Sub-Zero

Sub-Zero Ice Makers Error Codes

Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.

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ICE EC01
Ice maker shows EC01 or service code 01 and does not fill with water at the start of a cycle.
Water Inlet Valve / Fill Fault
ICE EC02
Ice maker displays EC02 or service code 02 and overfills the reservoir or leaks water into the bin.
Fill Level / Float Switch Fault
ICE EC03
Ice maker shows EC03 or service code 03 and shuts down shortly after starting a cycle.
High Pressure / Condenser Overheat Fault
ICE EC04
Ice maker displays EC04 or service code 04 and stops with ice stuck on the evaporator plate.
Hot Gas Valve / Defrost Fault
ICE EC05
Ice maker shows EC05 or service code 05 and shuts down with the compressor not running.
Compressor Start / Overload Fault
ICE EC06
Ice maker displays EC06 or service code 06 and stops with the fan not running inside the cabinet.
Evaporator Fan Motor Fault
ICE EC07
Ice maker shows EC07 or service code 07 and stops with the clean light flashing or cleaning cycle not completing.
Clean Cycle / Flow Sensor Fault
ICE EC08
Ice maker displays EC08 or service code 08 and indicates a door or bin switch error.
Bin Door / Safety Switch Fault
ICE EC09
Ice maker shows EC09 or service code 09 and indicates a low water or no water condition even when the reservoir appears full.
Water Level Sensor / Probe Fault
ICE EC10
Ice maker displays EC10 or service code 10 and will not start a freeze cycle.
Inlet Water Temperature / Thermistor Fault
ICE EC20
Ice maker shows EC20 or service code 20 and shuts down or runs briefly without making ice.
Bin Thermistor / Ice Level Sensor Fault
ICE EC30
Ice maker shows EC30 or service code 30 and shuts down or cycles erratically.
Ambient / Cabinet Thermistor Fault
ICE EC40
Ice maker displays EC40 or service code 40 and stops producing ice or produces very little ice.
Evaporator Thermistor Fault
ICE EC50
Ice maker displays EC50 or service code 50 and stops mid-cycle or fails to harvest ice.
Harvest / Ice Thickness Sensor Fault
ICE EC60
Ice maker shows EC60 or service code 60 and shuts down with water left on the evaporator plate.
Freeze Cycle Timeout / Evaporator Not Reaching Temperature
ICE EC70
Ice maker displays EC70 or service code 70 and will not start or complete a harvest cycle.
Harvest Motor / Drive Fault
ICE EC80
Ice maker shows EC80 or service code 80 and shuts down with water in the reservoir or sump.
Drain Pump / Drain Timeout Fault
ICE EC90
Ice maker displays EC90 or service code 90 and will not run. Control appears unresponsive or stuck in error.
Control Board / EEPROM Fault
Symptom
Control panel buttons do not respond or respond intermittently.
Unresponsive User Interface
Symptom
Ice appears cloudy or white instead of clear.
Cloudy Ice
Symptom
Ice cubes are hollow or have large holes in the center.
Hollow Ice Cubes
Symptom
Ice has a bad taste or odor, even though the ice maker appears to be working normally.
Contaminated Ice / Taste and Odor Issue
Symptom
Ice maker cycles on and off frequently without producing much ice.
Short Cycling
Symptom
Ice maker emits a burning smell or visible smoke during operation.
Electrical Overheating / Component Burnout
Symptom
Ice maker forms a large slab of ice that bridges across the bin instead of breaking into cubes.
Ice Bridging / Slab Not Breaking
Symptom
Ice maker is making loud grinding, squealing, or rattling noises during operation.
Abnormal Operating Noise
Symptom
Ice maker leaks water onto the floor from the front or bottom of the unit.
External Water Leak
Symptom
Ice maker not producing any ice at all; unit has power but bin remains empty.
No Ice Production
Symptom
Ice maker produces ice but then shuts off and will not restart until power is cycled.
Control Lockup / Software Hang
Symptom
Ice maker produces ice, but production is very slow and bin never fills to normal level.
Low Ice Production
Symptom
Ice maker runs but makes very small or thin ice cubes or slivers that melt quickly.
Thin Ice / Undersized Cube Formation
Symptom
Ice maker runs continuously and overfills the bin with ice, not shutting off when full.
Ice Level Control Failure
Symptom
Ice maker stops mid-cycle and restarts later, with long pauses and inconsistent operation.
Thermal Overload / Overheating Shutdown
Symptom
Ice maker trips the household circuit breaker when it starts or during operation.
Electrical Overload / Short Circuit
Symptom
Ice maker vibrates excessively or rattles the cabinetry during operation.
Excessive Vibration
Symptom
Ice maker will not power on; no lights or response from controls.
No Power / Dead Unit
Symptom
Ice melts quickly in the bin and clumps together.
Poor Ice Storage / Warm Bin
Symptom
Visible corrosion or rust on internal metal components and in the ice bin.
Corrosion / Rust Contamination
Symptom
Visible frost or ice buildup on the evaporator plate or nearby tubing.
Evaporator Frost / Ice Buildup
Symptom
Water accumulates inside the ice bin or under the evaporator instead of draining properly.
Internal Drainage Problem
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