KoolAire SL#1 and SL#2 flashing together: service limit 3, no water
When a KoolAire head fills, water should lift the harvest float within four minutes of the inlet valve opening.
Mon–Sat, 8am–8pm
- Water supply
- Ice machine water valve and filter repair
- Source: Koolaire
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What SL#1 + SL#2
actually means.
When a KoolAire head fills, water should lift the harvest float within four minutes of the inlet valve opening. If it does not, the board pauses the head for 30 minutes with both lights flashing, then tries again. After 100 misses in a row it stops. A closed supply valve, a blocked filter, a clogged inlet screen, a dump valve stuck open, or a float that sticks are the usual reasons.
Koolaire ice machine display
What to do when SL#1 + SL#2 shows on the ice machineKind of codeWater supply
The water side came up short: the trough did not fill in the time allowed, the float or level probe never saw water, or water kept flowing when the inlet valve should have closed. A supply valve left partly shut, a clogged filter cartridge, low building pressure or a sticking inlet valve are the usual causes. Opening the valve fully and fitting a fresh filter clears the simple cases; a valve that hums without passing water is a visit.
Usually leads toIce machine water valve and filter repair
The inlet valve, filter, sump float or level probe and supply line, tested and replaced when water arrives short, dirty or nonstop.
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.
MakeKoolaire
KoolAire ice machine service begins with a look at the air filter, the condenser fins and the water trough.
SourceKoolAire K, KP and KT modular ice machines technician's handbook (Part Number 000018624 Rev 00)
KoolAire K, KP and KT Kube heads with the toggle-switch control board. Boards with software revision 3.2 and later cap the freeze at 35 minutes and the harvest at 7 minutes; earlier boards use 60 and 3.5 minutes. The first cycle after a manual start or a full bin is exempt from this check.
Before you book,
in this order.
Each step comes from Koolaire's own guidance for SL#1 + SL#2 on its ice machines. Follow it to the end: the last card says whether this is a visit.
Check that the water supply valve to the head is fully open and that the filter cartridge is not overdue.
Look in the trough: if water drains away as fast as it enters, the dump valve may be stuck open.
Wait for the 30-minute pause to end; if both lights keep flashing on the next fill, book a visit.
Still there?
It usually turns into ice machine water valve and filter repair. Book with the code and the model number.
What not to do
Two lights at once are not two problems; together they are a separate, water-side limit. It also does not mean the head has lost power, since the board is clearly awake.
What you may
notice with it.
The ice machine problems SL#1 + SL#2 tends to arrive with. Answer these at the ice machine before anyone is booked.
All problems
Where SL#1 + SL#2 usually leads
Ice machine water valve and filter repair.
Koolaire
ice machines.
KoolAire ice machine service begins with a look at the air filter, the condenser fins and the water trough.
Koolaire ice machine repairMore Koolaire codes
Water supply 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.
In Koolaire's own words
Service limit 3 is indicated by both SL#1 & SL#2 flashing.
Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. KoolAire K, KP and KT Kube heads with the toggle-switch control board. Boards with software revision 3.2 and later cap the freeze at 35 minutes and the harvest at 7 minutes; earlier boards use 60 and 3.5 minutes. The first cycle after a manual start or a full bin is exempt from this check.
Koolaire SL#1 + SL#2 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 SL#1 + SL#2.
Can I clear SL#1 + SL#2 myself?
My KoolAire flashes both lights, then restarts by itself. Is that normal?
Can a new water filter cause both KoolAire lights to flash?
Why do both lights on my KoolAire blink three times at start-up?
Back to your everyday
Still showing SL#1 + SL#2?
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.