SMA Solar Technology AG Maintenance and Cleaning
Installation Manual SB20HF-30HF-IA-IEN120431 63
9.2.2 Checking the Fan (only for SB 2500HF-30 / 3000HF-30)
1. Enter the installer password.
2. Set parameters "CoolSys.FanTst" and/or "Fan test" to "On" in installer mode.
3. Check the air‑flow of the fan.
The inverter draws air in from underneath and then blows it out at the top. Listen for any unusual
noise, which could indicate incorrect installation or that the fan is faulty.
4. After the test, set the parameter "CoolSys.FanTst" and/or "Fan test" back to the "Off" position.
☑ The fan test is completed.
Checking the Fan
To test the fan you will need a special data capture 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.
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