

Sub-Zero REPLACE FILTER — water filter due
Sub-Zero's own ice maker guide lights REPLACE FILTER in red once the unit completes 8,000 ice-making cycles, or Sub-Zero elsewhere recommends changing the same filter roughly every six months, whichever comes first.
Mon–Sat, 8am–8pm
- Filters
- Water filter and descaling service
- Source: Sub-Zero
Book a visit
Three short steps, about a minute.
or call (844) 879-5178
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What REPLACE FILTER lit red
actually means.
Sub-Zero's own ice maker guide lights REPLACE FILTER in red once the unit completes 8,000 ice-making cycles, or Sub-Zero elsewhere recommends changing the same filter roughly every six months, whichever comes first.
Sub-Zero home appliance display
What to do when REPLACE FILTER lit red shows on the home applianceKind of codeFilters
A filter has reached the end of its life or is clogged enough for the appliance to notice: a refrigerator water cartridge past its gallons or months, a hood's grease or charcoal filter loaded with residue, a dish-care filter packed with food, a washer inlet filter choked with grit. The fix is a clean or a new filter of the right part number, fitted with the appliance unplugged and the water closed where there is one, then the reminder reset.
Usually leads toWater filter and descaling service
Fresh filters in dispensers and ice makers, and scale cleared from steam ovens, ice makers and dish care machines.
Shows up asWater or Ice Tasting Stale: Filter Age, Scale and Idle Lines
Water or ice tasting stale is dispenser water, cubes or nugget ice with a flat, musty, chemical or freezer-food taste, often cloudy, slow to come or smaller than it used to be.
MakeSub-Zero
A Sub-Zero lasts decades when its condenser is kept clean, its door seals stay supple and its water filter is changed on schedule, and that is what a visit covers.
SourceSub-Zero UC-15I ice maker use and care guide
Confirmed in Sub-Zero's UC-15I ice maker use and care guide; the guide also notes the filter should be changed every six months, after a prolonged shutdown, or after 8,000 cycles, whichever comes first.
Before you book,
in this order.
Each step comes from Sub-Zero's own guidance for REPLACE FILTER lit red on its home appliances. Follow it to the end: the last card says whether this is a visit.
Replace the water filter with the model-specific part.
Touch and hold CLEAN for 6 seconds to reset the indicator once the new filter is fitted.
If REPLACE FILTER lights again well before the expected interval, book a visit to check the water supply and flow.
Still there?
It usually turns into water filter and descaling service. Book with the code and the model number.
What not to do
REPLACE FILTER is not a report that the ice maker itself has failed; the light is a cycle-count reminder cleared by swapping the filter, not a diagnosis of the appliance.
What you may
notice with it.
The home appliance problems REPLACE FILTER lit red tends to arrive with. Answer these at the home appliance before anyone is booked.
All problemsWhere REPLACE FILTER lit red usually leads
Water filter and descaling service.
Sub-Zero
home appliances.
A Sub-Zero lasts decades when its condenser is kept clean, its door seals stay supple and its water filter is changed on schedule, and that is what a visit covers.
Sub-Zero home appliance maintenanceMore Sub-Zero codes
Filters on other makes
In Sub-Zero's own words
When the unit completes 8000 ice making cycles, “REPLACE FILTER” will illuminate red to indicate the water filter needs to be replaced. Touch and hold “CLEAN” for 6 seconds to reset the indicator.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Confirmed in Sub-Zero's UC-15I ice maker use and care guide; the guide also notes the filter should be changed every six months, after a prolonged shutdown, or after 8,000 cycles, whichever comes first.
Sub-Zero REPLACE FILTER lit red home appliance maintenance,
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 REPLACE FILTER lit red.
Can I clear REPLACE FILTER lit red myself?
Does the ice maker need to be shut off to change the filter?
Which comes first, six months or 8,000 cycles?
What happens if the filter is left in past its due point?
Back to your everyday
Still showing REPLACE FILTER lit red?
A booking goes further when it has the reminder or code as shown, the model number from the rating plate, and a word on when that filter, screen or tub was last cleaned. With those three, the office can pack the right filter or cleaner for your appliance.