Safety first: Disconnect power before accessing the evaporator and heater area. Components may be hot immediately after a cycle.

Access evaporator assembly: Remove internal panels to expose the evaporator plate and any attached defrost heater or hot gas valve connections.
Inspect wiring: Look for burned or broken wires leading to the heater or defrost thermostat. Repair or replace damaged wiring using high-temperature-rated connectors.
Check defrost thermostat: The thermostat is usually clipped to the evaporator tubing. Ensure it is firmly attached and not physically damaged.
Visual heater check: If the heater element is cracked, warped, or shows burn spots, it is likely failed and should be replaced.
Replace faulty components: Install a new GE defrost heater or defrost thermostat as needed, following the original routing and mounting.
Test: Restore power and run a cycle. If E8 returns, the control board defrost circuit may be defective and require replacement by a technician.

GE ice maker displays E8 and ice production is halted; unit may be stuck in defrost or harvest.

Possible Causes