SYN 100-XH-30 - Controller Growatt - Free user manual and instructions

Product Type	MPPT Solar Charge Controller
Model	SYN 100-XH-30
Brand	Growatt
Max PV Input Voltage	150 VDC
Max PV Input Power	1200 W (12V system) / 2400 W (24V) / 4800 W (48V)
Rated Charge Current	100 A
Battery Voltage (Auto-detect)	12 / 24 / 36 / 48 V
Max. Conversion Efficiency	98%
Standby Power Consumption	< 2 W
Dimensions (L x W x H)	300 x 200 x 100 mm
Weight	3.0 kg
Display	LCD with backlight
Communication Ports	RS485, USB (optional)
Protections	Reverse polarity, overcharge, over-discharge, short circuit, over-temperature
Operating Temperature Range	-20°C to +55°C
Cooling Method	Natural convection
Enclosure Rating	IP20
Compliance	CE, RoHS
Maintenance	Periodic cleaning of heatsink, check wiring connections
Repairability	Designed for professional repair; replaceable fan (if equipped)

Frequently Asked Questions - SYN 100-XH-30 Growatt

What is the maximum PV voltage for the SYN 100-XH-30?

The maximum PV input voltage is 150 VDC. Ensure PV array voltage does not exceed this limit.

How do I set the battery type?

The controller auto-detects battery voltage (12/24/36/48V). For battery type (AGM, Gel, etc.), use the LCD menu to select the appropriate charging profile.

Can I use this controller for a 48V system?

Yes, the SYN 100-XH-30 automatically detects and supports 12V, 24V, 36V, and 48V battery systems.

What is the maximum PV power at 12V?

At 12V, the maximum PV power is 1200W (100A × 12V). For 24V, it's 2400W; for 48V, 4800W.

Does the controller have a display?

Yes, it has an LCD display showing PV voltage, current, battery status, and fault codes.

How do I connect the controller to a monitoring app?

Use the RS485 communication port with a compatible adapter (e.g., Growatt Wi-Fi dongle) to connect to the ShineMonitor app.

What protections are built-in?

The controller includes reverse polarity protection, overcharge, over-discharge, short circuit, and over-temperature protection.

My controller shows error code E01. What does it mean?

Error E01 indicates PV overvoltage. Check that the PV array voltage is below 150V and wiring is correct.

How do I clean the controller?

Disconnect power and use a soft dry cloth to clean the enclosure. Ensure the heatsink is free from dust for proper cooling.

Can I repair the controller myself?

Internal repairs should be performed by a qualified technician. Basic maintenance like terminal tightening and cleaning is user-serviceable.

USER MANUAL SYN 100-XH-30 Growatt

Simple line drawing of a rectangular device with four small components attached to the base (no text or symbols)

(3) Screw for front panel

(8) COM wiring port

(4) Mounting bracket

(9) Waterproof plugs

(5)Grid wiring port

2. Installation

System overview

graph TD
    A["Battery"] --> B["Inverter"]
    B --> C["Backup Box"]
    C --> D["Normal Loads"]
    D --> E["Meter"]
    E --> F["CT"]
    F --> G["Power cable"]
    F --> H["Communication cable"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333
    style F fill:#ffc,stroke:#333
    style G fill:#fcc,stroke:#333
    style H fill:#ffc,stroke:#333

Note:

1. The critical load power depends on the power rating of the inverter and battery.
2. The off-grid function is only available when the XH inverter is paired with the APX battery system and the backup box.

2.1 Electrical parameters

Model name	SYN 100-XH-30
Nominal grid voltage	3W/N/PE230/400 a.c.V
Range of grid voltage	312 ~ 485 a.c.V
Max. grid current	125 a.c.A
Max. continuous grid current	90 a.c.A
Nominal grid frequency	50/60Hz
Range of grid frequency	45 ~ 65Hz
Max. continuous inverter input current	58 a.c.A
Max. backup output current	58 a.c.A

2.3 Installation steps

1. Choose a suitable installation position. The SYN 100-XH-30 can be mounted on a solid wall, a stud frame or a pole and keep it free from direct sunlight.
2. To ensure heat dissipation, please maintain at least a 300 mm clearance between the SYN 100-XH-30 and other objects.
3. Place the mounting bracket against the wall/pole and mark the drilling hole positions.
4. Drill holes and mount the bracket. Ensure that the bracket is securely installed.
5. Install the SYN 100-XH-30 onto the mounting bracket.

Diagram showing a small rectangular object and a brick wall with a small rectangular component, no text or symbols present.

Dimensions (Unit: mm)

Unit: mm

2.4 Required tools

No.	Name	Size	No.	Name	Size
1	Flat-blade screwdriver	2\&5 mm	2	Hammer	/
3	Allen wrench	5 mm	4	Phillips screwdriver	5 mm
5	Electric drill	6 mm	6	Wire stripper	/
7	Pliers	/

3. Recommended cable specifications

Please prepare suitable cables for the connection of the SYN box following the recommended specifications, and the stripped length of the cables is 10 mm.

Cable	Cable outer diameter	Cable length
Grid input cable	4-6 AWG	10 m
Inverter input cable	6-8 AWG	20 m
Load output cable	6-8 AWG	20 m
Communication cable	22-26 AWG	20 m

3.1 Wiring instructions

3.1.1 Connecting SYN 100-XH-30 to the Grid

1. Remove the two screws on the upper cover of the SYN 100-XH-30 to open the upper cover, and do not remove the cover inside the machine.
2. Twist the plastic cover printed with "Grid" counterclockwise, remove the five waterproof plugs, and reserve five holes.
3. Route the five power grid cables (L1/L2/L3/N/PE) through the five holes and connect them to the power grid input terminals and the ground copper bar. Screw torques for tightening the power grid terminals and ground terminals are shown in the following table.
4. Finally, fasten the plastic cover clockwise. The wiring method is shown in Figure 3.

	Screw torque
Power grid terminals	26.5 to 31 in*lbs
Ground terminal	13 in*lbs

Note: PE cables need to be crimped with the O-type terminal in the accessory bag, as shown in Figure 2.

1

Exterior view of a white GROWATT industrial device with three ports (no visible text or symbols beyond branding)

2

3

3.1.2.1 AC power cable connection:

1. Twist the plastic cover printed with "Inverter" counterclockwise; remove the five waterproof plugs, and reserve five holes.
2. Route the five cables of the inverter (L1/L2/L3/N/PE) through the five holes, connect the cables to the inverter breaker terminals (L1/L2/L3/N) and the ground copper bar. Screw torques for tightening the inverter breaker terminals and ground terminals are shown in the following table.
3. Finally, fasten the plastic cover clockwise. The wiring method is shown below:

Connecting the AC cables to the XH Inverter

	Screw torque
Inverter circuit breaker terminals	17.5 in*lbs
Ground terminal	13 in*lbs

3.1.2.2 Communication cable connection:

1. Twist the plastic cover printed with "COM" on the machine counterclockwise; remove the waterproof plug, and reserve the hole.
2. Route the two communication cables (A/B) (the twisted pair cables are recommended) and the two BOX EN cables (EN+/EN-) through the hole, connect them to the CN8 terminals on the control board. Connect the other end of the cables to the COM terminals of the inverter, and tighten the screws. The following table lists the corresponding terminal pins. The wiring method is shown as follows:

Connecting the communication cables to the XH Inverter

COM Port	XH Inverter COM	SYN 100-XH-30 COM	Control Board
RS485 A	PIN 23	PIN 3	CN8
RS485 B	PIN 24	PIN 4
BOX.EN+	PIN 21	PIN 5
BOX.EN-	PIN 22	PIN 6

3.1.3 Connecting SYN 100-XH-30 to the load

1. Twist the plastic cover printed with "Load" counterclockwise, remove the five waterproof plugs, and reserve five holes.
2. Route the five load cables (L1/L2/L3/N/PE) through the five holes, connect them to the load circuit breaker terminals (L1/L2/L3/N) and the ground copper bar. Screw torques for tightening the load breaker terminals and ground terminals are shown in the following table.
3. Finally, fasten the plastic cover clockwise. The wiring method is shown to the right:

	Screw torque
Load breaker terminal	17.5 in*lbs
Ground terminal	13 in*lbs

Connecting to the AC Loads

4. Indicator description

System state	Indicator status
	Green	Red
On-grid Mode	On	Off
Back-up Mode	Blinking (On for 1s, and then Off for 1s)	Off
No communication with the inverter	Off	Blinking (on for 1s, and then Off for 1s)
System fault	Off	On
Firmware upgrade	When the upgrade starts, the yellow light is on or off for 10-20s, and then the yellow light blinks at intervals of 2s (On for 1s and then Off for 1s).

5. System startup and shutdown operations

5.1 To start the system, please perform the following steps:

1. If the inverter is connected to a battery, turn the DC SWITCH on the battery to ON.
2. Set the DC SWITCH on the left side of the inverter to ON.
3. Turn on the inverter input breaker of the SYN 100-XH-30.
4. Enable the Backup Box function via inverter settings. For details, please refer to the XH inverter manual.
5. Turn on the grid breaker
6. If the SYN 100-XH-30 indicator light turns green after completing the preceding steps, it indicates that the SYN 100-XH-30 is functioning properly.
7. If you cannot power on the system with the instructions provided above, please contact Growatt.

5.2 To shut down the system, please perform the following steps:

1. Disconnect the Inverter input breaker and the load input breaker on the SYN 100-XH-30 and then disconnect the power grid breaker.
2. Turn off the DC switch of the inverter.
3. Turn off the DC switch of the battery.
4. Wait for a while and all the indicators of the inverter, the battery, and the SYN 100-XH-30 will go off, indicating that the system is powered off completely.

6. Transfer to the bypass mode manually

When the SYN 100-XH-30 fails, it cannot transfer to the bypass mode automatically. To ensure uninterrupted power supply to loads, it can be switched to the bypass mode manually.

To manually transfer to the bypass mode, please proceed as follows:

1. Shut down the entire system. For details, please refer to Section 5.2.
2. Use a Phillips screwdriver to loosen the limit switch screw on the power bypass switch.
3. Slide the firmware to one end of the inverter switch.

4. Power on the entire system. For details, please refer to section 5.1.

5. Tighten the screw on the limit switch with a torque of 10.5 in* lbs / 1.2 N*m. Turn on the power bypass switch. The operation instructions are shown below.

7. Service and contact

Shenzhen Growatt New Energy Co., Ltd.

4-13/F, Building A, Sino-German (Europe) Industrial Park,

Hangcheng Ave, Bao'an District, Shenzhen, China

T [phone]

E [e-mail]

W www.ginverter.com

Download Manual

Growatt New Energy