Della Marta Dual-Zone Airflow or Sensor Misrouting

Dual-zone wine cooler shows large temperature difference between zones or zones seem reversed.

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.

Possible Causes

Upper and lower sensors cross-connected, Blocked airflow between zones, Failed zone damper (if equipped), Control board zone mapping error

Safety: Unplug the unit before accessing internal wiring.

Check airflow: Ensure vents between zones are not blocked by shelves or bottles.
Inspect sensor wiring: At the dual-zone control PCB, verify that the upper zone NTC sensor and lower zone NTC sensor are connected to the correct labeled terminals.
Correct wiring: If sensors are swapped, reconnect them to the proper terminals.
Control board replacement: If wiring is correct but zones still behave incorrectly, replace the dual-zone main control PCB.

Hard 4/5

Dual-Zone Main Control PCB

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