Carrier AQUASNAP 30RAP010-150 Controls, Start-Up, Operation, Service, And Troubleshooting page 77

ALARM/ ALARM
ALERT OR DESCRIPTION
CODE ALERT
Cooler Pump 1 Aux
A198 Alarm Contacts Closed While
Pump Off
Cooler Pump 2 Aux
A199 Alert Contacts Closed While
Pump Off
Pre- Cooler Flow/Interlock
P200
Alert/ Contacts Failed to Close
/A200
Alarm at Start-Up
Cooler Flow/Interlock
Pre-
P201 Contacts Opened
Alert/
/A201 During Normal
Alarm
Operation
Cooler Pump Interlock
A202 Alarm Closed When Pump is
Off
Loss of Communication
T203 Alert
with Slave Chiller
Loss of Communication
T204 Alert
with Master Chiller
Master and Slave Chiller
T205 Alert
with Same Address
High Leaving Chilled
T206 Alert
Water Temperature
Cooler Freeze
A207 Alarm
Protection
EWT or LWT
A208 Alarm
Thermistor failure
Cooler Pump 1
T300 Alert Scheduled
Maintenance Due
Cooler Pump 2
T301 Alert Scheduled
Maintenance Due
Strainer Blowdown
T302 Alert Scheduled
Maintenance Due
Condenser Coil
T303 Alert
Maintenance Due
See Legend on page 78.
Table 36 — Alarm and Alert Codes (cont)
WHY WAS THIS
ALARM
GENERATED?
Pump 1 Auxiliary Contacts
closed for 26 seconds
when pump state is off
Pump 2 Auxiliary Contacts
closed for 26 seconds
when pump state is off
Cooler flow switch contacts
failed to close within
1 minute (if cooler pump
control is enabled) or
within 5 minutes (if cooler
pump control is not
enabled) after start-up
Flow switch opens for at
least 3 seconds after
being initially closed
If configured for cooler
pump control and flow
switch input is closed for
5 minutes while pump
output(s) are off
Master chiller MBB
loses communication
with slave chiller MBB
Slave chiller MBB loses
communication with
master chiller MBB
Master and slave chiller
have the same CCN
address (CCN.A)
LWT is greater than control
point and LCW Alert Limit,
and capacity is at 100% for
one minute.
Cooler EWT or LWT is less
than Brine Freeze (BR.FZ)
Cooler EWT is less than
LWT by 3° F (1.7° C) for
1 minute after a circuit is
started
Pump 1 Service
Countdown (P.1.DN)
expired. Complete pump 1
maintenance and enter
'YES' for Pump 1
Maintenance Done
(P.1.MN) item.
Pump 2 Service
Countdown (P.2.DN)
expired. Complete pump 2
maintenance and
enter 'YES' for Pump 1
Maintenance Done
(P.2.MN) item.
Strainer Service
Countdown (S.T.DN)
expired. Complete strainer
blowdown and enter 'YES'
for Strainer Maintenance
Done (S.T.MN) item.
Coil Service Countdown
(C.L.DN) expired.
Complete condenser coil
cleaning and enter 'YES'
for Coil Maintenance Done
(C.L.MN) item.
77
ACTION TAKEN
BY CONTROL METHOD
Chiller not allowed to Manual when
start aux contacts open
Chiller not allowed to Manual when
start aux contacts open
Chiller not allowed to
start. For models with
dual pumps, the
second pump will be
started if available
All compressors shut
down. For models with
Automatic (P201) or
dual pumps, the
Manual (A201)
second pump will be
started if available
Automatic when
Chiller shut down
aux contacts open
Dual chiller control
disabled. Chiller runs
Automatic
as a stand-alone
machine.
Dual chiller control
disabled. Chiller runs
Automatic
as a stand-alone
machine
Dual chiller routine
disabled. Master/slave
Automatic
run as stand-alone
chillers.
Alert only. No action
Automatic
taken.
Both EWT and LWT
Chiller shutdown. must be at least 6 F
Cooler pump continues (3.3 C) above Brine
to run a minimum of Freeze point (BR.FZ).
5 minutes (if control Automatic for first,
enabled). Manual reset thereaf-
ter.
Chiller shutdown.
Cooler pump shut off
(if control enabled).
None Automatic
None Automatic
None Automatic
None Automatic
RESET PROBABLE
CAUSE
Wiring error, faulty
pump contactor
(welded contacts),
pump in hand position
Wiring error, faulty
pump contactor
(welded contacts),
pump in hand position
Wiring error, pump
circuit breaker
Manual tripped, contactor
failure, faulty flow
switch or interlock
Cooler pump failure,
faulty flow switch or
interlock, pump
circuit breaker
tripped
Wiring error, faulty
pump contactor
(welded contacts)
Wiring error, faulty
wiring, failed Slave
chiller MBB module,
power loss at slave
chiller, wrong slave
address.
Wiring error, faulty
wiring, failed master
chiller MBB module,
power loss at Master
chiller.
CCN Address for
both chillers is the
same. Must be
different. Check
CCN.A under the
OPT2 sub-mode in
Configuration at both
chillers.
Building load greater
than unit capacity,
or compressor fault.
Check for other
alarms/alerts.
Faulty thermistor,
low water flow, faulty
cooler water.
Faulty cooler pump,
low water flow,
Manual
plugged fluid strainer,
faulty thermistor.
Routine pump
maintenance
required
Routine pump
maintenance
required
Routine strainer
maintenance
required
Routine condenser
coil maintenance
required