SMA SUNNY BOY 3800TL-US Installation Manual page 70

11 Troubleshooting
Event number
8801 to 8803
9002
9003
70 SB3-5TLUS22-IA-en-16
Display message
No display
Grid guard code
invalid
Grid param. locked
Cause and corrective measures
This error message can have 3 causes but the
inverter continues to feed into the utility grid.
The ambient temperature is lower than ‒13°F
(‒25°C). The display switched off for protection.
The inverter cannot identify the display type.
No display is connected to the inverter or the
connection is defective.
Corrective measures:
• If the display switched off due to the ambient
temperature being too low, wait until the
ambient temperature is above ‒13°F
(‒25°C).
• If the ambient temperature is above ‒13°F
(‒25°C), contact the SMA Service Line.
The SMA Grid Guard code entered is incorrect.
The parameters are still protected and cannot be
changed.
Corrective measures:
• Enter the correct SMA Grid Guard code.
The parameters are now locked. The parameters
cannot be changed.
Corrective measures:
• Unlock the parameters with the
SMA Grid Guard code.
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Installation Manual