Sub-Zero 30 8 30: water moving through a valve that should be closed
On Classic (BI) built-in models, 30 8 30 means the control saw water flowing even though it had not opened the water valve.
Mon–Sat, 8am–8pm
- Water supply and fill
- Ice maker water inlet valve repair
- Source: Sub-Zero
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What 30 8 30
actually means.
On Classic (BI) built-in models, 30 8 30 means the control saw water flowing even though it had not opened the water valve. A valve that lets water by can overfill the ice maker, spill into the bin or freezer, or leave water where it should not be.
Sub-Zero ice maker display · also shown as 30-8-30, 30830
What to do when 30 8 30 shows on the ice makerKind of codeWater supply and fill
The ice maker asked for water and got too little, too slowly or none at all, or water kept arriving after the fill should have ended. A closed shutoff, a kinked line, a clogged filter and low house pressure are ruled out before the water inlet valve is replaced or the fill tube is thawed. If water is on the floor, close the supply valve before reading anything on the display.
Usually leads toIce maker water inlet valve repair
The electric valve that lets water into the ice maker, tested and replaced when it will not open, opens only partway, or keeps dripping after it should have closed.
Shows up asIce Maker Leaking on the Floor
A puddle that spreads from under the door dispenser, from the kickplate of the freezer, from beneath an undercounter unit or around a countertop model, and comes back after you mop it up is the classic sign of an ice maker leaking on the floor.
MakeSub-Zero
Sub-Zero ice maker service, for ice makers in built-in units and those under the counter.
SourceSub-Zero answer: Classic built-in error code 30 8 30
Sub-Zero Classic (BI) built-in models with an ice maker and flow sensing.
Before you book,
in this order.
Each step comes from Sub-Zero's own guidance for 30 8 30 on its ice makers. Follow it to the end: the last card says whether this is a visit.
Look under and around the unit and inside the freezer for water; if you find any, close the water shutoff valve feeding the unit.
Switch the unit's home breaker off for 30 seconds and back on, but only if the panel and floor near it are dry.
Leave the water off and book a visit if 30 8 30 returns.
Still there?
It usually turns into ice maker water inlet valve repair. Book with the code and the model number.
What not to do
30 8 30 is not about low pressure or a clogged filter. It is the opposite: water moving when the valve is supposed to be closed.
What you may
notice with it.
The ice maker problems 30 8 30 tends to arrive with. Answer these at the ice maker before anyone is booked.
All problems
Where 30 8 30 usually leads
Ice maker water inlet valve repair.
Sub-Zero
ice makers.
Sub-Zero ice maker service, for ice makers in built-in units and those under the counter.
Sub-Zero ice maker repairMore Sub-Zero codes
All 15 Sub-Zero codesWater supply and fill on other makes
Door ice maker
The ice maker that feeds the dispenser on the outside of a door: tucked into an insulated box in the left door of a French door model, or at the top of the freezer side of a side-by-side, with a chute and an auger carrying cubes to your glass.
Freezer ice maker
The ice maker that sits inside the freezer compartment itself, a tray that twists or a mold with a heater and an ejector, dropping cubes into a bin or drawer you open by hand, with no dispenser on the door.
Undercounter ice maker
A built-in residential ice maker that lives under a kitchen, bar or basement counter, making clear cubes or chewable nugget ice on its own cooling system, with a water line in and a gravity drain or a small drain pump out.
In Sub-Zero's own words
Water valve not opened but water observed passing through
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Sub-Zero Classic (BI) built-in models with an ice maker and flow sensing.
Sub-Zero 30 8 30 ice maker repair,
where we come out.
The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.
All service areasTampa BayFL · 31 areas
Miami / South FloridaFL · 47 areas
New York MetroNY · 75 areas
HoustonTX · 36 areas
ChicagoIL · 50 areas
Los AngelesCA · 95 areas
San DiegoCA · 31 areas
Questions
about 30 8 30.
Can I clear 30 8 30 myself?
Why is 30 8 30 on a Sub-Zero treated as urgent?
Where is the water shutoff for a Sub-Zero built-in?
Can 30 8 30 come from a worn water valve on an older Sub-Zero?
Back to your everyday
Still showing 30 8 30?
Book with the code or the blink pattern written exactly as the ice maker shows it, the full model number, and whether there is any water on the floor — when there is a code, that is where the diagnosis starts.