Cleaning The Fans; Cleaning The Fan At The Bottom - SMA SUNNY TRIPOWER 12000TL-US Manual De Uso

10 Troubleshooting
Event number Message, cause and corrective measures
29001 Grid Guard code valid
The entered SMA Grid Guard code is valid. Protected parameters have now
been unlocked and you can adjust the parameters. The parameters will be au-
tomatically locked again after ten feed-in hours.
29004 Grid param. unchanged
Changing the grid parameters is not possible.

10.3 Cleaning the Fans

10.3.1 Cleaning the Fan at the Bottom

First clean the fan at the bottom of the inverter and then clean the fan on the left-hand side of the
enclosure.
Procedure:
1.
Danger to life due to electric shock
• Disconnect the inverter from all voltage sources (see Section 9 "Disconnecting the
Inverter from Voltage Sources", page 43).
2. Wait for the fan to stop rotating.
3. Remove the fan guard and clean it:
• Use a screwdriver to push the two locking tabs
at the right-hand edge of the fan guard to the
right-hand side and remove them from the
retainer.
• Carefully remove the fan guard.
• Clean the fan guard with a soft brush, a paint
brush, a cloth or compressed air.
4. Press the locking tabs on the fan toward the center
of the fan.
5. Carefully remove the fan from the inverter.
56 STPTL-US-10-IA-xx-20
SMA Solar Technology America LLC
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Installation Manual