Climadiff Single Zone Non-Responsive in Dual-Zone Unit

Dual-zone Climadiff wine cooler shows large temperature difference between zones, but one zone does not respond to setpoint changes.

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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

Zone-specific sensor failure, Stuck damper or air flap between zones, Faulty zone relay on PCB, Fan not circulating air to that zone

How to Fix / Troubleshooting

Safety: Disconnect power before opening internal panels.

  • Identify non-responsive zone: Compare setpoints and actual temperatures in both zones with a thermometer.
  • Check zone fan: Some Climadiff dual-zone models use a fan to move air between zones. Ensure the fan runs and is not obstructed.
  • Inspect damper/flap: If equipped, verify that any air damper between zones is not stuck closed.
  • Test zone sensor: Measure the NTC sensor for the affected zone and compare to the working zone's sensor.
  • PCB outputs: If sensors and fans are good, the main PCB may not be driving the zone correctly and may need replacement.
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Repair Difficulty

Hard 4/5

Required Part

Zone NTC Temperature Sensor
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