© 1995-2009 Energy Saving Products Ltd.
Module CTS Check List & Trouble Shooting
EPC Motor/Low Air Flow (2/4)
Module CTS Check List & Trouble Shooting (2/4) - EPC Motor/Low Air Flow
St
ar
t
Green
light
pr
esent on
Mo
tor
Con
tr
ol Boa
rd
(MCB)
Op
en
door
s t
o
in
spect
Cont
roller
R
etu
rn
to
st
ar
t
to
en
sur
e mo
tor
is
run
nin
g pr
operly
En
sur
e
break
er
is
tu
rn
ed
on
Chec
k f
or
brok
en or
loose wires
fr
om
br
ea
ker
to Un
it
En
sur
e
4 Pin In
put
Volt
age Plug
is
pr
op
erly con
nect
ed t
o
Prin
ted Cir
cu
it Boar
d
(PCB)
Ver
ify tha
t the
in
put line v
olt
age
is
pr
esen
t on
the PCB via
the
“L
”
an
d
“N”
scre
w
termin
als on
the
auxilia
ry po
w
er
bloc
k.
En
sur
e tha
t
4 Pin
In
put V
olt
age Plug
is
pr
op
er
ly con
nect
ed
to MCB.
On
ce v
olta
ge
pr
esence is v
erified on
PCB,
shut
po
w
er of
f
to the u
nit
Allo
w
5 minutes
for
ca
pa
cit
or
s
to
dissipa
te,
then
recon
nect po
w
er
Allo
w
1-2 minutes
for
the ca
pa
cit
or
s
to c
ha
rge.
Gr
een
light on
?
Orange
flashin
g light
pr
esen
t
on
MCB?
En
sur
e the
4 Pin Plug
fr
om Mo
tor is pr
op
erly
con
nect
ed t
o MCB
En
sur
e tha
t
9 wire
plug
is con
nect
ed t
o MCB
an
d PCB (R
ed
Wir
e on
PCB sid
e lin
es up with
W1 t
ermin
al on
PCB)
To elimin
ate outside
var
ia
bles,
remo
ve all
thermos
tat wires
fr
om the PCB
En
sur
e tha
t y
ou
ha
ve
24v bein
g sup
plied b
y
the
Transformer
.
This
ca
n be don
e via
the
“R”
a
nd
“C”
ther
mosta
t t
er
min
als
on
the PCB
24v present
on
Cir
cu
it Boa
rd?
R
ef
er t
o
2
4V T
rouble
Shooting
Se
t syst
em f
or
oper
ation
b
y pla
cin
g a
jumper
be
tw
een the
R
an
d
Y2
termin
als on
the PCB. W
ait a
fe
w
secon
ds a
s the EPC
mo
tor r
amp
s up slo
wly
.
N
Y
Y
N
In
dica
tes Con
tr
oller
ha
s en
tered a
n
unnatural s
tate
a
nd
gon
e in
to sa
fe mode
to pr
ev
en
t da
ma
ge
to the Mo
tor
Con
tr
ol Boar
d
N
Fan
R
un
nin
g?
Finished
Y
Y
Ca
ll T
ec
h Su
ppor
t
1-888-652-22
19
N
N
PCB = Printed Circuit Board
MCB = Motor Control Board
Y
Y
Y
Ver
ify tha
t
in
put v
olt
age is
pr
esen
t on
PCB via
“L
” a
nd
“N” scre
w
termin
als.
N
N
Trouble Shooting: EPC Motor not Running
St
ar
t
Se
t syst
em
for
oper
ation
Add more
R
eturn Air
En
sur
e un
it is r
un
nin
g
on
highes
t speed
.
Con
fir
m b
y c
hec
kin
g tha
t
ther
e is
24v
be
tw
een
C
a
nd
High Speed T
erminal
(Y2 f
or
Coolin
g,
W2 f
or
Heatin
g)
R
epair
fle
xible du
ct
or
ad
d more v
ents t
o
compen
sat
e f
or
lo
w
er
a
irflo
w
En
sur
e tha
t
R
eturn
Air
is n
ot bloc
ked a
nd
pr
op
erly sized. Sized
corr
ectly?
Air
flo
w ma
y b
e
reduced b
y
15-20%
unless corr
ect
ed
En
sur
e
Dip Settings
are se
t pr
op
erly f
or
desired
CFM output
En
sur
e a
ll
dam
per
s
are fu
lly open
Y
N
R
ef
er t
o
24v
Troubleshooting
Guide
R
ef
er t
o
Dip Setting
Pages
for
pr
op
er
dip se
ttin
gs
N
Chec
k
syst
em, ar
e
compon
en
ts
clean
and not
res
trict
ed
?
Y
Clean
dir
ty
compon
ents a
nd
ver
ify air
flo
w
N
Y
N
Y
N
Y
Chec
k tha
t the cor
rect
numb
er of
vents
a
re
pr
esen
t on
syst
em
In
spect fle
x du
ct f
or
sharp bends
N
Add or remo
ve
vents
a
s n
ecessa
ry,
R
ef
er t
o
HE Design
Manual
for
corr
ect
pa
rame
ter
s
Y
Y
In
spect fle
x du
ct f
or
damage
R
epair/R
eplace
da
ma
ged du
ct
N
In
spect
main plenum
con
nection
s, br
an
ches
an
d elbo
ws f
or
leaks
N
Y
Seal
a
ny
leakin
g
con
nection
s,
br
an
ches or
elbo
ws
Ca
ll T
ec
h Su
ppor
t
1-888-652-22
19
N
Y
PCB = Printed Circuit Board
MCB = Motor Control Board
En
sur
e
min. of 1
8”
str
aight du
ct
bef
or
e fir
st
elbo
w or t
ee.
Cor
rect?
Trouble Shooting: Low Ai
r Flow
Ca
ll T
ec
h Su
ppor
t
1-888-652-22
19