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Deye SUN-5K-SG User Manual

Deye SUN-5K-SG
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5KW Storage Inverter Repairing Guide
SUN-5K-SG Repair Guide
When you see this sub-guide, it indicates that there is a problem
with the machine and needs to open the machine housing for
service. Before opening the Inverter Shell, the inverter's power
cables (including AC and DC) need to be disconnected altogether.
Wait at least 5 minutes before you can proceed.
1. Remove the screws counterclockwise
2. After removing the housing, carefully remove the shell, the housing liquid crystal
plate is connected to the inside of the machine. Take a photo of the interior and record
the location of each harness to prevent errors during installation and send us photos.
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Deye SUN-5K-SG Specifications

General IconGeneral
TypeHybrid Inverter
Rated Power5kW
Max. DC Input Power6.5kW
Max. DC Input Voltage500V
Number of MPPT Trackers2
Nominal AC Output Power5kW
Max. AC Output Power5.5kW
AC Voltage Range180-280V
THDi<3%
AC Grid Frequency Range50/60Hz
Battery Voltage Range40-60V
Max. Charging Current100A
Max. Discharging Current100A
Protection DegreeIP65
TopologyTransformerless
Nominal AC Voltage230 V
Power Factor0.8 leading to 0.8 lagging
CommunicationRS485
Cooling MethodNatural Cooling
Operating Temperature Range-40~60°C

Summary

Inverter Service Preparation

Inverter Opening and Safety Precautions

Steps for safely opening the inverter housing and disconnecting power before service.

Troubleshooting DC Input and Insulation Errors

F-01 DC Input Polarity Reverse Fault

Diagnose reverse DC input polarity fault by checking PV panel connections.

F-02 DC Insulation Impedance Fault

Address DC insulation impedance fault by checking grounding and internal cables.

F-03 DC Leakage Current Fault

Troubleshoot DC leakage current fault by checking fuse and potential component damage.

Troubleshooting Ground, Memory, and Softstart Errors

F-04 Ground Fault GFDI

Identify ground fault by checking solar panel output terminals connection.

F-05 Read Memory Error

Address memory read errors by restarting and checking connections.

F-06 Write Memory Error

Resolve memory write errors by restarting and checking connections.

F-07 DC/DC Softstart Fault

Troubleshoot DC/DC softstart fault caused by low bus voltage.

F-08 GFDI Grounding Touch Failure

Note: GFDI grounding touch failure is not related to this machine.

Troubleshooting IGBT, Aux Power, and AC Contactor Errors

F-09 IGBT Damaged by Excessive Drop Voltage

Note: IGBT damage by voltage drop is not related to this machine.

F-10 Aux Power Board Failure

Diagnose Aux Power Board failure by checking MCU 12V power supply.

F-11 AC Main Contactor Errors

Troubleshoot AC main contactor errors by restarting the inverter.

F-12 AC Auxiliary Contactor Errors

Resolve AC auxiliary contactor errors by restarting the inverter.

F-13 Reserved

Indicates working mode change, phase loss, or relay issues.

Troubleshooting Firmware, Leakage, and Overcurrent Errors

F-14 DC Firmware Over Current

Note: DC firmware over current is not related to this machine.

F-15 AC Firmware Over Current

Note: AC firmware over current is not related to this machine.

F-16 GFCI(RCD) AC Leakage Current Fault

Note: GFCI AC leakage current fault is not related to this machine.

F-17 Three Phase Current, Over-current Fault

Note: Three phase over-current fault is not related to this machine.

F-18 Read Memory Error

Address AC current over max-limit by checking load power and firmware.

F-19 Read Memory Error

Note: This memory error is not related to this machine.

F-20 DC Over Current Fault Out of Hardware

Troubleshoot DC over current hardware fault by checking PV/battery connections.

F-21 DC Leakage Flow Fault

Note: DC leakage flow fault is not related to this machine.

Troubleshooting Tz, AC, and DC Busbar Errors

F-22 Tz_EmergSStop_Fault

Address Tz Emergency Stop Fault by checking GND connection.

F-23 AC Leakage Current is Transient Over Current

Diagnose AC leakage current transient fault by checking leakage sensor.

F-24 DC Insulation Impedance Failure

Resolve DC insulation impedance failure by checking PV panel and PE cable connections.

F-25 DC Feedback Fault

Note: DC feedback fault is not related to this machine.

F-26 The DC Busbar is Unbalanced

Note: DC busbar imbalance is not related to this machine.

F-27 DC End Insulation Error

Note: DC end insulation error is not related to this machine.

F-28 Inverter 1 DC High Fault

Note: Inverter 1 DC high fault is not related to this machine.

F-29 Parallel CANBus Fault

Troubleshoot parallel CANBus fault by checking settings and connections.

F-30 AC Main Contactor Failure

Note: AC main contactor failure is not related to this machine.

F-31 DC Boost Soft Start

Note: DC boost soft start is not related to this machine.

Troubleshooting Inverter High Fault and Grid Errors

F-32 Inverter 2 DC High Fault

Note: Inverter 2 DC high fault is not related to this machine.

F-33 AC Over Current

Note: AC over current is not related to this machine.

F-34 AC Current Over Load

Note: AC current over load is not related to this machine.

F-35 No AC Grid

Address 'No AC Grid' fault by confirming grid connection and status.

F-36 AC Grid Phase Error

Note: AC grid phase error is not related to this machine.

F-37 AC Three-phase Voltage Unbalance Failure

Note: AC voltage unbalance failure is not related to this machine.

F-38 AC Three-phase Current Unbalance Failure

Note: AC current unbalance failure is not related to this machine.

F-39 AC Over Current (One Cycle)

Note: AC over current (one cycle) is not related to this machine.

F-40 DC Over Current

Note: DC over current is not related to this machine.

Troubleshooting Parallel, AC Voltage, and Frequency Errors

F-41 Parallel System Stop

Address parallel system stop faults due to other inverter issues.

F-42 AC Line Low Voltage

Troubleshoot AC line low voltage by checking AC voltage and cable connections.

F-43 AC Line V,W Over Voltage

Note: AC line V,W over voltage is not related to this machine.

F-44 AC Line V,W Low Voltage

Note: AC line V,W low voltage is not related to this machine.

F-45 AC Line U,V Over Voltage

Note: AC line U,V over voltage is not related to this machine.

F-46/49 Backup Battery Fault

Address backup battery faults by checking capacity and connections.

F-47 AC Over Frequency

Troubleshoot AC over frequency by checking frequency and cable connections.

F-48 AC Lower Frequency

Note: AC lower frequency is not related to this machine.

Troubleshooting Backup Battery and DC Busbar Errors

F-49/46 Backup Battery Fault

Address backup battery faults by checking capacity and connections.

F-50 V Phase Grid Current DC Component Over Current

Note: V phase grid current fault is not related to this machine.

F-51 W Phase Grid Current DC Component Over Current

Note: W phase grid current fault is not related to this machine.

F-52 AC Inductor B, Phase Current DC Current High

Note: AC inductor B current fault is not related to this machine.

F-53 Read Memory Error

Note: This memory error is not related to this machine.

F-54 AC Inductor C, Phase Current DC Current High

Note: AC inductor C current fault is not related to this machine.

F-55 DC Busbar Voltage is Too High

Address high DC busbar voltage by checking PV or battery voltage.

F-56 DC Busbar Voltage is Too Low

Resolve low DC busbar voltage by checking battery voltage.

Troubleshooting AC Irrigation, Battery, and Reactor Errors

F-57 AC Reverse Irrigation

Note: AC reverse irrigation is not related to this machine.

F-58 Battery Over Current

Check battery discharge current is within allowed range.

F-59 AC Grid V Over Current

Note: AC grid V over current is not related to this machine.

F-60 AC Grid W Over Current

Note: AC grid W over current is not related to this machine.

F-61 Reactor A Phase Over Current

Note: Reactor A phase over current is not related to this machine.

F-62 Reactor B Phase Over Current

Note: Reactor B phase over current is not related to this machine.

F-63 ARC Fault

Address ARC fault by checking PV module cable connection.

F-64 Heat Sink High Temperature Failure

Resolve heat sink high temperature by checking environment and restarting.

IGBT and Diode Testing Guide

IGBT Measurement Procedure

Steps for measuring IGBT and diode voltage drop using a multimeter.

IGBT Testing with Multimeter

Instructions for setting multimeter and measuring IGBT S-level and D-level.

Boost Diode Testing

Procedure for measuring the voltage drop of the boost diode.

IGBT Component Identification and Replacement

IGBT Drive Component Identification

Identify and replace IGBT drive components and resistors.

IGBT Replacement Guidelines

Ensure all damaged IGBTs are replaced and pay attention to component direction.

Post-Replacement Checks and Inductor Testing

Checking Marked Components for IGBT Replacement

Replace marked components corresponding to damaged IGBTs.

Inductor Harness and Shell Contact Check

Verify inductor harness integrity and check for direct contact with the shell.

Motherboard Assembly and Harness Connection

Installing the Control Panel

Procedure for installing the control panel and plugging in harnesses.

Connecting Inductive Wires

Insert inductive wire terminals into motherboard positions, following line labels.

Internal Component Assembly and Wiring

Connecting 60P Gray Line

Connect the 60P gray line to the motherboard and control board.

Securing Capacitor Plate and Cables

Replace capacitor plate and secure cables with screws.

Final Assembly and Testing

Connecting Button Switch and AC Wires

Pass button switch cable and connect AC wire, yellow green line.

Installing Top Cover and Testing

Install the top cover, test the machine, and seek service if problems persist.

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