Hisense ice maker will not power on, display is blank or shows E1 shortly after startup.

Safety first: Unplug the Hisense ice maker from the wall outlet before removing any panels. Do not work on live circuits.

• Check power source: Verify the outlet has 110–120V (or local rated voltage) using a multimeter. Test the outlet with another appliance.
• Inspect power cord: Look for cuts, burns, or kinks in the Hisense power cord. Replace the cord if damaged.
• Access the control compartment: Remove the rear or top service panel (depending on model) using a screwdriver. Locate the main control PCB (usually behind the display or near the compressor compartment).
• Check wiring harness: Ensure all multi-pin connectors are fully seated on the main PCB. Look for burnt pins, corrosion, or broken wires. Reseat each connector firmly.
• Inspect the board: Look for burnt components, bulged capacitors, or darkened areas on the PCB. If present, the board is likely defective.
• Reset the unit: With the unit unplugged, press and hold the power button for 10 seconds to discharge residual power, then reconnect power and see if E1 clears.
• Replace main control PCB: If wiring and power are good but E1 persists, order the correct Hisense main control board by model number and replace it, transferring each connector one at a time to avoid miswiring.