SMA Technologie AG Troubleshooting
Installation Guide SB40TL_50TL-IEN081211 69
6.
7. Use a multimeter to check all the varistors and see
if there is a conducting connection between
connectors 2 and 3.
NOTICE!
Electrostatic discharges can damage the Sunny Boy!
The Sunny Boy can be damaged irreparably by electrostatic discharge to its
internal components.
• Ground yourself before you touch a component.
Event Measure
There is a conducting
connection.
There is probably another fault in the Sunny Boy.
• Continue with point 9.
• Discuss further steps with the SMA Technical Service
Line.
There is no conducting
connection.
The respective varistor is defective and must be replaced.
The varistors are specially manufactured for use in the Sunny
Boy and are not commercially available. They must be
ordered directly from SMA Technologie AG (SMA order
code: "MSWR-TV8").
To replace the part, proceed to point 8.
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