Manitowoc SL2 light: safety limit 2, harvest time too long
Safety limit 2 counts harvests that reached 3.5 minutes without the ice opening the curtain.
Mon–Sat, 8am–8pm
- Harvest and freeze cycle
- Ice machine harvest repair
- Source: Manitowoc
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Three short steps, about a minute.
or call (844) 410-9163
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What SL2
actually means.
Safety limit 2 counts harvests that reached 3.5 minutes without the ice opening the curtain. On Indigo boards the SL2 light flashes and the head keeps working through hundreds of these before stopping. On Q210 and Q270 undercounters, three long harvests trigger the limit and the harvest light flashes twice after the toggle switch is cycled; that limit has to be reset by hand.
Manitowoc ice machine display
What to do when SL2 shows on the ice machineKind of codeHarvest and freeze cycle
A freeze ran longer than the board allows, or a harvest started and the ice never fell. Scale on the evaporator holds the sheet to the plate, a thickness probe crusted with minerals never signals, a hot gas valve that does not open leaves the plate cold, a harvest assist that does not push, or a water curtain that swings without tripping its switch all end in this family. A cleaning cycle run by the manual often clears it; a valve or a probe is a technician's job.
Usually leads toIce machine harvest repair
The hot gas valve, harvest assist, curtain switch and thickness probe that decide when a sheet of cubes is done and make it drop.
Shows up asIce Machine Error Code or Flashing Light: What It Is Telling You
An ice machine error code may show as a number on a small display, a pattern of blinking lights on the control board, a colored light on the front, or a machine that stops with one indicator flashing.
MakeManitowoc
With a Manitowoc ice machine, the technician notes what the controls report and checks the bin control before opening the cycle for testing.
SourceManitowoc Indigo ice machines installation, operation and maintenance manual (Part Number 000013325 Rev 02)
Indigo boards (SL2 light, stop after 500 long harvests on firmware 5.009 and earlier) and Q210/Q270 undercounters (manual reset after three).
Before you book,
in this order.
Each step comes from Manitowoc's own guidance for SL2 on its ice machines. Follow it to the end: the last card says whether this is a visit.
Cycle the toggle switch Off and On, and count two flashes of the harvest light to confirm limit 2.
Look for cubes jammed against the curtain and make sure the head is level.
If the ice still hangs on the plate after a restart, book a visit for the hot gas valve and the plate.
Still there?
It usually turns into ice machine harvest repair. Book with the code and the model number.
What not to do
SL2 is not a slow freeze; one flash, SL1, is. It also does not mean the bin is full, which on these heads shows as the bin switch light.
What you may
notice with it.
The ice machine problems SL2 tends to arrive with. Answer these at the ice machine before anyone is booked.
All problems
Where SL2 usually leads
Ice machine harvest repair.
Manitowoc
ice machines.
With a Manitowoc ice machine, the technician notes what the controls report and checks the bin control before opening the cycle for testing.
Manitowoc ice machine repairMore Manitowoc codes
All 15 Manitowoc codesHarvest and freeze cycle on other makes
Modular ice machine
An ice-making head set on top of a separate storage bin or drink dispenser, cooled by air, water or a condenser on the roof, turning out hundreds of pounds of cubes a day.
Undercounter ice machine
A self-contained ice machine that makes and stores its own ice under a bar, a service counter or a kitchen island, from commercial units to clear-ice models in large homes.
Nugget ice machine
An ice machine that freezes a thin layer inside a chilled cylinder and pushes it out with an auger as soft, chewable nuggets, for clinics, offices, hotels and large homes.
In Manitowoc's own words
If 500 consecutive 3.5 minute harvest cycles occur, the ice machine stops.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Indigo boards (SL2 light, stop after 500 long harvests on firmware 5.009 and earlier) and Q210/Q270 undercounters (manual reset after three).
Manitowoc SL2 ice machine 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 SL2.
Can I clear SL2 myself?
Why does my Manitowoc undercounter need a manual restart after SL2?
Can scale cause SL2 on a Manitowoc?
Is SL2 the same as E02 on a Manitowoc?
Back to your everyday
Still showing SL2?
A booking with a code goes further when it carries the light or code copied as it appeared, the model and serial off the data plate, and a word on whether cubes still fall into the bin. With those three in hand, our office can match the probable part to your machine the same afternoon.