1. General information 1.1 Getting start This manual is used as a checking and repairing guide for 5KVA-220V/230V model. Before read this manual, it’s better to have some electrical or electronic background knowledge. With this guide, you can fix the inverter by yourself firstly.
SERVICE MANUAL 5KVA-220V/230V 1.3 Inverter family This service manual includes different models of the inverter, the table as below contains some important parameters with different models. These models names are only neutral names; please match the real model name of your inverter to the model name in the table by comparing the typical characteristics.
SERVICE MANUAL 5KVA-220V/230V 1.5 PCB overview Main board: Control board Connect terminer PAR board Load connection Grid connection Battery connection Power supply Control board: To PAR communication To MPPT board To COMM board board V201703A...
SERVICE MANUAL 5KVA-220V/230V MPPT board: To IND board To Main board To Main board To CNTL board To Main board To Main board 2. Troubleshooting 2.1 How to do When the inverter was faulty, normally there are two main symptoms: ...
SERVICE MANUAL 5KVA-220V/230V grid input. Turn on the switch, the LCD will light up and wait for the battery connecting to load. If the connection is failed, please record the fault code. Step 2: Test the grid charging mode. Before turning on the inverter, only connect the utility and battery with the inverter. Without press any buttons, the LCD will light up.
SERVICE MANUAL 5KVA-220V/230V 2.4 Test step After replacing all defected components, testing steps can be used to confirm the repair result and the reliability of the Inverter. Set up the testing system as below: V201703A...
SERVICE MANUAL 5KVA-220V/230V 3. Checking and measuring guide 3.1 Check the battery side components Fuse and capacitors Parts Attribute Reference values Failure status Resistor 0 ohm Open C9/C13/C8/C12 If the capacitors explode as below, they need to be replaced. V201703A...
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SERVICE MANUAL 5KVA-220V/230V Power devices DC/DC MOSFET: Q13/Q18/Q23 & Q11/Q17/Q20 & Q21/Q22/Q12 & Q26/Q25/Q14 Q13 Q18 Q23 Q11 Q17 Q20 Q21 Q22 Q12 Q26 Q25 Q14 Parts Attribute Reference values Failure status All: Resistor GS: 11.7K Short or explosion GD: 250K DS: 0.55M...
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SERVICE MANUAL 5KVA-220V/230V 3.1.1. Drivers (This part is only used for repair checking) Note: Drivers usually need to be checked when users want to repair the boards. Because when power devices were damaged, the high voltage will rush to driver circuit through the gates of power devices.
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SERVICE MANUAL 5KVA-220V/230V The Q46and Q48 are 11-300012-00G (TR 2A 50V NPN TO-92) The Q47and Q49 are 11-300005-00G (TR 2A 50V PNP TO-92NL) The Q41and Q43 are 11-300012-00G (TR 2A 50V NPN TO-92) The Q15and Q16 are 11-300005-00G (TR 2A 50V PNP TO-92NL)
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SERVICE MANUAL 5KVA-220V/230V BC: 1.741V CE: 0.2V B C E The Q54and Q56 are 11-400011-00G (TR 2A 50V NPN SOT-89) The Q55and Q57 are 11-400010-00G (TR 3A 50V PNP SOT-89) B C E The Q51and Q52 are 11-400011-00G (TR 2A 50V NPN SOT-89)
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SERVICE MANUAL 5KVA-220V/230V Q55/Q57/Q50/Q53 Resistor BE: 12k Short or explosion BC: OL CE: 277.3k Diode BE: 0.632V BC: OL CE: 1.107V The Q60 and Q61 are 11-420007-00G (MOSFET 5.8A 30V SOT-23) Parts Attribute Reference values Failure status Q60/Q61 Resistor GS: 4.185k Short or explosion GD: 12.08k...
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SERVICE MANUAL 5KVA-220V/230V Parts Attribute Reference values Failure status Resistor Pin13TOPin12:100~300k Short or explosion Pin11TOPin12: 438k Pin14 TO PIN12: 438k Note: If you are not sure about these components, we recommend you replacing them all. V201703A...
SERVICE MANUAL 5KVA-220V/230V 3.2 Check the bus side components Power devices DC/DC IGBT: Q30/Q29/Q27/Q28 Q29 Q27 Parts Attribute Reference values Failure status Q27/Q28/Q29/Q30 Resistor GE: 47.8 ohm Short or explosion GC: 196.3k CE:400-500K Diode EC: 0.39V CE: OL Note1: When you use the multimeter to measure the resistor of the transistor, because of the capacitor in the circuit, it will cause the changing of the values when you measure the CE and GE.
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SERVICE MANUAL 5KVA-220V/230V Drivers (This part is only used for repair checking) Meanwhile, we also need to check the driver tubes of these power tubes. Parts Attribute Reference values Failure status R91/R102/R96/R101 Resistor 47 ohm Open or other values Note2: When test the diode; please remove the R90/R99/R94/R97 from the board, or the test result is not right.
SERVICE MANUAL 5KVA-220V/230V 3.3 Check the buck circuit Power devices BUCK MOSFET and Diode: Q32 / D13 Q29 Q27 Parts Attribute Reference values Failure status Resistor GE: 22.7 K Short or explosion GC: 259K CE: 10-20M Diode SD or CE: 0.406V...
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SERVICE MANUAL 5KVA-220V/230V Drivers (This part is only used for repair checking) Parts Attribute Reference values Failure status R125 Resistor 47 ohm Open or other values Note: When test the diode; please remove the R124 from the board, ortherwise the test result is not right.
SERVICE MANUAL 5KVA-220V/230V 3.4 Check the INV full bridge Power devices INV IGBT: QB2/QD2/QA1/QC1 Q29 Q27 Parts Attribute Reference values Failure status QB2/QD2/QA1/QC1 Resistor GE: 23.3K Short or explosion GC: 250k CE: 38M Diode EC: 0.4V CE: OL Note1: If one or more of them were damaged, please replace all of them.
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SERVICE MANUAL 5KVA-220V/230V Drivers Parts Attribute Reference values Failure status R144/R48/R140/R137 Resistor 47 ohm Open or other values Optocoupler: U12/U2/U4/U1/U3 Pin1 Parts Attribute Reference values Failure status U1/U2/U3/U4/U12 Resistor PIN8 TO PIN5: 0.922M Short or explosion PIN7 TO PIN5: 0.953M...
SERVICE MANUAL 5KVA-220V/230V 3.5 Check the MPPT board Power devices REC1 Parts Attribute Reference values Failure status Q1, Q2, Resistor GS: 25k Short or explosion GD: 218K DS: OL Diode SD: 0.381V DS: OL Resistor + to -: 202.8k Short or explosion...
SERVICE MANUAL 5KVA-220V/230V Take out the control board. Note: When you put the new control board on the main board, please make sure that the connection is correct and tighten. Don’t forget to put the screws and cables back. 4.3 Remove the fan paper and the SCR board and the MPPT board.
SERVICE MANUAL 5KVA-220V/230V Remove the screws and the signal cables of the MPPT board , and you can take the MPPT board paper off. 4.4 Remove the main board. Note: Before replace the main board, please follow 4.2 ~ 4.4, remove the control board, MPPT board, and fans first.
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SERVICE MANUAL 5KVA-220V/230V Remove the power cables of AC output and input. Brown cable is line; blue cable is neutral. Do not make the wrong polarity. AC input cables V201703A...
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SERVICE MANUAL 5KVA-220V/230V Remove the fans cables. The fans cables V201703A...
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SERVICE MANUAL 5KVA-220V/230V Remove the screws and the signal cables on the main board. And then you can take the main board out. Note: There are nine screws to fix the main board. V201703A...