Service manual

5. Use a measuring device to measure whether
there is a conductive connection between the
middle and the left-hand varistor lead. Hold the
varistor with the labeling pointing forward.
If there is no conductive connection, the varistor is defective. SMASolarTechnologyAG
recommends replacing all varistors immediately.
• Order new varistors and insertion tools fromSMASolarTechnologyAG.
• If new varistors are available, replace all varistors (see Section7, page24).
If a conductive connection is present, contact the Service (see Section11, page30).
6 Checking the Function of the Varistors
SMA Solar Technology AG
Service Manual 23SB30-60TL-21-SG-en-11