E7
Black+Decker
Mode Control or EEPROM Configuration Error
Unit shows E7 and may not start cooling; some modes may be disabled.
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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 memory, Incorrect mode configuration on main PCB, Failed EEPROM on main control board, Voltage spike damage to electronics
How to Fix / Troubleshooting
Safety: Unplug the unit before any disassembly. Electronic components are sensitive to static discharge.
- Hard reset: Unplug the air conditioner for at least 15 minutes. Press and hold the POWER button (if accessible) for 10 seconds while unplugged to discharge capacitors, then reconnect power.
- Check power quality: Ensure the unit is plugged directly into a properly grounded outlet (no undersized extension cords). Voltage drops or surges can corrupt control memory.
- Factory reset (if available): Consult the user manual for a factory reset procedure (often a combination of MODE and DOWN buttons held for several seconds). Perform the reset and see if E7 clears.
- Inspect control board: If accessible, remove the front panel and visually inspect the main PCB for burnt components or obvious damage.
- Board replacement: Persistent E7 usually indicates a failed main control board. Replacement requires matching the exact Black+Decker part number and is best done by a technician.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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