Sunny Boy

The Sunny Boy is a transformerless PV inverter with 2 MPP trackers, which convert the direct current of the PV modules into grid-compliant alternating current and feeds it into the utility grid.

Design of the Sunny Boy

Position	Explanation
A	Upper enclosure lid
B	Type label The type label uniquely identifies the inverter. You will require the information on the type label to use the product safely and when seeking customer support from the SMA Service Line. You will find the following information on the type label: Device type (Model) Serial number (Serial No.) Date of manufacture Device-specific characteristics
C	Additional label with details for registration in Sunny Portal: Internet address of the PV System Setup Assistant Identification key (PIC) Registration ID (RID)
D	LEDs The LEDs indicate the operating state of the inverter ( > LED Signals).
E	Display The display shows the current operating data and events or errors ( > Display Overview).
F	Electronic Solar Switch (ESS)* The ESS and the DC connectors together form a DC load-break switch. When plugged in, the ESS forms a conductive path between the PV array and the inverter. Removing the ESS interrupts the DC electric circuit and removing all DC connectors disconnects the PV array completely from the inverter.
G	Lower enclosure lid

* Optional

Symbols on the inverter, the type label and the ESS

Symbol	Explanation
	Inverter Together with the green LED, this symbol indicates the operating state of the inverter.
	Observe the documentation Together with the red LED, this symbol indicates an error (for troubleshooting, see the service manual at www.SMA-Solar.com).
	BLUETOOTH Together with the blue LED, the symbol indicates active communication via BLUETOOTH.
	Danger This symbol indicates that the inverter must be additionally grounded if additional grounding or equipotential bonding is required at the installation site ( > Connecting Additional Grounding).
	QR Code Links to additional information on the inverter can be found at www.SMA-Solar.com.
	Operating the inverter without the lower enclosure lid is prohibited. Always operate the inverter with the lower enclosure lid.
	Operating principle of the ESS: If the ESS is plugged in, the DC electric circuit is closed. To interrupt the DC electric circuit, you must perform the following steps in the given order: Remove the ESS. Unlock and remove all DC connectors.
	Danger to life due to electric shock The product operates at high voltages. All work on the product must be carried out by qualified persons only.
	Risk of burns due to hot surfaces The product can get hot during operation. Avoid contact during operation. Allow the product to cool down sufficiently before carrying out any work.
	Observe the documentation Observe all documentation supplied with the product.
	Direct current
	The product does not have a transformer.
	Alternating current
	WEEE designation Do not dispose of the product together with the household waste but in accordance with the locally applicable disposal regulations for electronic waste.
	CE marking The product complies with the requirements of the applicable EU directives.
	Device class ID The product is equipped with a wireless component and complies with device class 2.
	Degree of protection IP65 The product is protected against dust intrusion and water jets from any angle.
	The product is suitable for outdoor installation.
	Certified safety The product is VDE-tested and complies with the requirements of the German Equipment and Product Safety Act.
	RCM (Regulatory Compliance Mark) The product complies with the requirements of the applicable Australian standards.