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Jennifer VillegasSep 12, 2025
What should I do if my SMA STP 33-US-41 displays 'Residual current too high'?
- HhayesbriannaSep 12, 2025
If your SMA Inverter indicates that the residual current is too high, check the PV system for ground faults.
What should I do if my SMA STP 33-US-41 displays 'Residual current too high'?
If your SMA Inverter indicates that the residual current is too high, check the PV system for ground faults.
What to do if my SMA STP 33-US-41 says 'Grounding connection missing'?
If the SMA Inverter indicates a missing grounding connection, ensure that the grounding conductor is correctly connected.
What to do if my SMA Inverter says no update file found?
If your SMA Inverter displays 'No update file found', it means no new update file was found on the SD memory card, the update failed, retry update.
How to reset a forgotten password on an SMA Inverter?
If you've forgotten your password for the SMA Inverter, you can assign the changed password of the user group Installer as the new system password in the communication product. Alternatively, you can request a PUK via an application form at www.SMA-Solar.com. To use the PUK, open the user interface, enter the PUK instead of the password in the Password field, and select Login. Then, go to Device parameters, click on Edit parameters, and in User Rights > Access Control, change the password of the desired user group. Finally, save the changes by selecting Save all.
What to do if my SMA Inverter shows Grid incident (Event 101)?
If your SMA Inverter displays a Grid incident (Event 101), it means the grid voltage or grid impedance at the connection point of the inverter is too high. Check whether the grid voltage at the connection point of the inverter is permanently in the permissible range. Contact the grid operator to agree on adjusting the voltage at the feed-in point or changing the monitored operating limits. If the grid voltage is within range and the message persists, contact the Service.
What to do if my SMA Inverter shows Grid incident (Event 301)?
If your SMA Inverter shows a Grid incident (Event 301), it indicates that the ten-minute average value of the grid voltage is no longer within the permissible range. During feed-in operation, check if the grid voltage at the inverter's connection point is permanently within the permissible range. Contact the grid operator to discuss adjusting the voltage at the feed-in point or changing the monitored operating limits. If the grid voltage remains within the permissible range and the message persists, contact the Service.
What to do if the Wi-Fi update on my SMA Inverter was not successful?
If your SMA Inverter displays 'Update of Wi-Fi not successful', retry the update. If the message is displayed again, contact the Service.
What does DC overcurrent mean on my SMA Inverter?
If your SMA Inverter displays a DC overcurrent message, ensure that the PV array has been correctly rated and wired if this message is displayed frequently.
What does Grid incident (Event 401) mean on my SMA Inverter?
If your SMA Inverter displays Grid incident (Event 401), it means a stand-alone grid or a very large change in the grid frequency was detected. Check the grid connection for significant short-term frequency fluctuations.
What does Grid incident (Event 501) on my SMA STP 33-US-41 Inverter mean?
If your SMA Inverter displays Grid incident (Event 501), it means the power frequency is not within the permissible range. If possible, check the power frequency and observe how often fluctuations occur. Contact the grid operator and request approval to change the operating parameters of the inverter. Discuss any changes to the operating parameters with the Service if the grid operator gives his approval.
General| Model | STP 33-US-41 |
|---|---|
| Type | String Inverter |
| Power Rating | 33 kW |
| Max. Input Voltage | 1000 V |
| Rated AC Power | 33 kW |
| Max. AC Apparent Power | 33 kVA |
| Nominal AC Voltage | 480 V |
| AC Voltage Range | 432 V - 528 V |
| Number of MPPTs | 2 |
| Topology | Transformerless |
| Enclosure Category | NEMA 4X |
| AC Power Output | 33 kW |
| Dimensions | 800 x 600 x 250 mm |
| Operating Temperature Range | -25°C to +60°C |
Information about the document's validity for specific firmware versions.
Defines the intended audience and required skills for the manual.
Outlines the document's organization and scope.
Explains the different warning levels (Danger, Warning, Caution).
Explains the meaning of various symbols used in the manual.
Details the use of typography like bold text and symbols.
Provides resources for further details and support.
Describes the product's designed purpose and suitability.
Critical safety guidelines for operation and maintenance.
Details the physical components and design of the product.
Explains warning and information symbols found on the product itself.
Describes the various interfaces and built-in functionalities of the inverter.
Explains the meaning of different LED indicators and their states.
Guides on connecting to the product's interface via Ethernet or WLAN.
Instructions for user authentication and session management.
Overview of the main dashboard and its components.
How to access and save operational data from the device.
Guide to initiate the step-by-step configuration process.
General guide for adjusting operational settings.
Enabling and configuring the emergency shutdown feature.
Procedures for manual and automatic firmware updates.
Steps to recover or reset lost user credentials.
Lists and explains various error and status messages with corrective actions.
Procedures to diagnose and resolve ground fault issues.
How to clear operation blocks after an arc fault event.
Regulatory compliance details for FCC standards.
Regulatory compliance details for Industry Canada standards.
