10-18
10.4 Inverter Troubleshooting
10.4.1 Quick troubleshooting of inverter
IN V F a u lt
V is u a lly c h e c k c o n tro lle r
a n d D riv e b o a rd s
*to n e x t p a g e
C h e c k b u rn t a n d
d a m a g e d p a rts
C o n s u lt w ith th e s u p p lie r
R e p la c e fu s e
C o n s u lt w ith th e s u p p lie r
C o n s u lt w ith th e s u p p lie r
C h e c k d is p la y e d fa u lt
m e s s a g e s
R e p la c e th e p re -c h a rg e
re s is to r
C h e c k te rm in a ls a n d
w irin g
C o n s u lt w ith th e s u p p lie r
P e rfo rm d e ta ile d c h e c k a n d
c o n s u lt w ith th e s u p p lie r
Is fa u lt k n o w n ?
S y m p to m s o th e r th a n
b u rn t/d a m a g e d p a rts o r
fu s e b lo w n in th e in v e rte r ?
A n y S y m p to m s b u rn t o r
d a m a g e p a rts ?
M a in c irc u it in ta c t?
F a u lt s ig n a l?
Is fu s e O K
?
Is th e m a in c irc u it IG B T
O K ?
A n y v is u a l
a b n o rm a litie s ?
A re d is p la y s a n d
in d ic a to rs o f th e
o p e ra tin g u n it w o rk in g
n o rm a lly ?
Is + 5 V c o n tro l v o lta g e
c o rre c t?
Is th e D C in p u t v o lta g e
c o n tro llin g th e p o w e r
c o rre c t
A n y fa u lt d is p la y ?
W h a t’s th e m e s s a g e ?
Is L E D lit?
R e p la c e c o n tro l b o a rd
a n d d ig ita l o p e ra tin g u n it
Is th e e rro r e lim in a te d
a fte r re p la c in g c o n tro l
b o a rd ?
Y E S
N O
N O
Y E S
N O
N O
N O
Y E S
Y E S
Y E S
Y E S
N O
N O
N O
Y E S
Y E S
Y E S
Y E S
N O
N O
Y E S
N O
Y E S
N O
Y E S
N O
Y E S
N O
A p p ly th e p o w e r