SMA SB 3300TL - Manual (Page 19)

SMA Technologie AG Device Description
Operating Instructions SB3300TL-11:FE1905 Page 15
Varistor Defective
At least one of the four thermally
monitored varistors on the DC input
side has developed high resistance
and is therefore defective.
Permanent Device Disable
This signal appears in case of a fail-
ure of the grid monitoring / the inde-
pendent disconnection device
(MSD). During the internal test, the
inverter has detected a malfunction
of the MSD and has stopped feeding
to the grid.
Normally this is a failure which can-
not be removed on site. Please con-
tact the manufacturer (see chapter 9
"Contact" (page 55)) to discuss fur-
ther proceedings.
Please contact a qualified electrician who will remove the fail-
ure. For further information see the „Installation Guide“.
Green LED is
permanently on
Red LED is
permanently on
Yellow LED is
permanently on