostat, or the freezer's ability to hold temperature. Those are still defined parts with known costs. We test before we replace anything, so you're not paying for a module when the real culprit was a $40 valve. The $89 diagnostic goes toward the repair if you move ahead.