E6
Luxaire
Indoor/Outdoor Mismatch or Configuration Error
Luxaire air conditioner displays E6; system may run but with poor temperature control or may shut down intermittently.
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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
Incorrect DIP switch or jumper settings on indoor PCB, Wrong tonnage configuration between Luxaire indoor and outdoor units, Faulty configuration memory on control board
How to Fix / Troubleshooting
Safety: Disconnect power before opening the control compartment.
- Check model compatibility: Compare the model numbers of the Luxaire air handler and condenser to the compatibility chart in the installation manual. Mismatched capacities or series can trigger E6.
- Verify DIP switch settings: On the indoor control board, locate the DIP switches or jumpers used to set airflow (CFM/ton), tonnage, and staging. Match them to the Luxaire installation instructions for your specific model and tonnage.
- Reset configuration: Some Luxaire boards allow a factory reset via a button or power‑up sequence. Follow the manual to reset and then re‑enter correct settings.
- Professional re‑commissioning: If E6 remains, an HVAC technician should connect diagnostic tools, update firmware if applicable, or replace the misconfigured board.
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Repair Difficulty
Hard
4/5
Required Part
Indoor Control Board
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