SMA Solar Technology AG
92 SB50US-80US-IUS094030 Installation Guide
9.3 Testing the Fans
You can verify the operation of the fans in two ways:
• Set the parameter “Fan Test“ to "1" (with Sunny Data, Sunny Data Control or with the data
logger Sunny Boy Control).
or
• Turn off the inverter by turning off all DC and AC disconnects and wait 5 minutes for any residual
voltages to dissipate.
• Once the LED’s are off, remove the cover and set the jumpers as shown in the figure below.
• Turn on the inverter by turning on the AC disconnect and then the DC disconnect or switch the
SMA DC-Disconnect to the "1" position.
Jumper Position for Fan Test
Jumper Position for verifiying the
operation of the fans
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