Carrier HS070-160 Troubleshooting Manual page 7

STATUS
KEYBOARD ENTI DISPLAY
X ALARMS
ALARM X
ALARM X
ALARM X
M O D E
MODE X
STAG ES
X STAGE
SET POlNT
If unit is in dual set point mode the set point currently in effect
is displayed.
TEMPS
L W T X
EWT X
SSTA X
CGTA X
S H A X
SSTB X
CGTB X
S H B X
RST X
PRESS
LCSA X
LCSB X
A N A L O G
EXVA X
EXVB X
Table 6 - Keyboard Directory
C O M M E N T
Current alarm displays
Alarm 1
Alarm 2
Alarm 3
Current operating
mode displays
Mode 1
Capacity stages
Stage number
Current operating
set point
Leaving chilled water
set point
Leaving water
temperature
System temperatures
Cooler leaving water
temp
Cooler entering water
temp
Saturated suction temp
circuit A
Compressor suction
gas temperature
circuit A
Superheat temp
circuit A
Saturated suction temp
circuit B
Compressor suction
gas temperature
circuit B
Superheat temp
circuit B
Reset temperature
Systems pressures
Circuit A loss of charge
switch
Circuit A oil pressure
switch
Circuit B loss of charge
switch
Circuit B oil pressure
switch
System analog values
Circuit A EXV valve
position
Circuit B EXV valve
position
7
QUICK TEST
DISPLAY
KEYBOARD ENTRY
INPUTS
L W T X
q 4
EWT X
El +
SSTA X
CGTA X
SSTB X
CGTB X
RST X
LCSA X
LCSB X
OUTPUTS
SLDA X
SLDB X
U N L B X
EXVAO X
EXVAC X
EXVBO X
EXVBC X
COMP
C A 1 X
CA2 X
CB2 X
During test of compressors, each compressor will start and
run for 10 seconds. Compressor servicevalves and the liquid
line valve must be open. Energize compressor crankcase
heaters for 24 hours prior to performing compressor tests.
END TEST
C O M M E N T
Factory/field test of
inputs
Leaving water
temperature
Entering water
temperature
Saturated suction temp
circuit A
Compressor suction
gas temp circuit A
Saturated suction temp
circuit B
Compressor suction
gas temp circuit B
Reset temperature
Loss of charge switch
circuit A
Loss of charge switch
circuit B
Oil pressure switch
circuit A
Oil pressure switch
Circuit B
Factory/field test of
outputs
Circuit A liquid line
solenoid test
Circuit B liquid line
solenoid test
Unloader A test
Unloader B test
Circuit AEXVclosetest
Circuit B EXV open test
Circuit B EXV close test
Factory/field test of
compressors
Circuit A compressor 1
test
Circuit A compressor 2
test
Circuit B compressor 1
test
test
Leave quick test