SMA SB 3000TL-20 Installation - Manual (Page 68)

Maintenance and cleaning SMA Solar Technology AG
68 SB30TL_40TL_50TL-IA-IEN120231 Installation Guide
8.1.2 Check fan (only with Sunny Boy 4000TL/5000TL)
1. Enter the installer password.
2. Set the "CoolSys.FanTst" parameter or "Fan test" to "on" in the installer mode.
3. Check the air-flow of the fan.
The inverter sucks air in from underneath and then blows it back out on the upper left side. Listen
for any unusual noise, which could indicate incorrect installation or that the fans are faulty.
4. After the test, set the parameter "CoolSys.FanTst" or "Fan test" back to the "off" position.
☑ You have finished checking the fan.
Checking the Fan
To test the fan you will need a special data logging device (e.g. Sunny WebBox) or a PC
with appropriate software (e.g. Sunny Explorer) in order to change the parameters of the
inverter.
You will also need the installer password to access the installer mode.