A DC link capacitor failure is a breakdown of the bulk capacitors inside the inverter. On ABB and FIMER string inverters it shows as error E015, labelled Bulk Cap Fail or Cap. Fault, with a yellow or alarm LED. The fault is inside the inverter and cannot be checked from outside. Switch the inverter off and back on. If the error comes back, contact the manufacturer's customer assistance. Before opening the inverter, wait for the internal capacitor to discharge. Then use a voltage detector to confirm there is no voltage on the bulk capacitor.
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affectsc1 verified · fact DC link capacitor
Manuals describe it as a breakdown or fault on the bulk capacitors inside the inverter.
tbl=47.r2 h=d4397ea50b07tbl=53.r9 h=46f1f27a4794tbl=38.r3 h=a644b87ba56ctbl=39.r8 h=2458486027cdverified by: review-workflowverified on: 2026-10-23
presents_asc2 verified · fact Internal device fault
The error is internal to the inverter and cannot be checked from outside. Reported as E015 with a yellow or alarm LED.
tbl=47.r2 h=d4397ea50b07tbl=53.r9 h=46f1f27a4794tbl=38.r3 h=a644b87ba56ctbl=39.r8 h=2458486027cdverified by: review-workflowverified on: 2026-10-23
detected_byc3 verified · fact Inverter display check
Error code E015 is shown as 'Bulk Cap Fail' or 'Cap. Fault' on ABB/FIMER inverters.
tbl=38.r3 h=a644b87ba56ctbl=47.r2 h=d4397ea50b07tbl=53.r9 h=46f1f27a4794tbl=39.r8 h=2458486027cdverified by: review-workflowverified on: 2026-10-23review note: support check: partial - Passages show E015 displayed as Bulk Cap Fail/Cap. Fault, but don't name ABB/FIMER or describe display checking as a detection method.
mitigated_byc4 drafted · lead Inverter restart
Turn the inverter off and on again to see whether the error persists.
tbl=47.r2 h=d4397ea50b07tbl=53.r9 h=46f1f27a4794tbl=38.r3 h=a644b87ba56ctbl=39.r8 h=2458486027cdreview note: support check: partial - Passages say to switch off and on and see if the problem persists, but a restart is a check, not stated to mitigate or fix the failure.; review: partial - The rows say to switch the inverter off and on and see whether the problem persists, but they present this as a check before contacting support and never say a restart mitigates the capacitor failure.
c5 verified · fact Contact manufacturer service
If the error persists after a restart, contact customer assistance.
tbl=47.r2 h=d4397ea50b07tbl=53.r9 h=46f1f27a4794tbl=38.r3 h=a644b87ba56ctbl=39.r8 h=2458486027cdverified by: review-workflowverified on: 2026-10-23
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