Maintenance and cleaning
SMA America, LLC
70
SB20_25_30HFUS-eng-IUS113711
Installation Guide
9 Maintenance and cleaning
Check the correct operation of the Sunny Boy at regular intervals.
Impurities such as dust or pollen can cause heat accumulation that can lead to yield losses. Also check
the Sunny Boy and the cables for visible external damage. Undertake repairs if necessary.
9.1 Checking Heat Dissipation
If the Sunny Boy regularly reduces its output due to too high heat (temperature symbol on the display
illuminates), this can be caused by the following:
• The cooling fins on the rear side of the enclosure are clogged with dirt.
– Clean the cooling fins with a soft brush.
• The fan is clogged with dirt.
– Clean the fan.
CAUTION
The cooling fins of the Sunny Boy become hot during operation.
Burn injuries will result when touching the fins.
• Wait for the Sunny Boy to cool down, before checking the heat dissipation.
