Carrier 30XW150-400 specifications Master/Slave Alarm Code, Illegal Configuration Alarm Code

			Table 50 — Master/Slave Alarm Code
MC
ERROR	MASTER	SLAVE	DESCRIPTION
CODE
01	X	X	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	X		Slave 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.

LEGEND

EWT — Entering Water Temperature

LWT — Leaving Water Temperature

Table 51 — Illegal Configuration Alarm Code

FC
ERROR	DESCRIPTION
CODE

01Unit size is unknown.

02Reclaim option selected for Heat Pump machine.

03Hot Gas Bypass configured for a Heat Pump machine.

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.

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 (on 208-volt systems, be sure the proper tap on TRAN1 is utilized)

Alarm 102 — Condenser Flow Switch Failure (P.15)

Criteria for Trip — The criteria are tested whether the unit is ON or OFF. This alarm is generated if the lockout switch (located in the Energy Management Module) is closed during normal operation.

Action to be Taken — All compressors are shut down immedi- ately without going through pumpdown, and unit is not allowed to start.

Reset Method — Automatic, first occurrence in 24 hours. Manual, if more than one occurrence in 24 hours.

Possible Causes — If this condition is encountered, check the following items:

•chilled water flow switch operation

•water flow. Be sure all water isolation valves are open and check water strainer for a restriction

•interlock wiring circuit

•power supply to the pump

•control signal to the pump controller

•condenser water pump operation

•condenser pump contactor for proper operation

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.

Possible Causes — If this condition is encountered, check the following items:

•Maximum Condensing Temperature (MCT) for the proper setting

•noncondensables in the refrigerant circuit

•low condenser water flow

•refrigerant charge (overcharged)

•condenser tubes fouled

•discharge service valve to be sure that it is open. Check the discharge pressure transducer for accuracy

•unit configuration

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