--- title: "LG IS, 1S or 15: icemaker sensor or fan motor" description: "What IS means on LG IS, 1S or 15: icemaker sensor or fan motors, what to check before booking, and when it is not a failure at all." url: "https://icemakerrepair.center/error-codes/lg-is/" --- # LG IS, 1S or 15: icemaker sensor or fan motor LG lists IS, which some displays show as 1S or 15, for a problem with the ice maker fan motor or a disconnected icemaker sensor. ## What IS actually means. LG lists IS, which some displays show as 1S or 15, for a problem with the ice maker fan motor or a disconnected icemaker sensor. Either one leaves the ice maker unable to judge or reach freezing temperature, and there are no owner steps for it. LG ice maker display · also shown as 1S, 15 What to do when IS shows on the ice maker ### Kind of code Temperature sensors The control lost track of how cold the ice mold or the ice compartment is, because a thermistor reads nonsense or its wire lost contact. Without that reading the ice maker cannot tell when a batch is frozen, so it stops or harvests at the wrong time. Frost packed around the sensor and a loose plug are checked before the sensor itself is changed. ### Usually leads to Ice maker control and sensor repair The control board, the thermistors, the bin sensor and the wiring that decide when an ice maker fills, freezes and stops, tested and repaired when a light flashes, a code shows, a breaker trips or the ice never stops coming. ### Shows up as No Ice Coming From the Ice Maker The mold sits empty or holds one frozen batch that never drops, the bin stays bare for days, and the dispenser gives water as usual: an ice maker not making ice while the rest of the appliance carries on normally. ### Make LG LG ice maker repair, from a door ice maker that frosts over to a dispenser that stops. ### Source LG error code list (Wayback, 17 Jan 2025) LG models with an ice maker sensor; LG notes the characters vary by model. ## Before you book, in this order. Each step comes from LG's own guidance for IS on its ice makers. Follow it to the end: the last card says whether this is a visit. 01 Write down exactly what the display shows, since IS, 1S and 15 look alike. 02 Reset power once by unplugging the unit for a minute and plugging it back in. 03 If the code returns, book a visit; LG gives no further owner steps. ### Still there? It usually turns into [ice maker control and sensor repair](https://icemakerrepair.center/services/ice-maker-control-and-sensor-repair/). Book with the code and the model number. ### What not to do IS is not the same as IF, which concerns frost at the ice maker fan and starts with a defrost. It is also not a water or filter code. ## What you may notice with it. The ice maker problems IS tends to arrive with. Answer these at the ice maker before anyone is booked. [All problems](https://icemakerrepair.center/problems/) Before you call ### [No Ice Coming From the Ice Maker](https://icemakerrepair.center/problems/ice-maker-not-making-ice/) [All 7 causes, cheapest first](https://icemakerrepair.center/problems/ice-maker-not-making-ice/) It also comes with - [**Ice Maker Error Code**](https://icemakerrepair.center/problems/ice-maker-error-code/) Problem ### No Ice Coming From the Ice Maker 7 causes, cheapest first Where IS usually leads ## Ice maker control and sensor repair. **Control board, thermistor or bin sensor · moderate to highest.** Book a visit [What the job involves](https://icemakerrepair.center/services/ice-maker-control-and-sensor-repair/) ## LG ice makers. LG ice maker repair, from a door ice maker that frosts over to a dispenser that stops. [LG ice maker repair](https://icemakerrepair.center/brands/lg/) More LG codes [IF](https://icemakerrepair.center/error-codes/lg-if/) [It](https://icemakerrepair.center/error-codes/lg-it/) [gF](https://icemakerrepair.center/error-codes/lg-gf/) [EID](https://icemakerrepair.center/error-codes/lg-eid/) [EIU](https://icemakerrepair.center/error-codes/lg-eiu/) [C1](https://icemakerrepair.center/error-codes/lg-c1/) Temperature sensors on other makes [Bertazzoni EE](https://icemakerrepair.center/error-codes/bertazzoni-ee/) [Kenmore Er IS](https://icemakerrepair.center/error-codes/kenmore-er-is/) [Samsung 8E](https://icemakerrepair.center/error-codes/samsung-8e/) [True Residential E1](https://icemakerrepair.center/error-codes/true-e1/) [U-Line E1](https://icemakerrepair.center/error-codes/u-line-e1/) [Viking NO WATER and DRAIN lamps blinking](https://icemakerrepair.center/error-codes/viking-no-water-and-drain-lamps-blinking/) [All 14 codes of this kind](https://icemakerrepair.center/error-codes/#family-sensor) LG builds this ### 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. LG builds this ### 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. ## In LG's own words > indicates a problem with the ice maker fan motor or a disconnection of the icemaker sensor [LG error code list (Wayback, 17 Jan 2025)](https://web.archive.org/web/20250117230657/https://www.lg.com/us/support/help-library/lg-refrigerator-error-code-list--1441392048805) [LG error code list (Wayback, 17 Jan 2025)](https://web.archive.org/web/20250117230657/https://www.lg.com/us/support/help-library/lg-refrigerator-error-code-list--1441392048805) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. LG models with an ice maker sensor; LG notes the characters vary by model. ## LG IS 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. 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Write down exactly what the display shows, since IS, 1S and 15 look alike. If it comes back, it needs a visit. ### Why does my LG show 15 when the list says IS? LG notes the code can appear as IS, 1S or 15 depending on the display. All three carry the same meaning. ### Can I fix an LG IS code by defrosting? LG gives no owner steps for IS. A power reset is harmless to try, but a sensor that has come loose or a fan motor problem needs a technician. ### Does IS on an LG stop the ice dispenser too? The dispenser still works while ice is in the bin, but the ice maker stops producing, so the bin runs down. --- **[Read on the site: LG IS, 1S or 15: icemaker sensor or fan motor](https://icemakerrepair.center/error-codes/lg-is/)** **[Book a visit with IceMakerRepair.center](https://icemakerrepair.center/schedule/)**