Dc Current After Ac-Side Disconnection - SMA SUNNY BOY 3000TL Installation Manual

Troubleshooting
Event no. Message
9003 Grid param. locked The current country data set is locked.
9005 Changing grid
param. not
possible
Ensure DC supply
11.4 DC Current after AC-side Disconnection
In spite of the AC side having been disconnected, a current is still detectable in the DC cables with a
current clamp. This is not an error but normal behaviour of the inverter when in operation.
• Always disconnect the inverter on the AC and DC sides (see Section 8.2 "Disconnecting the
Inverter from Voltage Sources" (page 56)).
74 SB25-30TLST-21-IA-en-12
Cause and corrective measures
Corrective measures:
• Enter a valid SMA Grid Guard code for changing the
country data set.
This error can have the following causes:
• The selected rotary switch setting for the language settings
is not programmed.
• The parameters to be changed are protected.
• DC voltage at the DC input is not sufficient to run the main
CPU.
Corrective measures:
• Check the rotary switch setting (see Section 6.5.1
"Checking the Country Standard" (page 45)).
• Enter the SMA Grid Guard code.
• Ensure sufficient DC voltage is available (green LED is
glowing or flashing).
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Installation Manual