Carrier SUPRA 850Mt - Table 4-3 Microprocessor Configuration

4
-
1
9
6
2
-
-
6
1
1
X
X
-
-
2
0
(
0
3
/
0
4
)
4.1
9.2
Mic
ropr
oces
sor
conf
igur
ati
on
When replacing a microprocessor it is important to
ch
ec
k
tha
t
th
e
co
nfi
gu
ra
tio
ns
are
co
mp
ati
bl
e
for
the
un
it
into which it will be
install
ed. (This same board
fits both
trailer and truck model units.) All configuration fields
should be viewed before starting the unit.
To reach the configuration fields :
1.
Turn the Ru
n/Stop switc
h to the Stop positio
n.
2.
With the unit off, locate the serial po
rt plug located
bel
ow
the
con
trol
pan
el. Re
mov
e
the pr
otec
tive
plu
g
to
ga
in
ac
ce
ss
to
the
wi
re
ter
mi
na
ls
.
Pl
ac
e
an
insulated jumper wire between wires SPA and SPB
at the serial port plug.
CAUTION
Do not allow jumper wire to touch any
ground.
3.
Tu
rn the Run/Sto
p switch to the Run
pos
itio
n. The
FAULT light will come on, and the micro display will
read “CNF1 TV” or “CNF1 DI”. Remove the jumper
wire from the serial port and reinstall the protective
plu
g.
The
con
figu
rati
on
scre
en
wil
l
now
rem
ain
av
ai
la
bl
e
fo
r
5
m
in
ut
es
.
Sc
ro
ll
th
ro
ug
h
th
e
con
figu
rati
on
lis
t
usi
ng
the
FUNC
TION
key
and
compar
e the
settings with those shown on t
he table
in the next column. If any of the configurations need
to be changed continue with step (4) below.
4.
T
o change the configu
ration selec
tion :
a.
 Brin
g
the
co
nfi
gu
rat
io
n
to
be
ch
an
ge
d
on
to
the
di
sp
la
y
.
Pre
ss
th
e
EN
TER
ke
y
to
al
lo
w
ch
an
ge
access to the displayed configuration.
b.
 Pr
es
s
ei
th
er
th
e
UP
or
DO
WN
ke
ys
to
di
sp
la
y
availa
ble
selec
tions
for
that
config
uration
.
Leave
the
co
rre
ct
se
le
cti
on
on
the
scr
ee
n.
The
se
le
cti
on
di
sp
la
y
wi
ll
fla
sh
wa
rni
ng
the
op
era
tor
tha
t
the
dis
pla
yed value
has not
bee
n
ent
ered
.
Pres
s
the
ENTER key to enter the
new selec
tion into
memory
.
(The display will revert to the original selection if no
further action is taken for the next 5 seconds.)
c.
Continue to scroll through the configuration list by
pres
sin
g
the
FUNC
TION
key
.
Cha
nge
any
oth
er
configurations as required.
d.
When finish
ed turn the Run/Stop switch to the Stop
position, then back to the Run position to start the
unit.
Hour Meter
Th
e
ho
ur
me
te
r
ca
n
be
se
t
to
an
y
va
lu
e
vi
a
th
e
se
ri
al
po
rt
,
if
th
e
me
te
r
ha
s
le
ss
th
en
5
ho
ur
s
on
it
.
Th
is
al
lo
ws
a replacement microprocessor to be set to the same
hours as the microprocessor it is replacing.
The microprocessor has 2 programmable registers
which are set via the serial port. These registers are
co
mp
ar
ed
to
on
e
of
the
ho
ur
me
ter
s
(d
ie
se
l,
sta
nd
by
,
or
switch on). If
the hour meter is
greater than the register
then the proper alarm is set.
Table 4-3 Microprocessor Configuration
C
o
n
f
i
g
u
r
a
t
i
o
n
D
e
s
c
r
i
p
t
i
o
n
T
V
A
l
l
T
V
E
n
g
i
n
e
G
l
o
w
T
i
m
e
CNF1
D
I
D
I
E
n
g
i
n
e
G
l
o
w
T
i
m
e
O
F
F
8
5
0
C
D
T
n
o
t
u
s
e
d
CNF2
O
N
7
5
0
/
9
5
0
C
D
T
u
s
e
d
O
F
F
A
l
l
3
0
_
C (86
_
F) Setpoint
CNF3
O
N
3
2
_
C (90
_
F) Setpoint
O
F
F
A
l
l
Heat
lockout
on
-
-12
_
C
( +10
_
F)
CNF4
ON
Heat
lockout
off
(Truck units)
OFF
MOP
Control
Disabled
(unloader)
CNF5
O
N
A
l
l
MOP
Control
Enabled
(unloader)
O
F
F
T
r
a
i
l
e
r
u
n
i
t
CNF6
O
N
A
l
l
T
r
u
c
k
u
n
i
t
O
F
F
A
l
l
High
speed
start
(Truck unit)
CNF7
ON
Low
speed
start
(Trailer unit)
O
F
F
B
e
l
t
d
r
i
v
e
n
f
a
n
s
O
N
A
l
l
E
l
e
c
t
r
i
c
f
a
n
m
o
t
o
r
s
O
F
F
A
l
l
O
u
t
-
o
f
-
r
a
n
g
e
a
l
a
r
m
CNF9
ON
Out-of-range
alarm
and
unit shut down
O
F
F
A
l
l
F
u
n
c
t
i
o
n
s
n
o
r
m
a
l
CNF11
O
N
F
u
n
c
t
i
o
n
s
l
o
c
k
e
d
O
F
F
C
o
o
l
/
H
e
a
t
/
D
e
f
r
o
s
t
O
N
A
l
l
H
e
a
t
O
n
l
y
O
F
F
A
l
l
N
o
t
a
c
t
i
v
e
CNF14
ON
Reversible
Multitemp
active
O
F
F
A
l
l
N
o
t
A
c
t
i
v
e
CNF15
O
N
U
l
t
r
a
F
r
e
s
h
2
a
c
t
i
v
e
O
F
F
A
l
t
a
u
x
a
l
a
r
m
o
n
l
y
CNF16
O
N
A
l
l
Alt
aux
alarm
shut
unit
down