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SMA Solar Technology AG
7 Sunny Boy Opening and Closing
NOTICE!
Electrostatic discharges can damage the Sunny Boy!
Internal components of the Sunny Boy can be irreparably damaged by electrostatic
discharge.
• Ground yourself before you touch a component.
7.1 Opening the Sunny Boy
DANGER!
Danger to life due to high voltages.
• Before opening the Sunny Boy, switch the line circuit breaker off and make sure that
it cannot be switched back on.
1. Remove the Electronic Solar Switch.
2. Disconnect the PV generator from the Sunny Boy.
DANGER!
Danger to life due to unsafe disconnection from the PV generator!
A secure separation from the PV generator is only guaranteed after pulling off the
Electronic Solar Switch and all DC connectors.
• Remove all DC plug connectors to completely disconnect the PV generator from the
Sunny Boy.
3. Check whether all LEDs and the display have gone out.
DANGER!
Danger to life due to high voltages.
• Wait 15 minutes for the capacitors to discharge.
4. Remove the four screws from the housing cover and pull the cover forward smoothly. Remove
the PE connection from the cover by loosening the locking device of the PE connection on the
cover.
5. Verify the absence of voltage with respect to ground at the AC clamp with an appropriate
meter. If there is a voltage present, check the installation!
Installation Guide
Sunny Boy Opening and Closing
SB3300TLHC-IEN094121
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