SMA America, LLC Troubleshooting
Installation Guide SB30-40US-IUS103030 77
9 Troubleshooting
9.1 General
Our quality control program assures that each inverter is manufactured to exact specifications and is
thoroughly tested before leaving the factory. If you encounter difficulty with the operation of your
inverter, please follow the steps below in an effort to correct the problem.
• Check the blinking code of the LED display and compare the code with the blinking codes in
Section 7”Commissioning” (page62).
• Check and record the exact "Mode" and/or "Error" messages on the LCD display or other
communication system available. Take appropriate action to correct the issue.
• If necessary, check the DC and AC voltages at terminals inside the inverter. Be sure to observe
all of the safety precautions listed throughout this manual when doing so, or hire a qualified
professional.
• If the system problem persists, contact SMA.
In order to better assist you when contacting SMA, please provide the following information. This
information is required for service assistance.
Information regarding the Sunny Boy
•Serial number
•Model Number
• Short description of the problem
• Blinking Code or display message
• What error code is indicated on the LCD?
•AC line voltage
•DC line voltage
•Check GFDI Fuse
• Can you reproduce the failure? If yes, how?
• Has this problem occurred in the past?
• What were the operating conditions when the problem occurred?
Information regarding the PV modules
• Manufacturer name and model number of the PV module
• Output power of the module
• Open circuit voltage (Voc) of the module
• Number of modules in each string
• Number of PV strings connected to the inverter
If it becomes necessary to send the Sunny Boy back to the manufacturer for service, please ship it in
the original box to avoid damage during shipping.
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