Easee One: Smart Charging Issue and OCPP Error - Diagnosis

⚠️ SAFETY WARNING / ELECTRICAL RISK. This device is directly connected to the 230V/400V electrical grid. Before any physical inspection or removal of the charging module (Chargeberry), it is mandatory to disconnect the power supply by operating the dedicated miniature circuit breaker/residual current device in the main electrical panel. Any electrical work involves a serious risk of electric shock and must be performed exclusively by a qualified technician. ReeFix provides this diagnosis for informational purposes only.

REQUIRED TOOLS

For an effective diagnosis, especially in more advanced stages, the following are required:

• Smartphone or PC with access to the Easee app (or Easee Installer portal).
• Login credentials for the Charge Point Operator (CPO) portal and/or the HEMS (Home Energy Management System).
• Network tester (for WiFi signal and connectivity).
• A Portable 4G LTE Router for isolated connectivity tests (recommended for technicians).
• EV Simulator for charging station testing (for advanced technician verifications).

PHASE 1: OCPP Configuration and Software Synchronization Assessment

This phase focuses on software and configuration issues, which account for most cases of smart charging failure or OCPP errors.

1.1. OCPP configuration error or invalid credentials (Probability: 45%)

Key signals: The Easee One does not start scheduled charging via app or external backend. The wallbox appears "Disconnected" or "Offline" in the Easee portal or CPO logs, even though manual charging works. This indicates a block in authenticated communication with the OCPP server.

Analysis: The OCPP protocol requires a secure "handshake" and authentication. If the endpoint URL, Charge Point ID, or authentication credentials are incorrect, the connection will not be established. This is a common error during initial setup or CPO change.

Quick checks (for experienced user/technician):

• Access the Easee portal (or Installer app) and check the OCPP operator parameters.
• Verify the accuracy of the endpoint URL (e.g., wss://ocpp.yourserver.com/) and the Charge Point ID.
• Regenerate or reconfirm authentication credentials (password) with the CPO and re-enter them.
• Check the OCPP server logs for errors such as "Bad Credentials" or "Connection Rejected."

Preliminary operational decision: If the OCPP parameters are incorrect or the credentials are invalid, correcting this data via the Easee portal or Installer app is the first step. This operation requires specific technical skills and access to CPO credentials.

1.2. Firmware/software conflict or time synchronization issues (Probability: 15%)

Key signals: The wallbox is connected to the OCPP backend, but smart charging commands are rejected or not executed. CPO logs may show errors such as "CallError" or "Rejected" in response to SetChargingProfile commands. Smart scheduling via the native Easee app may conflict with a third-party service.

Analysis: Outdated or corrupted firmware can destabilize the wallbox's OCPP client. Time synchronization (NTP) is crucial for validating OCPP messages and TLS certificates; desynchronization can cause secure communication failures. Conflicts can also arise with HEMS systems or third-party services that send unsupported charging profiles or profiles that conflict with Easee settings.

Quick checks (for experienced user/technician):

• Check the firmware version via the Easee Installer app and update to the latest stable release.
• Ensure the wallbox can reach an NTP (Network Time Protocol) server for time synchronization.
• Temporarily disable any integrations with HEMS or third-party services to isolate potential conflicts.
• Check that the Easee app does not have active local schedules that might override those of the external CPO.

Preliminary operational decision: If firmware issues or software conflicts are suspected, proceed with firmware updates and temporary deactivation of external services. This operation can be performed by an experienced user but requires attention to avoid further complications.

PHASE 2: Network Connectivity Stability Assessment

This phase addresses issues related to the quality and stability of the internet connection, often more complex to diagnose without specific tools.

2.1. Network connectivity instability (WiFi/Cellular) or firewall blocks (Probability: 35%)

Key signals: The Easee One disconnects and reconnects to the backend intermittently. Smart charging works sporadically or with significant delays. Sometimes the wallbox appears online, other times offline. This often happens when the radio signal is weak or the home network has restrictive configurations (firewall, DNS).

Analysis: The Easee One requires a stable internet connection (integrated eSIM or WiFi) to communicate via secure WebSockets (wss://). A weak signal (e.g., RSSI worse than -90 dBm for cellular or unstable WiFi) can cause TCP/IP socket interruptions, preventing the exchange of critical messages. Firewalls or routers with incorrectly configured DNS can also block traffic on ports 443 (HTTPS/WSS) or other CPO-specific ports.

Quick checks (for technician):

• Monitor the RSSI value of the connection (2.4 GHz WiFi or cellular) via the Easee Installer app. A low value (< -70 dBm for WiFi, < -90 dBm for cellular) indicates a weak signal.
• Perform a continuous ping test to the OCPP backend URL from a device connected to the same network to assess latency and packet loss.
• Check router/firewall settings: ensure that TCP ports 443 (or CPO-specific ones) are open for outbound traffic and that there are no DNS blocks preventing resolution of the OCPP server address.
• Test connectivity using a 4G/5G mobile hotspot to isolate home network issues.
• Installation of a WiFi repeater or optimization of cellular coverage may be necessary.

Safety notes: Any intervention on network configuration or firmware must be performed with caution. Errors can compromise the security and functionality of the device.

Preliminary operational decision: Network connectivity issues require in-depth diagnosis with specific tools and advanced skills. It is strongly recommended to contact a network specialist for resolution. Only in extremely rare cases, and after ruling out all other causes, should the replacement of a hardware component such as the Easee Chargeberry Control Unit be considered.

FINAL VERIFICATION

Operational decisions should be guided by the probability of causes and the complexity of the intervention.

1. If the Easee One is always "Disconnected" or does not connect to the OCPP backend at all (Cause 1.1, 45%):

• Repair yourself: NO. Requires specific OCPP configuration skills and access to the Easee Installer portal.
• Contact a technician: YES. A qualified technician is essential to verify and correct OCPP parameters, credentials, and server accessibility. This is the fastest and most effective approach.
• Replace the device: NO. It is almost certainly a configuration issue, not hardware.

2. If the Easee One connects and disconnects intermittently, or smart charging is unreliable (Cause 2.1, 35%):

• Repair yourself: NO. Requires advanced network skills, diagnostic tools (WiFi tester, firewall analysis, ping).
• Contact a technician: YES. A professional will assess signal quality (WiFi/cellular), router/firewall settings, and DNS. Network optimization or repeater installation may be necessary.
• Replace the device: NO. The problem is almost certainly related to network infrastructure, not the wallbox itself.

3. If the Easee One is connected, but smart commands are rejected or there are conflicts (Cause 1.2, 15%):

• Repair yourself: MAYBE. If you have experience with firmware updates and smart app management, you can try updating the firmware and disabling third-party integrations.
• Contact a technician: YES. If basic software checks do not resolve the issue, a technician can diagnose more complex conflicts or time synchronization problems.
• Replace the device: NO. This is a software/configuration issue, not hardware.

Operational decision: If the Easee One does not connect to the CPO or smart charging is unstable, contact a technician for an in-depth analysis of the OCPP configuration and network connectivity. If the problem persists after basic software checks and firmware updates, consider a more in-depth analysis by Easee support.