ABB String Inverter PVS300

- Check operation of the cooling and stirring fans. Check the Events menu for possible fan faults. The inverter activates a maintenance reminder when both fans (cooling and stirring) should be replaced. Note that the cooling fan only operates when the inverter detects that cooling is required. Change the fan(s) when the inverter displays a fan fault or a replacement reminder.

- Check the environment. Make sure that the inverter is still in its intended operating environment. Check that the installation environment is still clean, dry, free of obstacles near to the inverter and that the ambient temperature has not risen since installation.

- Clean the inverter installation space and mounting area regularly to remove dust and dirt. This helps to prevent clogging of the cooling fan and heat sink of the inverter.

- Check that cables are properly routed to the inverter. Cables should be tidy, secure and in good condition.

- Check that connectors are properly connected and that they are in a safe, unbroken condition. Check that possible screw and spring terminal connections are tight.

(Yearly if the inverter is indoors with restricted access.;)

- Check event log. Use the control panel to check the event logs from the Events Menu. The menu shows the most recent events as faults or other events. Note that a single fault can potentially give rise to several events. Events are stored in the memory until the event memory is full. When the event memory is full the inverter automatically removes the oldest events from the event memory.;