Sub-Zero Classic BI Code 30-8-30: Ice maker valve on too long

What 30-8-30 means

Sub-Zero Classic built-in units like the BI-36UFD/S log 30-8-30 when the ice maker valve has been enabled too long. The control's explanation is unusual: it did not open the water valve, yet it saw water passing through. That points to a valve that leaks or sticks open. Owners may find overfilled trays, an ice block fused in the bin, ice spilling from the ice maker, or water collecting in the freezer.

Common causes of 30-8-30

Water valve stuck partly open and passing water
Valve not sealing because of debris or high supply pressure
Valve control circuit holding it energized

✓ One safe check you can try

1. Turn off the ice maker switch to stop further filling. 2. If water keeps flowing, close the household shutoff valve to the unit. 3. Remove any fused ice from the bin and dry the area. 4. Watch the floor in front of the unit for leaks and call us if you see any.

! Why to stop there

The water valve sits behind the lower grille near live wiring.
A leaking valve can damage cabinets and floors if fitted badly.
Supply pressure and valve seating must be confirmed together.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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30-8-3030-8-30 questions

Why does the code mention water I did not ask for?

The BI control watches water flow and saw water moving while the valve should have been closed. That usually means the valve is sticking or leaking through.

Is it safe to leave the water connected?

Short term, with the ice maker turned off and no leaks, yes. If water reaches the floor, close the shutoff valve and keep it closed until we replace the valve.

What will the visit include?

We check supply pressure, test the valve and inspect the lines for debris. You get a written price before work starts, and the valve repair is covered by our 30-day workmanship warranty.