Inspection Of The Electronic Solar Switch (Ess) - SMA SUNNY MINI CENTRAL 6000TL Installation Manual

SMA Solar Technology AG Maintenance
8.2 Inspection of the Electronic Solar Switch (ESS)
Check the Electronic Solar Switch for wear before you attach it.
To do this, check the metal tongues on the inside of the plug for brown discoloration.
Metal tongues
If the metal tongues are brown or completely burned out (see figure below), then the Electronic Solar
Switch can no longer reliably disconnect the DC side.
Worn-out metal tongues
You must replace the handle of the Electronic Solar Switch before you can reactivate the Sunny Mini
Central. Replacements for damaged Electronic Solar Switch handles are available from your dealer.
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