SMA SUNNY BOY 3600TL - Page 88

12 Troubleshooting SMA Solar Technology AG
88 SB30-50TL-21-IA-en-21 Installation Manual
6. Insert an insertion tool into the openings of the
terminal contacts.
7. Insert new varistors into the slots (as shown in the
diagram on the right).
Make sure that the labelling points to the left, i.e.
towards the insertion tool.
Result Measure
☑There is a conductive connection. The varistor is functional. There must be a different error
in the inverter.
• Contact the SMA Service Line (see Section16
"Contact", page114).
☑There is no conductive
connection.
The respective varistor is defective and must be
replaced.
Varistor failure is generally due to influences that affect
all varistors in a similar manner (temperature, age,
induced overvoltage). SMA Solar Technology AG
recommends replacing all varistors.
The varistors are specially manufactured for use
in the inverter and are not commercially available.
You will need to order replacement varistors directly
from SMA Solar Technology AG (see Section15
"Accessories", page113). Only use original varistors
that are sold by SMA Solar Technology AG.
• For replacing the varistors, proceed to step 6.
x x
x x x
x x x