E21
Polestar
User Interface / Display Module Fault
Charger shows E21; display may indicate ‘Display Error’ or screen remains blank while LEDs work.
Advertisements
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.
Advertisements
Possible Causes
Failed LCD/OLED display module, Loose ribbon cable between display and main board, Water ingress into front panel, Faulty display driver on control board
How to Fix / Troubleshooting
Safety first: Turn off power before removing the front panel or display module.
- Check for condensation: Look for moisture behind the display window. If present, identify and fix any gasket or seal issues and allow the unit to dry.
- Reseat display cable: Remove the front panel and carefully reseat the ribbon or plug‑in cable connecting the display to the main control board.
- Inspect for damage: Examine the display PCB for cracks or corrosion. Replace the Polestar display module if damaged.
- Board driver fault: If a known‑good display does not function, the display driver on the main control board may be defective and require board replacement.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Polestar EVSE Display Module
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements