Scotsman Ice Ice Maker Error ERR-4

⚡ Quick Answer: The Scotsman ice maker ERR-4 error indicates a malfunction in the water fill system, leading to issues with ice production. Symptoms include the ice m... ✅ DIY Fixable

What Does Error ERR-4 Mean?

The Scotsman ice maker ERR-4 error indicates a malfunction in the water fill system, leading to issues with ice production. Symptoms include the ice maker failing to produce ice or reduced output, along with a blinking error code on the control panel. Common causes involve water supply restrictions due to blockages in the filter, inlet valve, or water line, which hinder proper water delivery to the ice maker.

Common Symptoms:

  • Ice maker not producing ice or reduced ice production
  • Error code 4 displayed on control panel
  • Potential issues with water delivery or sensing

Possible Causes

  • Water supply restriction (filter, inlet valve, or line blockage) (medium)

How to Fix Error ERR-4

DIY Fix Check water supply and filter

  1. Turn off the ice maker and unplug it.
  2. Inspect and replace the water filter if clogged or due for a change.
  3. Check the water supply line and inlet valve for kinks, blockages, or leaks.
  4. Restore power and see if the error clears.

Technician Only Inspect water delivery and sensor systems

  1. Verify proper water pressure at the inlet supply.
  2. Test and clean or replace the water inlet valve if blocked or malfunctioning.
  3. Inspect water level sensors and associated wiring for faults.
  4. Use diagnostic tools to confirm sensor functionality and error persistence.

Parts needed: Water filter, Water inlet valve, Water line tubing, Water level or flow sensors

🛑 When to Call a Pro:
  • If the error persists after water supply and filter maintenance.
  • If you detect a leak from internal components or cannot safely access the water inlet or sensors.
  • If sensor or control board faults are suspected and require specialized diagnostics.

Technical Specifications

wattage 30W
component Water Inlet Valve
resistance 2-3 ohms
part_number Scotsman 12-1959-21
voltage_rating 120V AC

Common Questions

What does ERR-4 error mean on Scotsman ice ice maker?

ERR-4 indicates a malfunction in the water fill system, causing ice production issues.

Can I fix Scotsman ice ice maker ERR-4 error myself?

Yes, check the water supply, replace clogged filters, and inspect for blockages.

How much does it cost to fix ERR-4 error?

Repair costs range from $50 to $300 depending on parts and technician rates.

When should I call a technician for ERR-4?

Call if the error persists after maintenance, or if leaks or sensor faults are suspected.

Data last verified: 2026-07-01

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