Sub-Zero Ice Makers WATER-LEAK Error: Water Pooling Under or Behind Unit
Sub-Zero ice maker water-leak error: Overview Sub-Zero ice maker water-leak error — this page documents the causes, observable symptoms, safe checks, and repair-cost expectations drawn from Sub-Zero owner support references and factory-certified service records. Read the sections below for the complete picture. What Does Sub-Zero Ice Makers WATER-LEAK Mean? WATER-LEAK describes the condition on Sub-Zero […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Stop using the ice maker and shut off its water supply immediately. A water leak left running will cause progressive damage to the floor, subfloor, and adjacent cabinetry. Do not restore operation until the source of the leak is identified and repaired.
Can I reset the code?
No. A water leak is a physical failure of a fitting, component, or drain line. A power reset cannot stop or repair a leak.
When to stop immediately?
Stop if you notice: Shut off water supply immediately upon discovering the leak, Do not restore power until the leak source is identified.
Symptoms You May Notice
Water puddle on the floor in front of or behind the ice maker
A visible puddle of water appears on the kitchen floor near the ice maker, or the toe-kick area shows signs of water damage.
Water visible on the cabinet base inside the unit
Opening the unit reveals water on the interior base pan — not from ice melting, but from a leak within the water circuit.
Cabinet or flooring adjacent to the unit shows moisture damage
The cabinet sides, the adjacent cabinetry, or the flooring immediately around the unit show signs of repeated moisture exposure: warping, discoloration, or mold.
Water stain or buckling on flooring or cabinet base beneath the unit
A persistent leak eventually warps wood flooring or cabinet bases, or discolours tile grout directly under the unit footprint.
Possible Causes
Failed water inlet fitting or supply line connection
The compression fitting or push-fit connection where the supply line meets the ice maker body has failed or loosened, allowing water to drip from the connection during each fill cycle.
DIY PossibleCracked water reservoir or harvest tray
The reservoir or harvest tray that holds water for freezing has developed a crack, allowing water to escape the ice-making circuit.
Requires ProfessionalBlocked or frozen drain line
The drain that removes melt water and overflow from the ice maker has become blocked or frozen. Water that cannot drain backs up and overflows the drain pan onto the cabinet base and floor.
Requires ProfessionalSafe Checks You Can Do
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1
Shut off the water supply and identify the leak source
Turn off the water supply shut-off valve for the ice maker immediately. Pull the unit out from its installation space (with the power off) and look at the back of the unit and the floor beneath it. Try to identify whether the water source is the supply line connection, the drain line connection, or somewhere inside the unit cabinet.
Water at the supply-line connection is the most owner-serviceable leak — tightening or replacing the compression fitting resolves it. Water coming from inside the unit or the drain area requires professional diagnosis.
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2
Check the drain line for blockage
Locate the ice maker drain line — typically a small flexible hose that connects to a household drain or a condensate pump. Confirm the drain line is not kinked, not elevated above the drain connection, and is not clogged with scale or debris. Pour a small amount of water into the drain pan by hand and observe whether it flows freely away.
A drain line that is kinked or has a high point in its run will trap water that then backs up into the unit. Re-routing the drain line to a continuous downward slope resolves this type of leak without any parts replacement.
When to Call a Professional
Contact a qualified technician if:
- Leak source is inside the unit cabinet — not at the supply or drain connections
- Water appears even with the supply shut off — reservoir or tray is retaining water
- Adjacent cabinet walls show swelling or mold from repeated moisture exposure
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
Ice Makers Repair Service Schedule Appointment