Freezer shows E1 and temperature reading is inaccurate or dashes are displayed

Safety first: Disconnect power before accessing internal components.

Steps to diagnose:

• Locate the cabinet temperature sensor (NTC). On most Ocean freezers it is clipped to the evaporator cover or mounted on the inner liner behind a small plastic cover.
• Remove the interior shelves and baskets to access the rear inner panel.
• Remove the plastic cover and gently pull out the sensor probe.
• Inspect the sensor and wiring for cuts, corrosion, or loose connections at the plug going to the main control board.
• Using a multimeter (if available), measure the resistance of the NTC at room temperature; compare to Ocean’s typical NTC spec (commonly around 5–10 kΩ at 25°C). An open circuit or near-zero resistance indicates a bad sensor.
• Reseat the connector at the control board. If the wiring is intact but the error persists, replace the cabinet temperature sensor.
• If a new sensor does not clear the E1 code, the main control board may have a faulty sensor input and should be replaced.