Dometic
Dual-Zone Separation Failure
Temperature between upper and lower zones is not separated; both zones show similar temperatures despite different setpoints.
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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 internal partition fan or damper, air leak between zones, incorrect sensor placement, control board not regulating zones independently
How to Fix / Troubleshooting
Safety: Unplug the unit before removing interior panels between zones.
Steps:
- Inspect partition: Remove the partition cover between zones and check for missing or damaged insulation.
- Check zone fan/damper: Some Dometic dual-zone models use a zone circulation fan or damper. Verify it operates and is not stuck open or closed.
- Sensor placement: Ensure upper and lower zone sensors are in their correct positions and not swapped.
- Control board: If hardware is correct but zones still track together, the zone control PCB or main board may not be regulating independently and may need replacement.
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Repair Difficulty
Hard
4/5
Required Part
Zone Circulation Fan
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