Whirlpool Ice Maker LO Error: Low temperature alert
If you are dealing with a whirlpool ice maker lo error, this guide will help you understand the cause and find the right solution quickly. What Does Ice Maker Error Code LO Mean? The LO code on a Whirlpool ice maker indicates that the internal or ambient temperature has dropped below the minimum operating threshold. […]
Some Steps
DIY Fixable
from $175
Typical Repair Cost
1-2 hours
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. The ice maker is not producing usable ice during a LO condition. Once ambient temperature is corrected and the unit is reset, it can return to normal operation safely.
Can I reset the code?
Yes. Power cycling after resolving the low-temperature condition clears the LO code. The unit will restart its ice production cycle automatically.
When to stop immediately?
Stop if you notice: Stop operating the ice maker in ambient temperatures below 55°F — continued use in these conditions can damage the water valve and internal components., Discontinue use if LO appears in a properly heated space, as this indicates a sensor or board fault that requires diagnosis before the unit is reliable..
Symptoms You May Notice
Ice production slows or halts in cold ambient conditions
The ice maker stops completing cycles because the fill water freezes in the supply line before it can reach the ice tray, or the control logic suspends operation.
Ice cubes fuse together in the storage bin
Excessively cold temperatures cause already-formed ice cubes to weld together into a solid mass in the storage bin, making dispensing impossible.
Water inlet valve fails to open
The solenoid water inlet valve may stick closed if the ambient temperature around it drops near or below freezing, preventing water from entering the ice maker.
Unit runs but no water enters the tray
The ice maker goes through its cycle motion but the ice tray remains empty because the water line or valve has frozen solid.
Possible Causes
Ambient room temperature below minimum rating
The room or installation space where the ice maker is located has dropped below 55°F, outside the unit's designed operating range.
DIY PossibleFrozen water inlet line or valve
The water supply line or inlet valve body has frozen due to extremely low temperatures, blocking water flow into the ice maker.
DIY PossibleFaulty temperature sensor reporting incorrect low reading
The temperature sensor is malfunctioning and sending a false low-temperature reading to the control board even though the actual temperature is within range.
Requires ProfessionalSafe Checks You Can Do
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1
Check ambient installation temperature
Use a room thermometer to verify the temperature in the area where the ice maker is installed. The ambient temperature must be between 55°F and 110°F for proper operation.
If the ice maker is in a garage, consider a portable heater nearby in winter months or relocate the unit to a conditioned space.
Tools required -
2
Inspect the water inlet line for freezing
Trace the water supply line from the wall connection to the ice maker. Feel for sections that are hard, brittle, or have visible ice on the outside — these indicate a frozen line.
If the line has frozen, allow it to thaw naturally at room temperature before attempting to use the ice maker — never apply direct heat to plastic water lines.
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3
Power cycle after temperature is restored
Once the ambient temperature is within range, unplug the unit for 3 minutes and plug it back in to reset the LO alert and restart the ice production cycle.
After a power cycle, allow up to 24 hours for the ice maker to produce the first batch of ice, especially if the water line was partially frozen.
When to Call a Professional
Contact a qualified technician if:
- LO code appears consistently in a room with ambient temperature verified to be above 60°F, pointing to a faulty temperature sensor or control board.
- Water inlet valve is visibly cracked or damaged from freezing, requiring professional replacement to restore safe water-tight operation.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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