48
Table 32
Alarm and Alert Codes (cont)
ALARM/ALERT
CODE
ALARM OR
ALERT
DESCRIPTION
WHY WAS THIS
ALARM GENERATED?
ACTION TAKEN BY
CONTROL
RESET
METHOD
PROBABLE CAUSE
T182
Alert
Compressor Protec-
tion Module 1 Inter-
nal Diagnostic
The
ComfortLink™ Compres-
sor Protection Module has
generated an internal diag-
nostic alert.
Affected compressors
are shut down.
Manual on
CCP and
MBB
Eliminate EMI sources around
the module, consider replace-
ment of the CCP module if
alerts continue.
T183
Alert
Compressor Protec-
tion Module 2 Inter-
nal Diagnostic
The
ComfortLink Compres-
sor Protection Module has
generated an internal diag-
nostic alert.
Affected compressors
are shut down.
Manual on
CCP and
MBB
Eliminate EMI sources around
the module, consider replace-
ment of the CCP module if
alerts continue.
T184
Alarm
Compressor Protec-
tion Module 1
CCP has experienced too
many power cycles***
Chiller shut down
Manual
Loose connections, frequent
power interruptions.
T185
Alarm
Compressor Protec-
tion Module 2
CCP has experienced too
many power cycles***
Chiller shut down
Manual
Loose connections, frequent
power interruptions.
A200
Alarm
Cooler Pump Inter-
lock Failed at
Start-Up
Interlock did not close within
5 minutes after chiller was
enabled
Chiller shut down.
Pump turned off.
Manual
Failure of cooler pump, cooler
pump interlock, or flow switch
A201
Alarm`
Cooler Pump Inter-
lock Opened
Unexpectedly
Interlock opened for at least
10 seconds during operation
and does not close within
5 min.
Chiller shut down.
Pump turned off.
Manual
Failure of cooler pump, cooler
pump interlock, or flow switch
A202
Alarm
Cooler Pump Inter-
lock Closed When
Pump OFF
Interlock closed when pump
relay is off
Cooler pump remains
off. Unit prevented from
starting.
Manual
Failure of cooler pump relay or
interlock, welded contacts.
Cooler pump enabled but mot
controlling pump
T203
Alert
Loss of Communica-
tion with the Slave
Chiller
The master chiller (when con-
figured) has lost communica-
tion with the slave chiller for
3 minutes.
Master chiller runs as a
stand-alone chiller.
Automatic Failed Slave MBB Module, wir-
ing error, loose connections,
wrong address, loss of control
power on slave chiller.
T204
Alert
Loss of Communica-
tion with the Master
Chiller
The slave chiller (when con-
figured) has lost communica-
tion with the master chiller for
3 minutes.
Slave chiller runs as a
stand-alone chiller.
Automatic Failed Master MBB Module,
wiring error, loose connec-
tions, wrong address, loss of
control power on master chiller.
T205
Alert
Master and Slave
Chiller with Same
Address
The master chiller (when con-
figured) has determined that
its address is the same as the
slave address.
Dual chiller control dis-
abled.
Automatic Master and Slave chiller must
have different addresses.
T206
Alert
High Leaving Chilled
Water Temperature
LCW read > LCW Delta Alarm
limit and total capacity is
100% and current LCW >
LCW reading 1 minute ago
None.
Automatic Building load greater than unit
capacity, low water/brine flow,
or compressor fault. Check for
other alarms or alerts.
A207
Alarm
Cooler Freeze Protec-
tion
Cooler EWT or LWT less than
freeze point. Freeze point is
the brine freeze se2 F
(1.1 C).
Chiller shut down.
Leave Cooler pump on.
Turn Cooler pump on if
Chiller is off.
Automatic† Faulty thermistor, low water
flow
T210
Alert
Winterization
Required
SCT<32 F in either circuit
None
Manual
Winterization must be per-
formed to avoid cooler freeze-
up. After winterization has been
completed, configure W.DNE
Winterization Performed (Con-
figuration Mode, Sub-mode
SERV) to YES to reset alert.
T950
Alert
Loss of Communica-
tion with WSM
No communications have
been received by the MBB
within 5 minutes of
transmission.
WSM forces removed.
Runs under own
control.
Automatic Failed module, wiring error,
failed transformer, loose con-
nection plug, wrong address
A951
Alarm
Loss of Communica-
tion with Chillervisor
System Manager
(CSM)
No communications have
been received by the MBB
within 5 minutes of last
transmission.
CSM forces removed.
Runs under own
control.
Automatic Wiring faulty or module failure
T998
Alert
Loss of Refrigerant
Flow in Circuit A.
Between 40 and 90 seconds
of runtime, SST is less than
0° F (–18 C) and the rate of
change is negative (in 5 sec-
ond increments).
Circuit A compressor is
shut down.
Manual
Refrigerant restriction such as
closed suction service valve,
closed liquid line service valve,
faulty liquid line solenoid valve,
faulty EXV/Economizer opera-
tion, plugged refrigerant
strainer, closed discharge line
valve.
T999
Alert
Loss of Refrigerant
Flow in Circuit B.
Between 40 and 90 seconds
of runtime, if SST is less than
0° F (–18 C) and the rate of
change is negative (in 5 sec-
ond increments).
Circuit B compressor is
shut down.
Manual
Refrigerant restriction such as
closed suction service valve,
closed liquid line service valve,
faulty liquid line solenoid valve,
faulty EXV/Economizer opera-
tion, plugged refrigerant
strainer, closed discharge line
valve.
