N o LE D s
are on at
C o ntroller,
D isp lay is
to tally
blan k.
A t P o w e r
C e n te r,
m o ve
o ve rrid e
s w itc h
fro m
A u to to
S e rv ic e .
D o
o ve rrid e
s w itc h e s
o p e ra te ?
Tu rn o ff p ow e r a n d
re m o v e 3 a m p fu se ,
c he ck fo r c o n tin u ity.
Is th e re c o n tin u ity?
C h e c k v o ltag e to p rim a ry
o f tra n s fo rm e r: Is p rim a ry
11 0 VA C ?
C h e c k c irc uit b re ak e r a n d
S ys te m P o w e r w ire s .
C h e c k J VA s fo r sp lic e d
w ire s , w a te r d a m a g e o r
in co rre ct vo lta g e . P lu g
J VA s in on e at a tim e , if
fu s e b lo w s a g a in re p la ce
th a t J VA .
W ire s a re b ro k e n
o r in w ro ng te rm ina ls .
N o
Ye s
C o n tro lle r P C B w ill
n e e d to b e re pla c e d .
T h e p ow e r s u p ply is d a m a g e d
a n d th e P C B a t th e P o w e r
C e n te r w ill n ee d to b e re p la ce d .
Ye s
N o
N o
Ye s
Ye s
N o
R e p la ce
tra n s fo rm e r.
Ye s
N o
N o
Ye s
U n p lu g a ll JVA s a n d
re p la ce fu se , a n d tu rn o n
p o w e r. D o e s fu se fa il
a g a in ?
R e m o v e , a lig n a n d c a re fu lly
re in s ta ll th e P P D ch ip . Te st
s ys te m , if s till n o t o p e ra b le ,
re p la ce P ow e r C e n te r P C B a n d
P P D ch ip .
R e m o v e
b o th R e la y
D riv e r C h ip s
a n d re p la c e
th e fu s e .
If fu s e b lo w s
a g a in ; P C B is
d a m a g e d , if
fu s e d o e sn 't
b lo w, D rive r
C h ip s a re b a d ,
re p la ce
a p p ro pria te
c om p o ne n t.
Ye s
N o
C h e c k v o ltag e
a cro s s s e co n da ry
o f tra n s fo rm e r
(tw o ye llo w w ire s o f
o ra n g e 3-p in
c on n e cto r)
Is v o lta g e 2 4 VA C ?
AquaLink
®
RS Troubleshooting
Controller Inoperable, Display Blank . . .
16
