Maintenance and Cleaning SMA Solar Technology AG
64 SB20HF-30HF-IA-IEN120431 Installation Manual
9.3 Checking the Electronic Solar Switch (ESS) for Wear
Check the Electronic Solar Switch for wear before plugging it in.
Result Measure
☑ The plastic in the Electronic Solar Switch is
undamaged.
• Make sure that the inverter has been
secured with the connection element in
order to prevent it from being lifted out, as
per section 4.3"Mounting the Inverter with
the Wall Mounting Bracket" (page17).
• Insert the handle of the Electronic Solar
Switch securely in the jack on the bottom of
the enclosure.
• Recommission the inverter as described in
section 7"Commissioning" (page49).
☑The plastic in the Electronic Solar Switch
shows thermal deformation.
The Electronic Solar Switch can no longer reliably
disconnect the DC side.
1. Replace the Electronic Solar Switch handle
before attaching it again (for the order
number see section 14"Accessories"
(page93)).
2. Commission the inverter as described in
section 7"Commissioning" (page49).