Internal fault (e.g. residual current monitoring unit)
Fronius · Primo GEN24
¿Qué significa 715 ?
The Fronius Primo GEN24 208-240 inverter has detected an internal fault within its residual current monitoring unit (RCMU). This unit is crucial for detecting ground faults and ensuring safety. A fault here means the inverter cannot safely operate and will shut down.
Causas comunes
- Internal fault (e.g. residual current monitoring unit).
Pasos de reparación & Lista de verificación
Haga clic en los pasos para seguir su progreso.
- 1
Perform a full power cycle of the Fronius Primo GEN24 208-240 inverter by opening both the AC circuit breaker and the DC disconnector, waiting, and then reclosing them.
- 2
Ensure there are no actual ground faults in either the AC or DC circuits that might be causing the RCMU to incorrectly trip or fail.
- 3
Check for any moisture ingress or contamination within the inverter that could affect sensitive RCMU components.
- 4
Review the inverter's event log for any preceding fault codes related to insulation faults (e.g., 3xx codes) or grid issues.
- 5
As this is a critical safety component, if the fault persists, contact Fronius service immediately for inspection and potential replacement of the RCMU.