Scotsman Ice Ice Maker Error ERR-3

⚡ Quick Answer: The Scotsman Ice ice maker ERR-3 indicates a water fill issue where the machine is unable to detect sufficient water supply. This error often results ... ✅ DIY Fixable

What Does Error ERR-3 Mean?

The Scotsman Ice ice maker ERR-3 indicates a water fill issue where the machine is unable to detect sufficient water supply. This error often results in the ice maker stopping mid-cycle, producing little to no ice, and may generate unusual sounds. Common causes include an insufficient water supply, dirty water sensors, or faulty water level sensor components. Regular maintenance and checks can often resolve this issue.

Common Symptoms:

  • Machine showing error code ‘3’ on display or blinking pattern corresponding to Code 3
  • Ice maker stops mid-cycle
  • No ice production or intermittent ice production
  • Water not entering the reservoir or being detected

Possible Causes

  • Insufficient water supply or no water detected in the reservoir (medium)
  • Dirty or contaminated water sensors preventing proper water detection (medium)
  • Faulty water level sensor or damaged wiring (medium)

How to Fix Error ERR-3

DIY Fix Check and restore water supply

  1. Ensure the water supply valve serving the ice maker is open.
  2. Check that the water line is properly connected and not kinked or blocked.
  3. Verify that incoming water pressure is within the manufacturer’s recommended range.

DIY Fix Clean water sensors and check basic connections

  1. Turn off and unplug the ice machine.
  2. Locate the water level sensors in the reservoir (consult model manual).
  3. Gently clean sensors to remove scale, mineral buildup, or debris.
  4. Reconnect and ensure wiring harnesses are secure, then power up the unit to test.

Technician Only Inspect, test, and replace faulty water sensor components

  1. Use a multimeter or diagnostic tool to test sensor continuity and performance.
  2. Inspect wiring harnesses for breaks, shorts, or corrosion.
  3. Replace the water level sensor if tests indicate failure.
  4. Verify machine operation after sensor replacement.

Parts needed: Water level sensor, Sensor wiring harness

🛑 When to Call a Pro:
  • If water supply and sensor cleaning do not resolve the issue after basic checks.
  • If wiring or sensor component testing indicates failure requiring replacement.
  • If machine continues to shut down with Code 3 despite proper water supply.

Technical Specifications

wattage 20W
component Water Inlet Valve
resistance 3-5 ohms
part_number Scotsman 12-1940-21
voltage_rating 120V AC

Common Questions

What does ERR-3 error mean on Scotsman Ice ice maker?

ERR-3 indicates a water fill issue where the machine can't detect enough water, stopping ice production.

Can I fix Scotsman Ice ice maker ERR-3 error myself?

Yes, you can check the water supply, clean water sensors, and ensure connections are secure.

How much does it cost to fix ERR-3 error?

Repair costs typically range from $80 to $250, depending on the model and region.

When should I call a technician for ERR-3?

Call a technician if basic checks don’t resolve the issue or if sensor testing indicates failure.

Sources & References

Data last verified: 2026-07-01

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