Cleaning the Fans
Qualified person
If the user interface displays the warning Derating due to temp. unusually often, it is likely that one of the fans is defective or blocked.
Procedure:
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Clean the ventilation grids.
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Clean the fans.
Cleaning the Ventilation Grids
Proceed as follows to clean each ventilation grid.
Procedure:
- Remove the ventilation grid laterally.
- Do not remove the ventilation grid permanently, otherwise foreign bodies could penetrate the enclosure.
- Clean the ventilation grid with a soft brush, a paint brush, or compressed air.
- Close the recessed grips with the ventilation grids. Ensure that the assignment is correct. The correct assignment is marked on the inside of each ventilation grid: links/left for the left-hand side and rechts/right for the right-hand side.
NOTICE
Damage to the inverter due to foreign bodies
Cleaning the Fans
Proceed as follows to clean each fan.
DANGER
Danger to life from electric shock due to high voltages
High voltages are present inside the inverter. When the enclosure lid is removed, live components can be touched that can result in death or serious injury due to electric shock.
- Disconnect the inverter from all voltage sources ( > Disconnecting the Sunny Island from Voltage Sources).
- After switching off the inverter, wait at least 15 minutes before opening the inverter to allow the capacitors to discharge completely.
- Disconnect the Sunny Island from voltage sources ( > Disconnecting the Sunny Island from Voltage Sources).
- Wait for the fans to stop rotating.
- Check whether the fan guard is dusty or badly clogged.
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Use a screwdriver to push the two locking tabs at the right-hand edge of the fan guard to the right-hand side and remove them from the retainer.
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Carefully remove the fan guard.
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Clean the fan guard with a soft brush, a paint brush, a cloth or compressed air.
- Check whether the fan is soiled.
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Use a screwdriver to push the two locking tabs at the right-hand edge of the fan guard to the right-hand side and remove them from the retainer.
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Carefully remove the fan guard.
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Push the front locking tabs of the fan backwards and the rear locking tabs of the fan forwards.
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Slowly remove the fan from the Sunny Island.
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Release and remove the fan plug.
- Clean the fan with a soft brush, a paint brush, or a damp cloth.
- Insert the plug of the fan in the pin connector until it snaps into place.
- Insert the fan into the Sunny Island until the fan audibly snaps into place.
- Press the fan guard into the bracket until it audibly snaps into place.
If the fan guard is dusty, clean it with a vacuum cleaner or a soft brush.
If the fan guard is heavily soiled, remove it and clean it:
If the fan is soiled, remove the fan:
