E10
Rolec
Network / Backend Communication Fault
Charger shows E10; app or display may indicate "GPRS/4G communication error" or "OCPP server unreachable" on smart Rolec units.
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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
Weak or no mobile signal at charger location, Faulty internal 4G/GPRS modem, Damaged or disconnected antenna, Incorrect APN or server settings in Rolec configuration
How to Fix / Troubleshooting
Safety first: Network faults do not usually affect electrical safety, but do not open the unit while powered unless you are competent and following Rolec procedures.
- Check signal strength: Use a mobile phone on the same network (if known) near the charger to gauge signal quality. Poor signal may require an external antenna or relocation.
- Inspect antenna: On models with an external antenna, ensure it is firmly connected and not physically damaged. For internal antennas, check the coaxial connector on the modem board (power isolated).
- Reboot the charger: Power‑cycle the unit to force the modem to re‑register on the network.
- Verify configuration: In the installer or admin interface, confirm that APN, username/password (if required), and backend server URL/port are correctly entered as per Rolec or your service provider.
- If communication still fails: The internal modem module may be defective. Replace the modem/communication board with a Rolec‑approved part or consult Rolec support.
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Repair Difficulty
Medium
3/5
Required Part
4G/GPRS modem module
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