Kenmore Ice Maker LO Error: Low Water Temperature / Freeze-up Detected
The kenmore ice maker lo error is a fault signal from the control board — this guide walks through what it means, common causes, and safe diagnostic steps. What Does Kenmore Ice Maker Error Code LO Mean? LO on a Kenmore Elite 89183 or 89189 stand-alone under-counter ice maker stands for Low Temperature. Like the […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. LO is a protective hold. If the cause is ambient temperature or water supply temperature, correcting the installation environment allows normal operation to resume. If the cause is a frozen water system, thawing resolves it. Do not force the machine to operate below its rated temperature range — water pump and valve damage can result.
Can I reset the code?
Yes. LO clears automatically when temperatures return within the operating window on Kenmore Elite 89183/89189 units. Moving the unit to a warmer location, allowing it to thaw, and supplying adequately warm water allows the machine to resume production without any manual reset sequence.
When to stop immediately?
Stop if you notice: LO persists after the unit has been at room temperature for 2 hours and is supplied with water above 50 F, Water pump runs but produces no flow to the evaporator — indicating a frozen or blocked distribution line.
Symptoms You May Notice
LO code displayed; machine stops after initiating a freeze cycle
The control panel shows LO during or immediately after a freeze cycle begins. The board interprets the abnormally low temperature reading as a freeze-up risk and shuts down production before ice cubes can be harvested.
Water pump runs but little or no water reaches the evaporator plate
A partial freeze-up in the water distribution lines or reservoir can restrict or block water flow while the pump continues to run, causing the evaporator plate to read an abnormally low temperature as insufficient water is spread across it.
Ambient temperature near or below 50 F at the installation site
LO commonly occurs when the Kenmore Elite 89183/89189 is installed in a cold garage or basement where ambient temperatures fall below the minimum 50 F rating, causing the water reservoir to approach freezing conditions.
Frost or thin ice visible on the water reservoir walls
Opening the unit reveals a rim of frost or a thin layer of ice forming on the inside surfaces of the water reservoir or along the distribution tubes, confirming that water-side temperatures have dropped close to freezing before cycle completion.
Possible Causes
Ambient installation temperature below 50 F
Kenmore Elite 89xxx stand-alone units require installation environments at or above 50 F. A cold garage, unheated basement, or outdoor installation in cool weather brings the water reservoir temperature below the LO threshold and triggers the fault.
DIY PossibleInlet water temperature below 40 F
Water supplied directly from an outdoor line or an extremely cold well that arrives at the unit below 40 F (measured at the supply connection) will cause the reservoir thermistor to read LO within seconds of the freeze cycle beginning.
DIY PossibleFrozen or partially blocked water distribution system
A prior LO event or a low-ambient-temperature period may have partially frozen the water lines or reservoir, restricting water flow across the evaporator and causing abnormally rapid temperature drop readings that re-trigger LO on the next attempt.
DIY PossibleSafe Checks You Can Do
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1
Verify ambient temperature and relocate if necessary
Measure the ambient air temperature at the Kenmore Elite ice maker installation site using a standard thermometer. The owner manual specifies a minimum operating ambient of 50 F (10 C). If the measured temperature is at or below 55 F, relocate the unit to a warmer indoor space or wait for seasonal temperatures to rise before operating the machine.
Cold garages are the most common LO installation environment. The Kenmore Elite 89183 and 89189 are not designed for unheated outdoor or garage use in climates where temperatures fall below 50 F during any part of the year.
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2
Thaw the unit and flush the water system
If the ambient temperature is adequate but LO persists, unplug the unit, drain the reservoir by opening the drain plug at the base, and allow it to sit unplugged for 2 hours at room temperature to thaw any frozen water distribution lines. Reconnect the drain plug, fill with fresh water, and restore power to allow the machine to attempt a new freeze cycle.
After thawing, run one complete ice-making cycle and discard the first batch of cubes — thaw water may contain impurities from the line. If LO returns after thawing in a warm environment, the thermistor may be reading incorrectly low and should be tested as described in the E1 diagnostic steps.
When to Call a Professional
Contact a qualified technician if:
- Water distribution lines remain frozen or blocked after a 2-hour room-temperature thaw
- LO persists at ambient temperatures above 60 F with warm water supply — indicating a thermistor or control board fault
- Water pump motor is humming but not circulating water, suggesting internal mechanical failure
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