Carrier 17EX specifications Running Ð Temp Control, Running Ð Demand Limited

Table 12 Ð LID Primary and Secondary Messages and Custom Alarm/Alert Messages

with Troubleshooting Guides (cont)

I. NORMAL RUN WITH RESET, TEMPERATURE, OR DEMAND

PRIMARY MESSAGE	SECONDARY MESSAGE	PROBABLE CAUSE/REMEDY
RUNNING Ð RESET ACTIVE	4-20MA SIGNAL
RUNNING Ð RESET ACTIVE	REMOTE SENSOR CONTROL	Reset program active based on CONFIG screen setup.
RUNNING Ð RESET ACTIVE	CHW TEMP DIFFERENCE
RUNNING Ð TEMP CONTROL	LEAVING CHILLED WATER	Default method of temperature control.
RUNNING Ð TEMP CONTROL	ENTERING CHILLED WATER	ECW control activated on CONFIG screen.
RUNNING Ð TEMP CONTROL	TEMPERATURE RAMP LOADING	Ramp loading in effect. Use SERVICE1 screen to modify.
RUNNING Ð DEMAND LIMITED	BY DEMAND RAMP LOADING	Ramp loading in effect. Use SERVICE1 screen to modify.
RUNNING Ð DEMAND LIMITED	BY LOCAL DEMAND SETPOINT	Demand limit set point is , actual demand.
RUNNING Ð DEMAND LIMITED	BY 4-20MA SIGNAL
RUNNING Ð DEMAND LIMITED	BY CCN SIGNAL	Demand limit is active based on CONFIG screen setup.
RUNNING Ð DEMAND LIMITED	BY LOADSHED/REDLINE
RUNNING Ð TEMP CONTROL	HOT GAS BYPASS	Hot gas bypass option is energized. See surge prevention in the
		control section.
RUNNING Ð DEMAND LIMITED	BY LOCAL SIGNAL	Active demand limit manually overridden on STATUS01 table.
RUNNING Ð TEMP CONTROL	ICE BUILD MODE	Chiller is running under Ice Build temperature control.

J. NORMAL RUN OVERRIDES ACTIVE (ALERTS)

PRIMARY MESSAGE	SECONDARY MESSAGE		ALARM MESSAGE/PRIMARY CAUSE		ADDITIONAL CAUSE/REMEDY
RUN CAPACITY LIMITED	HIGH CONDENSER PRESSURE	CRP [VALUE] exceeded limit of [LIMIT]*.
		Condenser pressure override.
RUN CAPACITY LIMITED	HIGH MOTOR TEMPERATURE	MTRW [VALUE] exceeded limit of [LIMIT]*.
		Motor temperature override.			See Capacity Overrides, Table 4.
RUN CAPACITY LIMITED	LOW EVAP REFRIG TEMP	ERT [VALUE] exceeded limit of [LIMIT]*. Check
					Correct operating condition, modify set-
		refrigerant charge level.
					point, or release override.
RUN CAPACITY LIMITED	HIGH COMPRESSOR LIFT	Surge Prevention Override; lift too high for
		compressor.
RUN CAPACITY LIMITED	MANUAL GUIDE VANE TARGET	GV		TRG Run Capacity Limited: Manual guide
		vane target.

*[LIMIT] is shown on the LID as the temperature, pressure, voltage, etc., set point prede®ned or selected by the operator as an override, alert, or alarm condition. [VALUE] is the actual temperature, pressure, voltage, etc., at which the control tripped.

K. OUT-OF-RANGE SENSOR FAILURES

PRIMARY MESSAGE	SECONDARY MESSAGE	ALARM MESSAGE/PRIMARY CAUSE	ADDITIONAL CAUSE/REMEDY
SENSOR FAULT	LEAVING CHW TEMPERATURE	Sensor Fault: Check leaving CHW
		sensor.
SENSOR FAULT	ENTERING CHW TEMPERATURE	Sensor Fault: Check entering CHW
		sensor.
SENSOR FAULT	CONDENSER PRESSURE	Sensor Fault: Check condenser pressure
		transducer.
SENSOR FAULT	EVAPORATOR PRESSURE	Sensor Fault: Check evaporator pressure
		transducer.	See sensor test procedure and check
SENSOR FAULT	BEARING TEMPERATURE	Sensor Fault: Check bearing temperature
			sensors for proper operation and
		sensor.
			wiring.
SENSOR FAULT	MOTOR WINDING TEMP	Sensor Fault: Check motor temperature
		sensor.
SENSOR FAULT	DISCHARGE TEMPERATURE	Sensor Fault: Check discharge temperature
		sensor.
SENSOR FAULT	OIL SUMP TEMPERATURE	Sensor Fault: Check oil sump temperature
		sensor.
SENSOR FAULT	OIL PRESSURE TRANSDUCER	Sensor Fault: Check oil pressure
		transducer.

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