Ablerex 3 MS series - 4.7. Quick Troubleshooting Flowchart

22
AC fuse is burn
Q12 short
PFC fault
1. Replace Q12, U6
2. check BD1, D19
and R116
YES
Q13,Q14
short
INVERTER fault
1.replace Q13, Q14,
U7, U8
2.Check R118 R120,
D24 and D25
NO
NO
DC fuse is burn
UPS MALFUNCTION
Q15-Q20
short or low
resistance
Booster fault.
1. Replace Q15-Q20,
R109, R110, R123,
R124, 132, R138,
U9 and/or F1.
2. CHECK D30-D33
and T2.
YES
if the UPS still fails to work. Please refer to the
detail trouble shooting guide
NO
4.7 Quick trouble shooting
YES