What does 'Electric arc detected > Check DC generator' mean on SMA Inverter?
The message 'Electric arc detected > Check DC generator' on your SMA Inverter indicates that the inverter has detected an electric arc. Check the PV array.
Why SMA SUNNY BOY 3.8-US is 'Waiting for DC start conditions > Start cond. not met'?
The SMA Inverter displays 'Waiting for DC start conditions > Start cond. not met' because the feed-in conditions for the utility grid are not yet fulfilled. Ensure that the PV array is not covered by snow or otherwise shaded. Wait for higher irradiation. 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. If this message is displayed frequently with medium irradiation, ensure that the PV array is correctly rated.
How to reset forgotten password on SMA SUNNY BOY 3.8-US?
To reset a forgotten password on your SMA Inverter: First, request a PUK using the application form available at www.SMA-Solar.com. Then, open the user interface and enter the PUK in the Password field and select Login. Next, go to the Device Parameters menu and click on [Edit parameters]. In the User Rights > Access Control parameter group, change the password for the desired user group. Finally, save the changes by selecting [Save all].
What does 'Resid.curr.too.high > Check generator' mean on SMA SUNNY BOY 3.8-US Inverter?
The message 'Resid.curr.too.high > Check generator' on your SMA Inverter indicates that the inverter has detected a residual current due to temporary grounding of the PV array. Check the PV system for ground faults.
What does 'High discharge curr. > Check generator' mean on SMA Inverter?
The message 'High discharge curr. > Check generator' on your SMA Inverter means that the leakage current of the inverter and the PV array is too high. Check the PV system for ground faults.
What does 'Insulation failure > Check generator' mean on SMA Inverter?
The message 'Insulation failure > Check generator' on your SMA Inverter indicates that the inverter has detected a ground fault in the PV array. Check the PV system for ground faults.
What does 'Reconnection fault grid' mean on SMA Inverter?
The message 'Reconnection fault grid' on your SMA Inverter means that the changed country data set or the value of a parameter you have set does not correspond to the local requirements. Ensure that the country data set has been configured correctly. To do this, select the parameter Set country standard and check the value.
Why SMA SUNNY BOY 3.8-US Inverter shows 'Unstable operation'?
The SMA Inverter shows 'Unstable operation' because there is not enough power at the DC input for stable operation. Ensure that the PV array is designed correctly, not covered by snow or shaded, and free of errors.
What does 'DC overvoltage > Disconnect generator' mean on SMA Inverter?
The 'DC overvoltage > Disconnect generator' message on your SMA Inverter means there is overvoltage at the DC input. Immediately disconnect the inverter from voltage sources. Check whether the DC voltage is below the maximum input voltage of the inverter. If it is below the limit, reconnect the terminal block with the connected DC conductors to the inverter. If the DC voltage exceeds the maximum input voltage of the inverter, ensure that the PV array has been correctly rated.
What does 'Waiting for grid voltage > Installation failure grid connection > Check grid and fuses' mean on SMA Inverter?
This message on your SMA Inverter indicates that L or N is not connected. Ensure that L and N are connected, the AC conductors are not damaged and correctly connected, and the circuit breaker is switched on.
General| Model | SUNNY BOY 3.8-US |
|---|---|
| Type | String inverter |
| Rated AC Power | 3.8 kW |
| AC Nominal Power | 3.8 kW |
| Nominal AC Voltage | 240 V |
| AC Voltage Range | 211 - 264 V |
| Nominal AC Frequency | 60 Hz |
| Total Harmonic Distortion | < 3% |
| Number of DC Inputs | 2 |
| Number of MPP Trackers | 2 |
| CEC Weighted Efficiency | 97.0% |
| Night Time Consumption | < 1 W |
| Topology | Transformerless |
| Cooling | Convection |
| Enclosure Rating | NEMA 3R |
| Operating Temperature Range | -25 °C to +60 °C |
| Operating Temperature Range (°C) | -25 to +60 |
| Warranty | 10 years |
| Maximum AC Apparent Power | 3800 VA |
| Power Factor at Nominal Power | 1.0 |
| Maximum Input Current | 11 A |
| Efficiency | 97.5% |
| Communication | Ethernet, WLAN, Wi-Fi |
| Weight (kg) | 15 |
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