Display shows E8 and the unit may not maintain separate temperatures in dual‑zone models

Safety: Disconnect power before accessing internal panels or control boards.

• Identify model type: Confirm that your GE Profile wine cooler is a dual‑zone model (separate upper and lower temperature settings).
• Locate divider sensor: On many dual‑zone units, a thermistor is mounted near the divider or air channel between zones. Remove interior trim or panels as needed to access it.
• Inspect wiring: Follow the sensor and communication harnesses from the divider area to the main and secondary control boards. Look for loose plugs or damaged wires.
• Test divider thermistor: With the unit unplugged, disconnect the thermistor and measure resistance. Compare to GE’s spec for the approximate temperature. Replace if readings are abnormal.
• Check secondary board: Some models use a secondary control board for the second zone. Inspect for burnt components and ensure all connectors are fully seated.
• Replace faulty parts: Replace the divider thermistor or secondary control board as needed. After replacement, restore power and verify that E8 clears and both zones respond to setpoints.