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SMA SUNNY BOY 3800 - User Manual

SMA SUNNY BOY 3800
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SB33_38-BEN104820 | IME-SB3800 | Version 2.0
PV Inverter
SUNNY BOY 3300/3800
User Manual
EN
ES
Symbols on the Inverter
Operation Display.
Ground fault or varistor defective.
Please inform your installer.
An error has occurred. Please inform your installer immediately.
Tap to switch on the display light and switch to the next message.
Symbols on the Type Plate
Beware of dangerous electrical voltage.
The inverter operates at high voltages. Any work on the inverter must be carried out
by quali󹻭ed personnel only.
Beware of hot surface.
The inverter can become hot during operation. Avoid contact during operation.
Observe enclosed documentation.
The inverter must not be disposed of with the household waste.
Further disposal information can be found in the enclosed installation guide.
CE mark. The inverter complies with the requirements of the applicable EC
guidelines.
RAL quality mark for solar products. The inverter complies with the requirements of
the German Institute for Quality Assurance and Labeling.
Direct Current (DC)
Alternating Current (AC)
The inverter is protected against penetration by dust particles and water jets from
any angle.
The inverter has a transformer.
AC
Abbreviation for "alternating current".
DC
Abbreviation for "direct current".
Derating
A controlled reduction in performance, usually dependent on component temperatures.
Electronic Solar Switch (ESS)
The Electronic Solar Switch is part of the inverter's DC isolator. The Electronic Solar Switch must be
securely inserted into the bottom of the inverter and may only be removed by quali󹻭ed personnel.
Grid impedance
Grid impedance is a characteristic parameter of the power network, which is determined by both its
infrastructure and the number of feed units and loads. If the supply for the grid section should drop
due to a grid shutdown by the preceding energy suppliers (medium-voltage transformers), the grid
impedance will change abruptly. In order to detect this and to prevent the formation of an unwanted
stand-alone grid, SMA Grid Guard monitors the grid impedance and disconnects the inverter from the
grid in the event of a sudden impedance variation.
MPP (Maximum Power Point)
Operational point of the inverter, dependent on current / voltage of the PV generator. The actual
position of the MPP changes constantly, depending on the level of solar irradiation and the cell
temperature.
PV
Abbreviation for photovoltaics.
Varistor
The varistors protect the electronics in the inverter from atmospherically coupled energy peaks, such as
those that can occur when lightning strikes nearby.
EXPLANATION OF SYMBOLS
GLOSSARY
CONTACT
If you have technical problems, 󹻭rst contact your installer. The following information is required in
order to provide you with the necessary assistance:
Inverter device type
Inverter serial number
Type and number of PV modules connected
Blink code or display message of the inverter
Optional equipment (e.g. communication devices)
SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal, Germany
www.SMA.de
SMA Serviceline
Inverters: +49 561 9522 1499
Communication: +49 561 9522 2499
Fax: +49 561 9522 4699
E-mail: Serviceline@SMA.de
Installer contact
Visual inspection
Check the inverter and cables for any signs of external damage. Contact your installer if you 󹻭nd any
defects. Do not carry out any repairs on your own.
Maintenance and Cleaning
Ask your installer to check for proper inverter operation at regularly.
VISUAL INSPECTION, MAINTENANCE AND CLEANING

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Questions and Answers

  • A
    Andrew FloresAug 8, 2025
    How to fix a SMA Inverter when the red LED glows continuously?
    • T
      Tracy SuttonAug 8, 2025
      First, check the varistors using a multimeter. If another fault exists, contact the SMA Service Line. Alternatively, replace the defective varistor with a new one ordered from SMA Solar Technology.
  • N
    Nicholas EdwardsAug 18, 2025
    Why does my SMA Inverter show ACVtgRPro?
    • T
      Thomas SimpsonAug 18, 2025
      The ACVtgRPro error on your SMA Inverter indicates that the grid voltage at the connection point is too high, or the grid impedance at the connection point is too high. You should check the grid voltage at the inverter's connection point. If the grid voltage is continually within the acceptable range, and this error is still displayed, contact the SMA Serviceline. If the grid voltage is 253 V or more, ask the electric power company whether the voltage at the feed-in point can be adjusted, or whether they would agree to an alteration of the limit value of the ACVtgRPro parameter for voltage quality monitoring.
  • M
    Megan SmithAug 27, 2025
    What to do if my SMA SUNNY BOY 3800 Inverter displays '!PV-Overvoltage! !DISCONNECT DC!'?
    • T
      tanya19Aug 27, 2025
      Immediately disconnect the SMA Inverter from the grid. Here's how: 1. Turn off the line circuit breaker. 2. Remove the Electronic Solar Switch. 3. Disconnect all the DC connectors. 4. Check the DC voltage. * If the DC voltage exceeds the maximum input voltage, check the plant design or contact the person who installed the PV generator. * If the DC voltage is below the maximum input voltage, reconnect the inverter to the PV generator. If the message appears again, disconnect the inverter and contact the SMA Serviceline.

Summary

Contact and Installer Information

Installer Contact Details

Essential information required by installers for technical assistance.

Explanation of Symbols

Inverter Operational Symbols

Symbols indicating inverter status like operation, errors, and display interaction.

Type Plate Safety and Compliance Symbols

Marks on the type plate indicating electrical hazards, heat, disposal, and certifications.

Inspection, Maintenance, and Cleaning

Visual Inspection Guidance

Instructions for visually checking the inverter and cables for damage.

Professional Maintenance and Cleaning

Recommends installer checks for proper inverter operation at regular intervals.

Glossary of Technical Terms

Safety Instructions and Warnings

Product Overview

Component Identification

Identifies key components of the Sunny Boy inverter via illustration.

LED Status Indicators

Display Information and Messages

Display Operation and Messages

Details how to operate the display and lists various operational messages.

Measuring Channels and Status Messages

Measuring Channels for Diagnosis

Lists available measurement channels for system diagnosis and their descriptions.

Status Messages and Meanings

Explains various status messages indicating the inverter's operating conditions.

SMA SUNNY BOY 3800 Specifications

General IconGeneral
ModelSUNNY BOY 3800
Rated Output Power3800 W
Maximum DC Input Power4800 W
Max. input voltage600 V
Number of MPP Trackers1
CoolingNatural Convection
Protection ClassIP65
Max. AC apparent power3800 VA
Nominal AC voltage230 V
Max. output current16.5 A
Maximum AC Output Power3800 W
Nominal AC Frequency50 Hz / 60 Hz
Operating Temperature Range-25 °C to +60 °C
Protection DegreeIP65
TypeString Inverter
Max. DC power4000 W
AC Frequency Range47 Hz - 52 Hz / 57 Hz - 62 Hz

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