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Axpert KING 3KVA, Service Manual

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SERVICE MANUAL 

3KVA/5KVA-230V 

 

20 

V201703A 

3.4 Check the INV full bridge 

Power devices 

INV&PFC IGBT: QB2/QD2/QA1/QC1/QD4/QD3 

QB2      QD2      QA1      QC1      QD4      QD3      Q32      D13      Q30      Q29      Q27     Q28

 

 

Parts 

Attribute 

Reference values 

Failure status 

QB2/QD2 

QA1/QC1 

QD4/QD3

 

Resistor 

GE: 22.5K 

GC: 250k 

CE: 1.1M       

Short or explosion 

Diode 

EC: 0.37V 

CE: OL 

Note1: If one or more of them were damaged, please replace all of them. 

 

 

Summary of Contents for KING 3KVA

Page 1: ...SERVICE MANUAL 3KVA 5KVA 230V 1 V201703A 3KVA 5KVA 230V Service manual...

Page 2: ...ooting 6 2 1 How to do 6 2 2 Check the fault information 6 2 3 Fault condition 7 2 4 Test step 8 3 Checking and measuring guide 9 3 1 Check the battery side components 9 3 2 Check the bus side compone...

Page 3: ...m Checking and measuring guide This part will teach you how to check or repair the inverter by measuring the critical components Assembling guide This part teaches you how to take the board outside an...

Page 4: ...nverter to the model name in the table by comparing the typical characteristics Model name Power rating Solar charger type Solar charger number Off grid Hybrid 3KVA 3KVA 3KW MPPT 1 Off grid 5KVA 5KVA...

Page 5: ...ower supply BUS soft start power supply Inverter Inductance Control board terminer FAN terminer TX1 ISO BUCK Inductance PFC Inductance terminer Grid terminer Output terminer Connect MPPT battery cable...

Page 6: ...to give you the right solution Step 1 Test the battery working mode Before turning on the inverter only connect the battery with the inverter which means no solar input and grid input Turn on the swi...

Page 7: ...the inverter startup If not please check the fan 2 If the LCD couldn t light up and fan doesn t work please disconnect all the wires and open the top cover and then take the main board outside by foll...

Page 8: ...NUAL 3KVA 5KVA 230V 8 V201703A 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 syste...

Page 9: ...Check the battery side components Fuse and capacitors F3 Parts Attribute Reference values Failure status F3 Resistor 0 ohm Open C9 C13 C8 C12 If the capacitors explode as below they need to be replace...

Page 10: ...42V DS 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 DS and GD So...

Page 11: ...TVS1 TVS2 TVS3 TVS4 TVS6 TVS7 TVS8 TVS10 TVS11 TVS12 TVS14 TVS15 TVS16 TVS8 TVS7 TVS6 TVS5 TVS16 TVS15 TVS14 TVS13 TVS12 TVS11 TVS10 TVS9 TVS4 TVS3 TVS2 TVS1 Use multimeter to measure each resistor fi...

Page 12: ...92 The Q47and Q49 are 11 300005 00G TR 2A 50V PNP TO 92NL Q15 Q41 Q16 Q43 The Q41 and Q43 are 11 300012 00G TR 2A 50V NPN TO 92 The Q15 and Q16 are 11 300005 00G TR 2A 50V PNP TO 92NL Parts Attribute...

Page 13: ...CE 8 1k Short or explosion Diode BE 0 656V BC 1 741V CE 0 2V Q55 Q54 Q56 Q57 B E C 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 Q53 Q52 Q...

Page 14: ...xplosion Diode BE 0 632V BC 0 631V CE OL Q55 Q57 Q50 Q53 Resistor BE 12k BC OL CE 277 3k Short or explosion Diode BE 0 632V BC OL CE 1 107V Q60 Q61 D S G The Q60 and Q61 are 11 420007 00G MOSFET 5 8A...

Page 15: ...01703A U9 Parts Attribute Reference values Failure status U9 Resistor Pin13TOPin12 100 300k Pin11 TO Pin12 438k Pin14 TO PIN12 438k Short or explosion Note If you are not sure about these components w...

Page 16: ...CE 35M Short or explosion Diode EC 0 37V 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 val...

Page 17: ...ecking Meanwhile we also need to check the driver tubes of these power tubes Parts Attribute Reference values Failure status R96 R91 R101 R102 Resistor 47 ohm Open or other values Note2 When test the...

Page 18: ...evices BUCK MOSFET and Diode Q32 D13 QB2 QD2 QA1 QC1 QD4 QD3 Q32 D13 Q30 Q29 Q27 Q28 Parts Attribute Reference values Failure status Q32 Resistor GE 22 7 K GC 225 3K CE 1 25M Short or explosion Diode...

Page 19: ...rivers 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 boa...

Page 20: ...IGBT QB2 QD2 QA1 QC1 QD4 QD3 QB2 QD2 QA1 QC1 QD4 QD3 Q32 D13 Q30 Q29 Q27 Q28 Parts Attribute Reference values Failure status QB2 QD2 QA1 QC1 QD4 QD3 Resistor GE 22 5K GC 250k CE 1 1M Short or explosi...

Page 21: ...R137 Resistor 47 ohm Open or other values R151 R189 Resistor 22 ohm Open or other values R153 R181 Resistor 10 ohm Open or other values Optocoupler U6 U12 U2 U4 U3 U1 U11 Pin1 Parts Attribute Referenc...

Page 22: ...s Parts Attribute Reference values Failure status Q2 Q3 Q4 Q10 Q11 Q13 Resistor GS 4 964k GD 37 2k DS 260 0k Short or explosion Diode SD 0 45V DS OL D8 D49 D48 D47 D24 D4 Resistor to 1 07k to 1 Meg Sh...

Page 23: ...on the two sides of bottom case and push up the case cover Then remove screw on the top of the display panel Now the display can be removed from the bottom case Then pull out the cable from the remote...

Page 24: ...ove all boards Remove the two screws and the signal cables then take out the COMM board Remove the two screws then put the COMM board on the side Remove the two copper pillars Remove the four screws y...

Page 25: ...screws and two black cables you can take the IND board off Remove the two screws and the signal cables you can take the control board off Remove all cables here AC In Out cables GND cables Signal cab...

Page 26: ...ws and then you can take the main board out Note There are ten screws to fix the main board Note When you put the new control board on the main board please make sure that the connection is correct an...

Page 27: ...16 501026 XXG IND board 16 501058 XXG REMOTE COMM board 16 501025 XXG MPPT board 16 500689 XXG CN4 CN2 P1 P2 P6 P5 CN1 CN2 CN8 CN4 AXPERT KING 3KW With MPPT Model FAN1 FAN2 CN1 PAR communication board...

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