SolarEdge Home Hub Inverter Diagnostics
Classification: Solar Inverters Equipment
Hardware operational fault codes, protection alarms, LED blink sequences, and step-by-step diagnostic fixes for the SolarEdge Home Hub Inverter.
Indexed Fault Codes for Home Hub Inverter
Step-by-step resolution manuals and root cause matrices
DC Isolation Leakage Current Fault
Error 18xBD indicates an RISO/isolation fault where the DC bus isolation resistance to earth has dropped below the safety limit (typically <600 kΩ for single-phase or <1 MΩ for three-phase), causing an excessive residual/leakage current detection prior to grid connection.
DC Isolation Resistance Low
The inverter detected an insulation breakdown between the active DC conductors (PV array or battery circuit) and Protective Earth (PE). Measured isolation resistance fell below the mandatory threshold (typically < 600 kΩ for single-phase or < 1 MΩ for three-phase systems), tripping ground-fault protection to prevent electrical shock and arc hazards.