Carrier 19XL specifications Compressor Jumpstart and Refrigerant Protection

Table 9 Ð LID Primary and Secondary Messages and Custom Alarm/Alert Messages

with Troubleshooting Guides (cont)

G. COMPRESSOR JUMPSTART AND REFRIGERANT PROTECTION

PRIMARY MESSAGE	SECONDARY MESSAGE	ALARM MESSAGE/PRIMARY CAUSE				ADDITIONAL CAUSE/REMEDY
						Compressor is running with more than
UNAUTHORIZED	UNIT SHOULD BE	CA	P Emergency: Compressor			10% RLA and control is trying to shut it
						down. Throw power off to compressor if
OPERATION	STOPPED	running without control authorization.
						unable to stop. Determine cause before
						repowering.
POTENTIAL FREEZE-UP	EVAP PRESS/TEMP	ERT Emergency: Freeze-up				Determine cause. If pumping refrigerant
						out of chiller, stop operation and go over
	TOO LOW	prevention.
						pumpout procedures.
FAILURE TO STOP	DISCONNECT POWER	RUN			AUX Emergency: DISCON-	Starter and run and start contacts are
						energized while control tried to shut
		NECT POWER.
						down. Disconnect power to starter.
LOSS OF	WITH STARTER	Loss of Communication with Starter:				Check wiring from PSIO to SMM. Check
COMMUNCIATION		Check chiller.				SMM module troubleshooting procedures.
STARTER CONTACT	ABNORMAL 1CR OR	1CR		AUX Starter Contact Fault:		Starter run and start contacts energized
FAULT	RUN AUX	Check 1CR/1M aux. contacts.				while chiller was off. Disconnect power.
						The condenser pressure transducer is
		CRT [VALUE] exceeded limit of				reading a pressure that could freeze the
POTENTIAL FREEZE UP	COND PRESS/TEMP					water in the condenser tubes. Check for
		[LIMIT]* Emergency: Freeze-up				condenser refrigerant leaks, bad trans-
	TOO LOW
		prevention.				ducers, or transferred refrigerant. Place
						the unit in Pumpdown mode to eliminate
						ALARM if vessel is evacuated.

*[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 pressure, temperature, voltage, etc., at which the control tripped.

H. 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 upon Con®g table 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 Con®g table.
RUNNING Ð TEMP CONTROL	TEMPERATURE RAMP LOADING	Ramp loading in effect. Use Service1 table to modify.
RUNNING Ð DEMAND LIMITED	BY DEMAND RAMP LOADING	Ramp loading in effect. Use Service1 table to modify.
RUNNING Ð DEMAND LIMITED	BY LOCAL DEMAND SETPOINT	Demand limit setpoint is , actual demand.
RUNNING Ð DEMAND LIMITED	BY 4-20MA SIGNAL
RUNNING Ð DEMAND LIMITED	BY CCN SIGNAL	Demand limit is active based on Con®g table setup.
RUNNING Ð DEMAND LIMITED	BY LOADSHED/REDLINE
RUNNING Ð TEMP CONTROL	HOT GAS BYPASS	Hot Gas Bypass is energized. See surge prevention
		in the control section.
RUNNING Ð DEMAND LIMITED	BY LOCAL SIGNAL	Active demand limit manually overridden or Status01
		table.
RUNNING Ð TEMP CONTROL	ICE BUILD MODE	Chiller is running under Ice Build temperature control.
NOTE: See Legend on page 68.

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