Carrier AquaForce B Series Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 213

ALARM
ALARM NAME
CODE
10001 Evaporator There are several criteria for this alarm.
Freeze Protection 1. Tested whether the unit is ON or
OFF and all of the following condi-
tions have been met:
a. One of these conditions is true:
b. All of these conditions are true:
2. The unit state is Delay, Off, or Stop-
ping and all of the following condi-
tions have been met:
a. Circuit A or Circuit B Saturated
b. One of these conditions is true:
3. If the evaporator heaters are com-
manded ON and the Cooler Heater
Current Sensing Relay does not
detect the appropriate current draw
indicating an Evaporator Heater has
failed.
Brine Freeze is 34°F (1.1°C) if Evapora-
tor Fluid Type [Main Menu
ration Menu
1 (Water). If Evaporator Fluid Type is 2
(Medium Brine) or (Low Brine), Brine
Freeze is a field configured under Brine
Freeze Setpoint [Main Menu
uration Menu
10005 Circuit A Low Suc- Tested only when the circuit is ON.
tion Temperature The alarm will trip if one of these con-
ditions is met:
10006 Circuit B Low Suc-
1. If the circuit is running and SST < –
tion Temperature
22°F (–30°C) for more than 10 sec-
onds
2. If SST < –13°F (–25°C) for
30 seconds
3. If SST < Brine Freeze Setpoint –
6°F for more than 10 minutes
4. If SST < Brine Freeze Setpoint –
6°F, if capacity is =20%(minimum
load), set a timer to 3 minutes, else
set it to 90 seconds. At the end of
timer, if capacity is at 20% (min_-
load), set the alarm.
10014 Customer Inter- Tested only if EMM option is configured.
lock Failure The alarm will trip if CCN variable
REM_LOCK is closed, and the unit is
running
10031 Unit is in emer- Tested when the unit is On and Off
gency stop The alarm will trip when the CCN com-
mand for an Emergency Stop is sent
across the network
10032 Evaporator pump Tested only when the unit is On
#1 fault If the evaporator flow switch is failed
after the Off to On Delay period
10033 Evaporator pump
(m_delay = Yes) while the pump is
#2 fault
commanded to be on then, the alarm
will be tripped.
Table 168 — Alarm Details by Code
CRITERIA
FOR TRIP
The unit is shut
down if it is running
or is not allowed to
start. The command
for the cooler pump
i. Entering Water Temperature is will remain ON.
less than the fluid freeze point
ii. Leaving Water Temperature is
less than the fluid freeze point
i. No communication alarms with
the SIOB
ii. The one (1) minute timer follow-
ing power up has elapsed.
Suction Temperature is less than
fluid freeze point
i. The evaporator heater has
been on for 10 minutes or more
ii. All of the following conditions
must be true:
1. Evaporator heater is not
installed or not configured
2. The evaporator flow switch is
open
3. Entering Water Temperature
is less than 46.4°F (8°C) or
Leaving Water Temperature
is less than 46.4°F (8°C).

Configu-

Service Parameters] is

Config-

Service Parameters]
Circuit A shuts down Automatic, first occurrence
Circuit B shuts down
Unit shuts down
Unit shuts down
The pump and the
unit will be stopped.
ACTION TAKEN RESET
BY CONTROL METHOD
Automatic for the first time
within a 24 hours or manual
if the alarm has occurred
more than once in the pre-
vious 24 hours, if the fol-
lowing conditions are met:
1. Entering Water Tem-
perature is greater than
the fluid freeze point
2. Leaving Water Tempera-
ture is 6°F (-14°C)
above the fluid set point
3. Circuit A Saturated Suc-
tion Temperature is
greater than fluid freeze
point
4. Circuit B Saturated Suc-
tion Temperature is
greater than fluid freeze
point
Manual reset is required if:
Leaving fluid temperature
is less than fluid set point +
6°F
in 24 hours OR
Manual, if the alarm has
occurred in the previous 24
hours
In order for the unit controls
to reset, the circuit's Satu-
rated Suction Temperature
must be greater than the
Brine Freeze Setpoint
minus 6°F (3.3°C).
Automatic, first occurrence
in 24 hours OR
Manual, if the alarm has
occurred in the previous 24
hours
Automatic after the CCN
variable EMSTOP returns
to normal. The unit will be
normally restarted.
Manual
213
POSSIBLE CAUSES/CORRECTIVE ACTIONS
If this condition is encountered, check the fol-
lowing items:
• Confirm solution and concentration and
compare the value with Brine Freeze Set-
point [Main MenuConfiguration Menu
Service Parameters]
• Check for a water flow issue, short circuit
or low water flow
• Check to be sure there is refrigerant in
each circuit
• Check the accuracy of the entering and
leaving water sensors
• Check the accuracy of the Suction Pres-
sure Transducer
• Check Evaporator heater operation
• Check Evaporator Heater Current Sensing
Relay. Confirm proper settings (see Ap-
pendix H) and operation.
• Check for a wiring issue for the Cooler
Heater, Cooler Heater Relay (CLR HTR),
and Cooler Heater Current Sensing Relay
(CLR HTR CSR)
If this condition is encountered, check the fol-
lowing items for faults:
• sensor wiring to SIOB
• board for faulty channel
• faulty suction transducer
• evaporator water flow switch
• loop volume
• EXV operation / blocked
• liquid line refrigerant restriction, filter drier,
service valve, etc.
• refrigerant charge
• if the Leaving Water Set Point is above
40°F (4.4°C) and there is glycol in the
loop, consider using the Medium Tempera-
ture Brine option to utilize the brine freeze
setpoint instead of 34°F (1.1°C) for fresh

water (Main Menu Configuration

Menu Service Parameters
Evaporator Fluid Type and Line 3 Brine
Freeze Setpoint)
If this condition is encountered, check the fol-
lowing items for faults:
• remote lockout switch is closed
(Connection EMM-J4-CH10)
If this condition is encountered, check the fol-
lowing items for faults:
• CCN Emergency Stop command
If this condition is encountered, check the fol-
lowing items for faults:
• interlock wiring circuit (SIOB-B J3)
• control signal to pump controller (SIOB-A
J2)
• evaporator pump contactor for proper op-
eration
• control voltage for proper voltage
• open chilled water flow switch (SIOB-A J3)

Line 1