SMA Sunny Boy User Manual

Fehleranalyse-SG-en-10 | Version 1.0 ENGLISH
This document serves as a guide for troubleshooting in a PV system. Please have the measured values and data ready
when calling SMA in case the information in this document is not sufficient for troubleshooting.
This document is a supplement to the documentation that is provided with each product. It does not replace any locally
applicable standards or directives. Read and observe all documentation supplied with the product.
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Danger to life due to high voltages in the inverter
When exposed to sunlight, the PV array generates dangerous DC voltage which is present in the DC conductors and
the live components of the inverter. Touching the DC conductors or the live components can lead to lethal electric shocks.
• All work on the inverter must be carried out by qualified persons only.
• Prior to performing any work on the inverter, disconnect the inverter from any voltage sources (see inverter
installation manual).
• Do not touch any live components of the inverter.
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Damage to the inverter due to electrostatic discharge
The internal components of the inverter can be irreparably damaged by electrostatic discharge.
• Ground yourself before touching any components.
SUNNY BOY / SUNNY MINI CENTRAL /
SUNNY TRIPOWER
GUIDELINES FOR ERROR ANALYSIS
Service Manual

SMA Sunny Boy Specifications

General

Operating Temperature Range	-25 °C to +60 °C
Protection Class	IP65
Category	Inverter
Number of MPP Trackers	1 to 2
Cooling	Convection
Warranty	5 to 10 years

Summary

Important Safety Information

DANGER: Danger to life due to high voltages

Warns of lethal electric shock risks from high DC voltage in the inverter.

NOTICE: Damage due to electrostatic discharge

Alerts to irreparable damage from electrostatic discharge to internal inverter components.

1 Error Messages

1.1 Graphic Display

Explains the graphic display elements used for error identification and system status.

1.2 LEDs and Two-Line Display

Details the meaning of LED indicators and the two-line display for error reporting.

2 Error Messages Relating to the PV Array

3 Error Messages Relating to the Utility Grid

4 Error Messages Relating to the Inverter

4.1 Device Errors

Discusses general device errors, their occurrence, and troubleshooting methodology.

4.2 Display Errors

Analyzes display-related errors and the importance of visual context for diagnosis.

4.3 Errors during/after Updates

Covers disturbances and errors that arise during or after firmware or software updates.

5 Miscellaneous Tests

6 Contacting SMA