CHARGER_DISCONNECTED
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Applicable alarms (1)
CHARGER_DISCONNECTED
Likely outcomes — click to expand
Based on 0 missions where this alarm fired in the last 90 days as of 2026-10-13
Aggregated from fleet operations and refreshed daily. Individual outcomes may vary by site and configuration.
Background
Section titled “Background”This alarm occurs when the Dock charger service has been disconnected. EV4 docks on 2026.15 are not yet stable so this alarm is setting frequently. We’re working on fixes for this.
Troubleshooting Steps
Section titled “Troubleshooting Steps”graph TD
some-faults-are-intermittant["<small><b>Step 1</b></small><br/>Action: Some faults are intermittent. Restart..."]
did-the-alarm-clear{"<small><b>Step 2</b></small><br/>Question: Did the alarm clear?"}
did-the-alarm-clear-newer{"<small><b>Step 3</b></small><br/>Question: Did the alarm clear?"}
return-the-dock-to-service["<small><b>Step 4</b></small><br/>Action: Return the Dock to service."]
retry-charger-reset-then-replace-charger["<small><b>Step 5</b></small><br/>Action: If restarting the charger service is ..."]
allow-slow-charge-recovery-to-continue{"<small><b>Step 6</b></small><br/>Question: SLOW_CHARGE_RECOVERY_ACTIVE means t..."}
leave-aircraft-docked-for-slow-recovery["<small><b>Step 7</b></small><br/>Action: Leave the Aircraft docked and allow s..."]
troubleshoot-active-slow-charge-recovery["<small><b>Step 8</b></small><br/>Action: If the asset needs to be restored bef..."]
some-faults-are-intermittant --> did-the-alarm-clear
did-the-alarm-clear -->|Yes| return-the-dock-to-service
did-the-alarm-clear -->|No| retry-charger-reset-then-replace-charger
did-the-alarm-clear-newer -->|Yes| return-the-dock-to-service
did-the-alarm-clear-newer -->|No| allow-slow-charge-recovery-to-continue
allow-slow-charge-recovery-to-continue -->|Allow slow recovery to cont...| leave-aircraft-docked-for-slow-recovery
allow-slow-charge-recovery-to-continue -->|Troubleshoot now| troubleshoot-active-slow-charge-recovery
style some-faults-are-intermittant fill:#dcfce7,stroke:#22c55e,color:#14532d
style did-the-alarm-clear fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style did-the-alarm-clear-newer fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style return-the-dock-to-service fill:#dcfce7,stroke:#22c55e,color:#14532d
style retry-charger-reset-then-replace-charger fill:#dcfce7,stroke:#22c55e,color:#14532d
style allow-slow-charge-recovery-to-continue fill:#dbeafe,stroke:#3b82f6,color:#1e3a5f
style leave-aircraft-docked-for-slow-recovery fill:#dcfce7,stroke:#22c55e,color:#14532d
style troubleshoot-active-slow-charge-recovery fill:#dcfce7,stroke:#22c55e,color:#14532d Hover or focus a block to preview it. Select the block to keep the preview open.
1 action
Some faults are intermittent. Restart the charger service to see if it resolves the issue. For steps, see Restart Dock Charger Service.
2 question <=2026.15
Did the alarm clear?
3 question >=2026.15.1
Did the alarm clear?
4 action
Return the Dock to service.
5 action <=2026.15
If restarting the charger service is unsuccessful, wait 5 minutes and restart the charger service again. If the second restart is still unsuccessful, wait 30 minutes and restart the charger service again. If the third restart is still unsuccessful, wait 3 hours and restart the charger service again.
After those retries, try a hard reset of the Dock at the breaker. If that does not work, create a work order to replace the charger.
After those retries, try a hard reset of the Dock at the breaker. If that does not work, create a work order to replace the charger.
6 question >=2026.15.1
SLOW_CHARGE_RECOVERY_ACTIVE means the Aircraft failed its first 5 charge-start attempts and is periodically retrying over a 24-hour slow recovery window. The default action is to leave the Aircraft docked and allow slow charge recovery to continue. Do you want to wait for recovery or troubleshoot now to restore the asset? 7 action >=2026.15.1
Leave the Aircraft docked and allow slow charge recovery to continue for up to 24 hours. If charging starts and the charging alarms clear, return the Aircraft to service. If
MAX_RETRY_ATTEMPTS_FAILED sets, follow MAX_RETRY_ATTEMPTS_FAILED. 8 action >=2026.15.1
If the asset needs to be restored before the 24-hour slow recovery window expires, use SLOW_CHARGE_RECOVERY_ACTIVE to troubleshoot the underlying Dock or Aircraft charging issue.
Resolution note
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