SMA SB 4200TL HC Multi-String - Manual (Page 49)

SMA Technologie AG Replacing the Varistors
Installation Guide SBTLHCMS-IEN080411 Page49
11. Reconnect the PE connection to the cover and close the Sunny Boy.
10. If no replacement varistors are available on site,
the Sunny Boy can temporarily run without them.
To do this, remove the varistors you identified as
being faulty and in their place, bridge the termi-
nals 2 and 3 with a length of wire.
Notice!
The input modified in this way is no longer protected against overvoltag-
es! Replacement varistors should be obtained as soon as possible. In sys-
tems with a high risk of overvoltages, the Sunny Boy should not be
operated without varistors.
12. Connect up the faultless PV generator strings to
the inverter. Ensure the assignment of the strings
is correct.
13. Close the unnecessary DC input sockets with the
caps included in the delivery.
14. Attach the handle of the Electronic Solar Switch.
Notice!
The Electronic Solar Switch can become damaged if it has not been at-
tached properly.
Firmly insert the handle all the way into the socket in the Sunny Boy and
check that it is firmly inserted. Never tighten the screws of the socket inside
the Sunny Boy in order to avoid that the socket locks in place.