SERVICING
39
- C
o
nn
ec
to
rs
a
re
or
ien
ted
"
d
ow
n
"
(o
r a
s
re
c
o
m
m
end
ed
b
y
e
q
u
ipm
ent
m
a
nu
fa
c
ture
r)
.-
A
rr
a
n
g
e har
ne
s
s
e
s
w
it
h
"
d
ri
p
lo
op
"
u
n
d
e
r m
o
to
r.
-
Is co
n
d
ens
a
te
d
ra
in p
lu
gg
e
d?
-
Ch
ec
k
f
or
l
ow
a
ir
fl
ow
(t
oo m
u
c
h
l
a
ten
t ca
p
a
c
it
y
).
-
Ch
e
c
k
fo
r
und
er
c
h
a
rge
d
c
o
n
d
it
io
n
.
-
Ch
e
c
k
and
pl
u
g
lea
k
s
in
re
tu
rn
duc
ts
,
c
abi
n
e
t.
*M
o
is
tu
re C
h
ec
k
Im
por
tan
t
N
o
te:
U
s
in
g
th
e w
ron
g
mo
tor
/co
n
tro
l mo
d
u
le v
o
id
s a
ll pr
o
d
uc
t wa
rr
a
n
ti
es
a
n
d
ma
y
pro
d
uc
e
un
ex
p
e
c
te
d
re
s
u
lt
s.
Not
e
:
Yo
u m
u
s
t us
e
t
h
e c
o
rr
ec
t
rep
lac
e
m
e
n
t
c
ont
rol
/m
o
to
r m
odu
le
s
in
c
e
th
e
y
ar
e f
a
c
to
ry
pr
o
g
ra
m
m
ed
f
o
r s
p
ec
if
ic
ope
ra
ti
n
g
m
ode
s
. E
v
e
n
t
hou
g
h t
h
e
y
lo
ok
a
lik
e
, dif
fe
re
nt
m
o
du
le
s
ma
y
h
a
ve
co
m
p
le
te
ly
d
iffe
re
n
t
fu
nc
ti
ona
lit
y
. T
h
e
E
C
M
v
a
ri
abl
e
s
p
eed
m
o
to
rs
a
re
c
CHART CONTINUED ON NEXT PAGE
S
y
m
p
to
m
F
au
lt
Desc
ri
p
ti
o
n
(s)
P
o
ssi
b
le Cau
s
e
s
Co
rre
ct
iv
e A
c
ti
o
n
Ca
ut
io
n
s
an
d
No
te
s
- M
o
to
r r
o
ck
s
s
lig
h
tl
y
w
h
en s
tar
ti
ng
.
-
Th
is
i
s
no
rm
a
l s
ta
rt-
u
p
fo
r
v
a
ri
abl
e s
p
eed m
o
to
r.
----
--
--
--
--
-
N
o
mo
v
e
me
n
t.
-
M
a
nual
dis
c
o
nnec
t s
w
it
c
h
of
f or
d
oor
s
w
it
c
h
open
.
-
B
low
n
f
u
s
e
or
c
ir
c
uit
br
eak
e
r.
-
2
4
V
a
c w
ir
e
s mi
sw
ir
e
d
.
-
Uns
eat
e
d
pin
s
i
n
w
ir
ing
h
a
rnes
s
c
onnec
to
rs
.
-
B
a
d m
o
to
r/
c
ont
ro
l m
odul
e.
-
M
o
is
tu
re
pr
es
ent
in
m
o
to
r or
c
ont
ro
l
m
odul
e.
-
Chec
k
230
V
a
c
pow
e
r a
t m
o
to
r.
-
Chec
k
l
o
w
v
o
lt
a
ge (
24 V
a
c
R t
o
C)
at
m
o
to
r.
-
Chec
k
l
o
w
v
o
lt
a
ge c
o
nnec
ti
on
s
(
G
, Y
, W
, R
, C
) a
t m
o
to
r.
-
Chec
k
f
o
r un
s
eat
e
d
pi
ns
i
n
c
onnec
to
rs
on m
o
to
r har
nes
s
.
-
Te
s
t w
it
h
a t
e
m
por
ar
y
j
u
m
p
e
r b
e
tw
ee
n R -
G
.
-
-
T
u
rn
pow
e
r O
F
F
pr
ior
t
o
r
epa
ir
.
W
a
it
5
m
in
u
tes
a
fter
di
s
c
onne
c
ti
ng power
bef
or
e
o
p
e
n
ing
m
o
to
r.
-
Handl
e el
ec
tr
on
ic
m
o
to
r/
c
ont
ro
l
w
it
h
c
a
re
.
-
Mo
to
r ro
ck
s,
but
w
o
n't
s
tar
t.
-
Lo
os
e m
o
to
r m
oun
t.
-
B
low
e
r w
h
eel
not
t
ight
on
m
o
to
r s
h
af
t.
-
B
a
d m
o
to
r/
c
ont
ro
l m
odul
e.
-
Chec
k
f
o
r l
oos
e m
o
to
r m
o
u
n
t.
-
M
a
k
e
s
u
re
blower
w
heel
is
t
ig
h
t on s
haf
t.
-
P
e
rf
or
m
m
o
to
r/
c
ont
ro
l r
epla
c
em
ent
c
hec
k
,
E
C
M
m
o
to
rs
o
n
ly
.
-
T
u
rn
pow
e
r O
F
F
pr
ior
t
o
r
epa
ir
.
W
a
it
5
m
in
u
tes
a
fter
di
s
c
onne
c
ti
ng power
bef
or
e
o
p
e
n
ing
m
o
to
r.
-
Handl
e el
ec
tr
on
ic
m
o
to
r/
c
ont
ro
l
w
it
h
c
a
re
.
- M
o
to
r
o
s
c
ill
at
es
up &
do
w
n
w
h
ile
be
in
g te
s
ted
o
ff
of
bl
ow
er
.
-
It
i
s
n
o
rm
a
l fo
r m
o
to
r to
os
c
ill
a
te w
it
h
no l
oad o
n
s
h
a
ft
.
----
--
--
--
--
-
V
a
ri
es
up a
nd down
o
r i
n
ter
m
itte
n
t.
-
V
a
ri
at
ion i
n
230 V
a
c
t
o
m
o
to
r.
-
Uns
eat
e
d
pin
s
i
n
w
ir
ing ha
rn
es
s
c
onn
ec
to
rs
.
-
E
rr
a
ti
c
CF
M
c
o
m
m
and f
rom
"
B
K
" ter
m
in
a
l.
-
I
m
p
rop
er
t
her
m
o
s
tat
c
onnec
ti
o
n
or
s
e
tt
ing.
-
M
o
is
tu
re
pr
es
ent
in
m
o
to
r/
c
ont
ro
l
m
odul
e.
-
Chec
k
l
ine v
o
lt
age f
o
r v
a
ri
a
tion
or
"s
ag"
.
-
Chec
k
l
o
w
v
o
lt
a
ge c
o
nnec
ti
on
s
(
G
, Y
, W
, R
, C
) a
t
m
o
to
r,
un
s
e
ate
d
p
in
s
i
n
m
o
to
r
har
nes
s
c
onn
ec
to
rs
.
-
Chec
k
-out
s
y
s
tem
c
ont
ro
ls
-
T
her
m
o
s
tat
.
- Pe
rf
o
rm
M
o
is
tu
re
C
h
e
c
k.
*
-
T
u
rn
pow
e
r O
F
F
pr
ior
t
o
r
epa
ir
.
-
"
H
unt
s
" or
"pu
ff
s
" at
hig
h
CF
M
(
s
p
eed)
.
- I
n
c
o
rre
ct
o
r d
irt
y
f
ilt
e
r(s
).
-
I
n
c
o
rr
e
c
t s
uppl
y
or
r
e
tu
rn
duc
tw
or
k
.
-
I
n
c
o
rr
e
c
t b
low
e
r s
pee
d s
e
tt
ing.
-
Does
r
e
m
o
v
ing p
anel
or
f
ilt
er
r
educ
e "
puf
fi
n
g
"?
-
Chec
k
/r
epl
ac
e
f
ilt
er
.
-
Chec
k
/c
o
rr
ec
t duc
t r
e
s
tr
ic
ti
ons
.
-
A
d
ju
s
t to c
o
rr
e
c
t b
low
e
r s
p
ee
d
s
e
tti
ng
.
-
T
u
rn
pow
e
r O
F
F
pr
ior
t
o
r
epa
ir
.
Troub
le
sho
o
ting
C
h
art f
o
r ECM Variable
Sp
e
e
d A
ir Circulato
r
B
low
er Mo
tors
- M
o
to
r w
o
n
't
s
ta
rt.
-
M
o
to
r s
ta
rts
,
bu
t r
u
n
s
er
ra
ti
c
a
lly
.
