Chamberlain Merlin Whisper Drive MT3850EVO, Installation And Operating Instructions Manual, Page: 26 / 32

24
D
IA
G
N
O
ST
IC
U
P
D
O
W
N
SY
M
PT
O
M
PO
SS
IB
LE
C
AU
SE
PO
SS
IB
LE
R
ES
O
LU
TO
N
C
O
D
E
AR
R
O
W
AR
R
O
W
1-
1
1
FL
AS
H
1
FL
AS
H
Th
e
ga
ra
ge
do
or
op
en
er
w
ill
Th
e
P
ro
te
ct
or
S
ys
te
m
is
no
t
C
he
ck
th
e
P
ro
te
ct
or
S
ys
te
m
is
no
tc
lo
se
an
d
th
e
lig
ht
s
w
ill
fla
sh
in
st
al
le
d,
co
nn
ec
te
d,
or
in
st
al
le
d
an
d
al
ig
ne
d
co
rr
ec
tly
,
w
ire
s
m
ay
be
cu
t
bo
th
LE
D
s
ar
e
O
N
w
ith
no
ob
st
ru
ct
io
n
be
tw
ee
n
th
e
be
am
s.
1-
2
1
FL
AS
H
2
FL
AS
H
ES
Th
e
ga
ra
ge
do
or
op
en
er
w
ill
Th
e
P
ro
te
ct
or
S
ys
te
m
w
ire
C
he
ck
th
e
P
ro
te
ct
or
S
ys
te
m
is
no
tc
lo
se
an
d
th
e
lig
ht
s
w
ill
sh
or
te
d
or
re
ve
rs
ed
in
st
al
le
d
an
d
al
ig
ne
d
co
rr
ec
tly
,
fla
sh
bo
th
LE
D
s
ar
e
O
N
w
ith
no
ob
st
ru
ct
io
n
be
tw
ee
n
th
e
be
am
s.
1-
3
1
FL
AS
H
3
FL
AS
H
ES
W
al
lm
ou
nt
ed
do
or
co
nt
ro
l
Th
e
w
ire
s
fo
rt
he
do
or
co
nt
ro
l
C
he
ck
th
e
do
or
co
nt
ro
lw
iri
ng
is
w
ill
no
tf
un
ct
io
n
ar
e
sh
or
te
d
or
th
e
do
or
co
rr
ec
t
co
nt
ro
li
s
fa
ul
ty
1-
4
1
FL
AS
H
4
FL
AS
H
ES
Th
e
ga
ra
ge
do
or
op
en
er
w
ill
M
is
al
ig
ne
d
or
ob
st
ru
ct
ed
C
he
ck
th
e
P
ro
te
ct
or
S
ys
te
m
is
no
tc
lo
se
th
e
do
or
an
d
th
e
P
ro
te
ct
or
S
ys
te
m
in
st
al
le
d
an
d
al
ig
ne
d
co
rr
ec
tly
,
lig
ht
s
fla
sh
bo
th
LE
D
s
ar
e
O
N
w
ith
no
ob
st
ru
ct
io
n
be
tw
ee
n
th
e
be
am
s.
1-
5
1
FL
AS
H
5
FL
AS
H
ES
Th
e
ga
ra
ge
do
or
op
en
er
cl
ic
ks
In
te
rn
al
fa
ul
t
C
on
ta
ct
se
rv
ic
e
ce
nt
re
bu
tn
o
m
ov
em
en
t
Th
e
op
en
er
ru
ns
ap
pr
ox
im
at
el
y
C
om
m
un
ic
at
io
n
er
ro
rt
o
C
on
ta
ct
se
rv
ic
e
ce
nt
re
15
0-
20
0
m
m
an
d
st
op
s
an
d/
or
re
ve
rs
es
tra
ve
lm
od
ul
e
Yo
ur
ga
ra
ge
do
or
op
en
er
is
pr
og
ra
m
m
ed
fo
rs
el
f-d
ia
gn
os
tic
ca
pa
bi
lit
ie
s.
Th
e
U
P
an
d
D
O
W
N
ar
ro
w
s
on
th
e
ga
ra
ge
do
or
op
en
er
fla
sh
th
e
di
ag
no
st
ic
co
de
s.
D
IA
G
N
O
ST
IC
C
H
A
R
T
T
M
T
M
T
M
T
M
T
M
T
M