E7
Pure Enrichment
Internal Communication or Control Board Fault
Pure Enrichment dehumidifier displays E7 and will not start or shuts down shortly after starting.
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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
Corrupted control board firmware, Loose ribbon cable between display board and main PCB, Failed display/control PCB, Power surge damage to electronics
How to Fix / Troubleshooting
Safety: Unplug the unit before opening the control panel. Avoid static discharge to circuit boards.
- Power cycle: Unplug the dehumidifier for 15 minutes, then plug it back in. Try operating in a different outlet to rule out power issues.
- Inspect control connections: Remove the top/control panel cover. Check the ribbon cable or harness between the display board and main control board. Reseat connectors firmly.
- Check for moisture: Look for signs of water intrusion or condensation on the control board. If present, allow the unit to dry completely in a warm, dry room for 24 hours before retesting.
- Surge protection: If E7 appeared after a storm or power event, the board may be damaged. Future use should be through a surge protector.
- Board replacement: If E7 persists, replace the main control PCB (and display PCB if separate) with Pure Enrichment–specified parts. Label and transfer all connectors one by one to avoid miswiring.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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