Ice maker displays EC04 or service code 04 and stops with ice stuck on the evaporator plate.

Safety: Disconnect power before servicing. Hot gas lines can be very hot during operation; allow time to cool.

Steps to address EC04:

• 1. Observe harvest behavior: If ice remains frozen to the evaporator and does not release during harvest, the hot gas valve may not be opening.
• 2. Access the valve: Remove the front or side panel to locate the hot gas solenoid valve in the sealed system piping near the compressor.
• 3. Inspect wiring: Check the valve coil wiring and connector for damage or loose connections. Reseat the connector.
• 4. Test the coil: With power off, measure the coil resistance with a multimeter. An open coil indicates a failed valve coil that must be replaced.
• 5. Replace valve coil or assembly: If the coil is removable, replace just the coil. If the valve body is stuck or leaking, the entire valve must be replaced by a certified refrigeration technician, as it involves opening the sealed system.
• 6. Control board: If the valve and wiring are good but it never energizes during harvest, the control board output may be faulty and should be professionally diagnosed.