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SUNSYS pro - SUNSYS station
- Ref.: IOMSUNMOXX00-GB 00
10. TROUBLESHOOTING
The alert messages which can appear on the display offer immediate diagnosis of any faults, malfunctions or breakdowns in the
photovoltaic system. The following events are indicated:
• Warning: non-serious alert conditions which cause the inverter to stop but can be reset automatically
• Alerts: serious alert conditions which cause the inverter to stop and require a manual reset command from the operator to be reset.
Alerts and warnings are divided into two categories:
•
System Alerts/Warnings:
these affect the parts external to the UPS, such as the mains power network, the output line and the
ambient temperature. Corrective actions can usually be activated by the user (system installer or operator)
•
Inverter Alerts/Warnings:
relate to the parts of the inverter. Corrective actions are generally activated by the Support Service.
10.1. SYSTEM WARNINGS
• W01: Ambient Over-temperature
The ambient temperature recorded by the inverter is over 45° (see values on mimic panel). Check the ventilation or air-conditioning
system in the inverter room.
•
W02: Ambient Temperature under the minimum threshold
The ambient temperature recorded by the inverter is under 15° (see value on mimic panel). Check the ventilation or air-conditioning
system in the inverter room.
•
W03: System efficiency not aligned
The power obtained from the inverter is too low in relation to the rated system power. Make sure the photovoltaic panels are
connected properly.
• W04: Internal Over-temperature
• W66: Internal Over-temperature
The temperature of the inverter power structure is over 110° (see value on mimic panel). Check the ventilation or air-conditioning
system in the inverter room.
• W05: Low Radiation
• W67: Low Radiation
The inverter is waiting for the incoming energy level to increase before attempting activation.
• W06: Continuous input voltage too low
The inverter is waiting for the incoming energy level to increase before attempting activation.
• W19: No inverter present
There has been no radiation for over 24 hours: this condition may be normal but is highlighted so that the necessary checks can
be carried out.
•
W20: High impedance to earth
If the isolation controller and resistance to earth recorded is too high this warning is generated: check the protective fuses and if the
problem persists contact the support service.
• W69: AC input network outside tolerated range
• W70: AC input network outside frequency range
The input network is missing or insufficient (voltage and/or frequency values incorrect in reference to the information provided in the
technical data table); 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.
