E6
NewAir
Communication Error Between Display Board and Main Control PCB
Display shows E6 and unit may not respond to remote or control inputs properly.
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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
Loose communication harness, corroded connectors, damaged display PCB, failed main control PCB
How to Fix / Troubleshooting
Safety: Unplug the air conditioner before removing any control panels.
Steps:
- Access control area: Remove the front bezel or top cover to expose the display/control PCB and the main control PCB (often in a side or rear compartment).
- Inspect harness: Locate the multi-wire communication cable between the display board and main board. Check for pinched, cut, or burned wires.
- Reseat connectors: Unplug the harness at both ends, inspect for corrosion or bent pins, then firmly reconnect.
- Check for moisture: Look for signs of condensation or water intrusion around the control panel. Dry thoroughly and correct any gasket or seal issues.
- Board substitution: If wiring is intact and E6 persists, replace the display/control PCB first (usually easier and cheaper). If that does not resolve the issue, the main control PCB may also need replacement.
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Repair Difficulty
Medium
3/5
Required Part
Display / Control PCB
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