Axpert KING 3KVA - Check the INV Full Bridge

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.