E7
La Sommeliere Upper/Lower Zone Temperature Sensor Fault

Dual-zone La Sommeliere wine cooler shows E7 and one zone does not regulate temperature correctly.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Failed NTC sensor in upper or lower compartment, Sensor connector swapped or disconnected, Damaged harness between zones and main PCB, Control board channel failure

How to Fix / Troubleshooting

Safety: Unplug the cooler before removing any internal panels.

Steps:

  • 1. Identify affected zone: Check which zone (upper or lower) is not cooling correctly or shows unrealistic temperatures.
  • 2. Locate zone sensor: Each zone typically has its own NTC sensor mounted on the rear wall or near the evaporator cover. Remove shelves and the inner rear panel for the affected zone.
  • 3. Inspect sensor and wiring: Look for a small probe with two wires. Check for damage, corrosion, or a loose connector where it joins the main harness.
  • 4. Test resistance: Measure the sensor resistance at the current compartment temperature and compare to expected NTC values. If open or shorted, the sensor is faulty.
  • 5. Replace sensor: Install a new La Sommeliere zone temperature sensor (upper or lower). Route the cable as originally installed and secure it away from moving parts.
  • 6. Check harness routing: On some models, the harness passes between zones; ensure it is not pinched by panels or shelves.
  • 7. Reassemble and test: Restore power, clear the error by power cycling if needed, and verify both zones reach and maintain their set temperatures.

When to seek help: If both sensors test good but E7 persists, the main control board may have a defective sensor input channel.

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Repair Difficulty

Medium 3/5

Required Part

Zone Temperature Sensor
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