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.
Mon–Sat, 8am–8pm
- Temperature sensors
- Ice maker control and sensor repair
- Source: LG
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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 makerKind of codeTemperature 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 toIce 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 asNo 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.
MakeLG
LG ice maker repair, from a door ice maker that frosts over to a dispenser that stops.
SourceLG 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.
Write down exactly what the display shows, since IS, 1S and 15 look alike.
Reset power once by unplugging the unit for a minute and plugging it back in.
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. 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
No Ice Coming From the Ice Maker
7 causes, cheapest first
Where IS usually leads
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 repairMore LG codes
Temperature sensors 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.
In LG's own words
indicates a problem with the ice maker fan motor or a disconnection of the icemaker sensor
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.
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 IS.
Can I clear IS myself?
Why does my LG show 15 when the list says IS?
Can I fix an LG IS code by defrosting?
Does IS on an LG stop the ice dispenser too?
Back to your everyday
Still showing IS?
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.