Carrier AquaForce 30XV140 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 107

ALARM
ALARM NAME
CODE
10091 Evaporator Flow Tested when the unit is ON:
Switch Failure The alarm will trip if the evaporator
flow switch fails to close within the
Off to On Delay (m_delay = Yes) OR
if the evaporator flow switch is
opened during normal operation
Tested when the unit is OFF:
The alarm will trip if the evaporator
pump control (cpump_seq > 0) and
evaporator_ pump_loc (PUMP-
CONF tables ) are enabled and the
evaporator flow switch is closed after
the evaporator pump command is
OFF for more than 2 minutes OR
if the evaporator flow switch fails to
close within the Off to On Delay
10097 Water Exchanger Tested only when the unit is running.
Temperature Sen- The alarm will trip if the leaving water
sors Swap temperature is higher than the enter-
ing water temperature for more than
1 minute.
10101 Circ A - High satu- The alarm is tripped when saturated
rated temperature out suction temperature exceeds a cer-
of map compressor tain value for an extended period of
time per the following logic:
10102 Circ B - High satu-
A timer tallies the elapsed minutes
rated temperature out
that saturated suction temperature is
of map compressor
higher than MOP (55 F=12.77 C).
If SST is higher than MOP + 9°F,
then the timer is increased by 2 x the
elapsed minutes.
When saturated suction temperature
is lower than MOP or the circuit is
OFF, the timer is decreased by the
elapsed minutes.
The alarm is tripped when the timer
reached a value higher than 90 minutes.
1101 Compressor A Motor Tested when the compressor is ON
temperature too high or OFF.
The alarm is set if compressor motor
temperature CP_TMP_A or
CP_TMP_B > 275 F (135 C).
1103 Compressor A High Tested when the compressor is ON
Pressure Switch pro- or OFF. The alarm is set when the
tection Safe Stop DI-37 of the compressor
drive is opened (terminal 37 on the
compressor VFD).
12001 Circuit A Discharge Tested when the unit is On or Off
Transducer Alarm will trip if the pressure trans-
ducer reads below –7 psi (–48 kPa)
12002 Circuit B Discharge
Transducer
12004 Circuit A Suction Tested when compressor is Off
Transducer Alarm will trip if the pressure trans-
ducer reading is below –7 psi (–48
12005 Circuit B Suction
kPa) or SST-EWT > 0 and unit is in
Transducer
cooling mode and EXV open-
ing<40% for 60 seconds
12010 Circuit A Oil Pres- Tested when the unit is On or Off
sure Transducer Alarm will trip if pressure transducer
reading is below –7 psi (–48 kPa)
12011 Circuit B Oil Pres-
sure Transducer
12013 Circuit A Economizer Tested when the unit is On or Off
Pressure Transducer Alarm will trip if pressure transducer
reading is below –7 psi (–48 kPa)
12014 Circuit B Economizer
Pressure Transducer
12031 Circuit A Condenser Tested when the unit is On or Off
Subcooling Liquid Alarm will trip if pressure transducer
Pressure Transducer reading is below –7 psi (-48 kPa)
12032 Circuit B Condenser
Subcooling Liquid
Pressure Transducer
CCN — Carrier Comfort Network®
EMM — Energy Management Module
EWT — Entering Water Temperature
EXV — Electronic Expansion Valve
LEN — Local Equipment Network
LWT — Leaving Water Temperature
Table 73 — Alarm Details by Code (cont)
CRITERIA ACTION TAKEN
FOR TRIP BY CONTROL
The unit and evapo-
rator pump will be
stopped immedi-
ately.
The unit will be
stopped
Circuit A will be shut
down
Circuit B will be shut
down
Circuit A will be shut
down
Circuit A will be shut
down
Circuit will be shut
down immediately
Circuit will be shut
down immediately
Circuit will be shut
down immediately
Circuit will be shut
down immediately
Circuit will be shut
down immediately
LEGEND
MOP — Maximum Operating Pressure
OAT — Outdoor Air Temperature
SIOB — Standard Input Output Board
SST — Saturated Suction Temperature
VFD — Variable Frequency Drive
RESET
METHOD
Automatic, first occurance
in 24 hours OR
Manual, if the alarm has
occurred in the previous
24 hours
Manual
Manual
Manual
Manual
Manual
Automatic, if transducer
reading returns to normal.
Affected circuit will be
restarted normally.
Automatic, if transducer
reading returns to normal
OR
Manual, if the alarm has
occurred 3 times within th
elast 24 hours.
Automatic, if transducer
reading returns to normal.
Affected circuit will be
restarted normally.
Automatic, if transducer
reading returns to normal.
Affected circuit will be
restarted normally.
Automatic, if transducer
reading returns to normal.
Affected circuit will be
restarted normally.
107
POSSIBLE CAUSES/CORRECTIVE
ACTIONS
If this condition is encountered, check the fol-
lowing items for faults:
- a faulty flow switch
- flow switch wiring
- SIOB board for a faulty channel
If this condition is encountered, check the fol-
lowing items for faults:
- check LWT and EWT wiring at SIOB board
- check for faulty entering or leaving water
temperature sensors
- check evaporator nozzles for proper water
temperature sensor locations
If this condition is encountered, check the fol-
lowing items for faults:
- wiring of suction temperature thermistor
- accuracy of thermistor
If this condition is encountered, check the fol-
lowing items for faults:
- faulty wiring and loose plugs
- faulty SIOB board
- faulty compressor temperature thermistor
If this condition is encountered, check the fol-
lowing items for faults:
- condenser fans and motors for proper rota-
tion and operation
- compressor operating beyond the limits of
the operating envelope
- faulty high pressure switch or wiring (termi-
nals 12 and 37 in VFD)
- plugged/fouled condenser coil
- excessive charge
If this condition is encountered, check the fol-
lowing items for faults:
- sensor wiring to the SIOB board
- faulty channel on the board
- Sensor accuracy
See the Transducer section on page 49 for
sensor description and connections