SMA SB 1300TL Service Manual - Manual (Page 23)

• Check the metal mounting tabs inside the
ESS for discoloration or damage.
If the metal mounting tabs show brown
discoloration or are damaged, order a new
ESS from SMA Solar Technology AG and
have the ESS replaced.
If the metal mounting tabs show no brown
discoloration or damage, the ESS is not
worn and can still be used.
7.
Risk of fire due to tightening the screw within the ESS
A perfect contact between the ESS and the inverter is only guaranteed if the ESS plug remains
flexible.
• Do not tighten the screw in the plug of the ESS.
8.
Damage to the inverter due to moisture and dust intrusion
If the ESS is not plugged in or incorrectly plugged in during operation, moisture and dust can
penetrate the inverter. If the ESS is not correctly plugged in, this can cause contacts in the ESS
to wear or the ESS might fall out. This can result in yield loss and damage to the ESS.
Always plug in the ESS as follows:
• Securely plug in the ESS. The ESS must be aligned parallel to and flush with the
enclosure.
• Ensure that the gap between the ESS and the enclosure is no more than 1 mm.
9. If an external DC load-break switch is installed, switch it on.
10. Switch on the circuit breaker.
☑ The start-up phase begins.
☑ The green LED is glowing and the display alternates between the device type or
designation of the inverter, the firmware version and the configured country data set.
✖ The green LED is flashing?
The DC input voltage is still too low or the inverter is checking the utility grid.
• Once the DC input voltage is sufficiently high and the grid connection conditions are
met, the inverter will start operation.
✖ The red LED is glowing?
The inverter has detected a ground fault or one of the varistors is defective.
• Eliminate the error (see Section 4.2 "Red LED is Glowing Continuously", page 16).
✖ Yellow LED flashing?
An error or disturbance has occurred.
• Eliminate the error or disturbance (see Section 4.1 "Error Messages", page 11).
5 Recommissioning the Inverter SMA Solar Technology AG
Service Manual 23 SB13-21TL-SG-en-11