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SUNSYS pro - SUNSYS station
- Ref.: IOMSUNMOXX00-GB 00
ENGLISH
10. TROUBLESHOOTING
10.2. INVERTER WARNINGS
• W13: High impedance to earth
Make sure the photovoltaic panel earth connection is intact
• W65: Inverter in Derating
The inverter is reducing the power dispensed to the network. Check the other alerts and/or visual warnings.
10.3. SYSTEM ALERTS
• A01: Switch-off due to external command
• A59: Switch-off due to external command
The inverter is switched off due to an external instant switch-off command. Check the external contact
• A04: Low impedance to earth
Check the photovoltaic system isolation to earth
• A05: AC dischargers triggered
Check and replace if necessary
• A06: DC dischargers triggered
Check and replace if necessary
• A07: Output contactor alerts
The output contactor status is not consistent; contact the support service
• A08: Transformer Over-temperature
Check the ventilation or air-conditioning system in the inverter room.
• A09: AC input network Rms value outside tolerated range
• A10: AC input network frequency outside frequency range
The input network is missing or insufficient (incorrect voltage and/or frequency values); if this is not due to a general network absence,
check for any disconnection of protective devices upstream of the inverter.
Check the applied voltage and frequency comply with the values set on the mimic panel.
• A15: Incorrect system configuration
Error in configuration parameters; contact the support service.