E12
Hisense
Communication Error Between Main PCB and Inverter/Interface
Washer-dryer displays E12 and may stop, often associated with communication between control boards
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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 wiring harness between boards, Faulty main control board, Defective motor inverter board (if separate), Electrical noise or surge damage
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing any control boards.
- Power reset: Unplug the unit for at least 10 minutes to discharge capacitors, then plug back in and try again. Temporary glitches can sometimes be cleared.
- Inspect wiring: Remove the top cover and locate the main PCB and any separate inverter or interface boards. Check all multi-pin connectors for secure fit and signs of corrosion or burning.
- Check for moisture: Look for signs of water ingress around the control area. If moisture is present, dry thoroughly and identify the source of the leak (door seal, dispenser, etc.).
- Board replacement: If wiring is intact and E12 persists, one of the boards is likely faulty. Replacement of the Hisense main control board or inverter board should be performed by a qualified technician due to the need for correct part matching and safe handling.
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Repair Difficulty
Professional Required
5/5
Required Part
Hisense Main Control Board (PCB)
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