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3901/3902
Waiting for DC start conditions > Start cond. not met
SMA · Sunny Boy Solar Inverter
Hva betyr 3901/3902 ?
The necessary feed-in conditions for the utility grid have not yet been fulfilled, preventing the inverter from starting operation. This is often related to environmental conditions or initial setup parameters.
Vanlige årsaker
- PV array is covered by snow or otherwise shaded, reducing power output.
- Insufficient solar irradiation to meet minimum operating thresholds.
- The voltage limit for starting grid feed-in is set too high (parameter `Critical voltage to start feed-in`).
- PV array is incorrectly rated for the inverter's start-up requirements.
Reparasjonssteg & Sjekkliste
Klikk på steg for å spore fremgangen.
- 1
Ensure that the PV array is not covered by snow or otherwise shaded.
- 2
Wait for higher solar irradiation levels.
- 3
If this message is displayed frequently in the morning, increase the voltage limit for starting grid feed-in by changing the parameter `Critical voltage to start feed-in`.
- 4
If this message is displayed frequently with medium irradiation, ensure that the PV array is correctly rated for the inverter.
Verifisert teknisk data. Sist oppdatert: March 2026
Relaterte feilkoder
Kilde: SMA Sunny Boy Solar Inverter