SMA
Technologie AG
Maintenance
Installation Guide
SB40TL_50TL-IEN081211
53
9 Maintenance
9.1 Checking Heat Dissipation
If the Sunny Boy often loses power due to overheating (temperature symbol on the display lights
up), this can be for the following reasons:
•
The cooling fins on the rear of the housing are covered in dirt.
•
The ventilation channels on the top are covered in dirt.
•
The fan is blocked.
Clean the cooling fins and ventilation channels with a soft brush if necessary. Clean the fan as
described below.
9.1.1 Cleaning the Fan
If the fan is only covered in loose dust, it can be cleaned with a vacuum cleaner. If you do not
achieve satisfactory results with a vacuum cleaner, you can dismantle the fan for cleaning.
If the housing and fan are heavily soiled, proceed as follows:
1.
Open the Sunny Boy as described in section 8.1 „Opening the Sunny Boy” (Page 49).
2.
Wait for the fan to stop rotating.
3.
Unlock and unplug the fan connection plug (A).
4.
Push both latches of the fan (B) towards the fan
and remove the housing with the fan.
Summary of Contents for SUNNY BOY 4000TL
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