Specifications

84
Table 51 — Master/Slave Alarm Code
LEGEND
Table 52 — Illegal Configuration Alarm Code
Alarm 99 — Unit is in Emergency Stop (P.31)
Criteria for Trip — The criterion is tested whether the units are
ON or OFF and when the machine receives a Carrier Comfort
Network
®
(CCN) command for an Emergency Stop.
Action to be Taken — Unit will stop, or will not allowed to
start.
Reset Method — Automatic, once a return to normal command
is received.
Possible Causes — If this condition is encountered, check for
CCN Emergency Stop command.
Cooler Pump Fault
Alarm 100 — Pump 1 Fault (P.32)
Alarm 101 — Pump 2 Fault (P.33)
Criteria for Trip — The criterion is tested whether the units are
ON or OFF. This alarm will be generated if the cooler pump
interlock opens. When starting the pump, the control must
read an open circuit for 3 consecutive reads. If the pump is
operating and the circuit opens, the alarm will be generated
immediately. The alarm will also be generated if the unit is
configured for cooler pump sequence (PUMP) = 2 Pumps
Auto and there is a loss of flow.
Action to be Taken — The pump and machine will be shut
down. If there is another pump available, the control will start
that pump, restart the machine and clear the alarm. If no other
pump is available, the unit will remain OFF.
Reset Method — Manual.
Possible Causes — If this condition is encountered, check the
following items:
• interlock wiring circuit
• control signal to the pump controller
• cooler pump contactor for proper operation
• control voltage for proper voltage
Alarm 102 — Condenser Flow Switch Failure (P.15)
Criteria for Trip — The criteria are tested when the unit is ON.
This alarm will be tripped if:
• the flow switch fails to close after the Off/On delay
• the condenser pump control is enabled (Condenser Pump
Sequence, HPUM) and the condenser flow switch fails to
close after the condenser pump is commanded on for more
than one minute
• the flow switch is opened after normal operation.
Action to be Taken — For criteria 1 and 2 the compressor(s)
will not be started. For criteria 3 all compressors will stop with
no delay.
Reset Method — Manual.
Possible Causes — If this condition is encountered, check the
following items:
• low condenser water flow
• faulty flow switch
• flow switch wiring
• faulty channel on MBB (main mase board)
Reclaim Operation Failure
Alarm 103 — Circuit A (P.34)
Alarm 104 — Circuit B (P.35)
NOTE: Alarms 103 and 104 are not used or supported. If this
condition is encountered, confirm machine configuration.
High Condensing Temperature — Out of Compressor
Envelope
Alarm 105 — Circuit A (P.37)
Alarm 106 — Circuit B (P.38)
Criteria for Trip — The criterion is tested when the circuit is
ON. This alarm will be tripped if the circuit capacity is reduced
more than 8 times in 30 minutes due to high discharge gas tem-
peratures. If no override occurs in a 30-minute period, the
counter is reset.
Action to be Taken — The affected circuit will be shut down.
Reset Method — Automatic, after 30 minutes. If the alarm is
cleared via the Manual method, the counter will be reset to
zero.
MC
ERROR
CODE
MASTER SLAVE DESCRIPTION
01 XX
The master or slave water pump is not configured while the control of the lag unit pump is required
(lag_pump = 1)
02 X Master and slave units have the same network address.
03 X There is no slave configured at the slave address
04 XSlave pump_seq incorrect configuration
05 X
There is a conflict between the master and the slave LWT option: the master is configured for EWT control
while the slave is configured for LWT control.
06 X
There is a conflict between the master and the slave LWT option: the master is configured for LWT control
while the slave is configured for EWT control.
07 X
There is a conflict between the master and the slave pump option: the master is configured for lag pump
control while the slave is not configured for lag pump control.
08 X
There is a conflict between the master and the slave pump option: the master is not configured for lag pump
control while the slave is configured for lag pump control.
09 X X The slave chiller is in local or remote control (chilstat = 3)
10 X X The slave chiller is down due to fault (chilstat = 5)
11 X The master chiller operating type is not Master: master_oper_typ
12 X X No communication with slave.
13 X Master and slave heat cool status are not the same.
EWT — Entering Water Temperature
LWT — Leaving Water Temperature
FC
ERROR
CODE
DESCRIPTION
01 Unit size is unknown.
02 Reclaim option selected for Heat Pump machine.
03 Hot Gas Bypass configured for a Heat Pump machine.