SMA SB 2800i - Manual (Page 19)

Operating Instructions Device Description
SB2800i-11:FE0504 SMA Regelsysteme GmbH 17
Derating
The temperature monitoring of the Sunny Boy 2800i has reduced
the output power to prevent the device from overheating. If this
happens often, heat dissipation might be insufficient.
To avoid unnecessary yield losses,
• check if the ambient temperature is to high.
• check the heat dissipation (air flow of the heatsink disabled).
• check the fan.