Carrier SUPRA 750Mt - SECTION 3 OPERATION; 3.1 PRE-TRIP INSPECTION

2
-
2
2
6
2
-
-
6
1
1
X
X
-
-
2
0
(
0
3
/
0
4
)
AL0: Low Oil Pressure Alarm
The
lo
w
oi
l
pr
es
su
re
al
ar
m
is
di
sp
la
ye
d
wi
th th
e
de
s-
cription ENG OIL or AL0. This alarm is generated if the
control senses low oil pressure under the proper condi-
tions. The fault light (FL) is turned on. Engine will shut
down.
AL1: High Coolant Temperature Alarm
The
hig
h
coo
lan
t
temp
era
ture
ala
rm
is
dis
pla
yed
with
the
des
crip
tio
n
ENG H
OT or
AL1
. Thi
s
ala
rm is
gen
era
-
ted
if
the
con
trol
sen
ses
a
hig
h
coo
lan
t
temp
era
ture
.
The
fau
lt
li
gh
t
(FL
)
is
tur
ne
d
on
an
d
theeng
in
e
wi
ll
sh
utdown
.
See Section 2.2.1.
AL2: High Pressure Alarm
The high pressure alarm is displayed with the des-
cri
pti
on
HI
PR
ESS
or
AL
2.
Thi
s
al
arm
is
ge
ne
ra
ted
if
the
hi
ghpres
su
re
sw
itc
h
op
en
s.
Thefaul
t
li
gh
t
(FL
)
is
tur
ne
d
on and the engine will shut down. See Section 2.4c.
AL3: Start Failure Alarm
The start failure alarm is displayed with the descrip-
tion STARTFAIL or AL3. This alarm is generated if the
engine fails to start. The fault light (FL) is turned on.
If function MAN OP
(manua
l start
mode) is selected
the
sta
rt
fai
lu
re
al
armwill
be
ge
ne
rat
ed
if
the
en
gi
ne
fai
ls
to start in 5 minutes.
AL4: Low Battery Voltage Alarm
The low battery voltage alarm is displayed with the
des
cri
ptio
n
LOW BA
TT or
AL4
. This
ala
rm is
gen
era
ted
if the battery voltage falls below 10 vdc. The fault light
(FL) is turned on.
AL5: High Battery Voltage Alarm
The high battery voltage alarm is
displ
ayed with the
description HI BATT or AL5. This alarm is generated if
the battery voltage is above 17 vdc. The fault light (FL)
is turned on and the engine will shut down.
AL6: Defrost Override Alarm
The defrost override alarm is displayed with the des-
cription DEFR FAIL or AL6. If after 45 minutes of defrost,
the unit is still in defrost mode, the unit displays AL6 and
switches to defrost overide mode. The fault light (FL) is
turned on.
AL7: Alternator Auxiliary Alarm
The alternator auxiliary alarm is displayed with the
description ALT AUX or AL7. This alarm is generated if
the altern
ator auxil
iar
y
sig
nal is
not
pre
sen
t
with the
eng
ine runn
ing
.
(See Secti
on 2.8.12
).
The fault light
(FL) is turned on.
AL8: Starter Motor Alarm
The
star
ter
moto
r
ala
rm
is
dis
pla
yedwith
thedescri
p-
tion STARTER or AL8. This alarm is generated if the
sta
rte
r
mo
torinpu
t
si
gn
al
is
no
t
pre
se
nt
wi
th
sta
rte
r
so
le
-
noid energized. The fault light (FL) is turned on.
AL9: Compart
ment 1
Retur
n
Air Sensor Alarm
The Compartment 1 return air sensor alarm is dis-
playe
d with
the descriptio
n 1RA SENSOR
or AL9. This
alarm is generated if the return air sensor is open or
shorted. The fault light (FL) is turned on because there
is no controlling probe.
AL10: Com
partm
ent 2 Return
Air Sensor Ala
rm
The Compartment 2 return air sensor alarm is dis-
pl
ay
ed
wi
th
the
de
sc
ri
pti
on
2R
A
SEN
SOR
or
AL
10
.
Thi
s
alarm is generated if the return air sensor is open or
shorted. The fault light (FL) is turned on because there
is no controlling probe.
AL11: Coolant Temperature Sensor Alarm
The coolant temperature sensor alarm is displayed
with the description WT SENSOR or AL11. This alarm
is generated if the coolant temperature sensor is open
or shorted.
AL12: Compressor Discharge Temperature Alarm
The
com
pre
sso
r
dis
cha
rge
temp
erat
ure
ala
rm
is
dis
-
played with the description HIGH CDT or AL12. This
alarm is generated if the temperature is sensed above
154
_
C (310
_
F) for three minutes. If the discharge tem-
perature exceeds 177
_
C (350
_
 F), the three minute
timer is overridd
en and the unit
shut down
immedi
ately
.
The fault light (FL) is turned on.
AL13: Compressor Discharge Temperature
Sensor Alarm
The
com
pre
sso
r
dis
cha
rge
temp
erat
ure
sen
sor
alarm is displayed with the description CD SENSOR or
AL13. This
alarm is
genera
ted
if
the
senso
r
is
open or
shorted.
AL14: Standby Motor Overload Alarm
The standby motor overload alarm is displayed with
the description SBY MOTOR or AL14. This alarm is
gene
rated whe
n the MOL input i
s sensed
open wi
th
the
Run Relay energized in electric mode (Diesel/Electric
Relay energized).
AL15: Fuse Alarm
The fuse
ala
rm
is
dis
pla
yed with
the descri
pti
on
FUSE BAD or AL15. This alarm is generated when the
FUSE input is sensed low. The fault light (FL) is turned
on.