Carrier 17EX Operation, Potential FREEZE-UP, Failure to Stop, Loss, Communication, Fault

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

with Troubleshooting Guides (cont)

G. START-UP FAILURES: This is an alarm condition. A manual reset is required to clear.

PRIMARY MESSAGE	SECONDARY MESSAGE			ALARM MESSAGE/PRIMARY CAUSE			ADDITIONAL CAUSE/REMEDY
FAILURE TO START	LOW OIL PRESSURE	OILPD [VALUE] exceeded limit of [LIMIT]*. Check					Check for closed oil supply valves. Check oil ®lter.
		oil pump system.					Check for low oil temperature. Check transducer
							accuracy.
FAILURE TO START	OIL PRESS SENSOR FAULT	OILPD [VALUE] exceeded limit of [LIMIT]*. Check					Check for excessive refrigerant in oil sump. Run oil
		oil pressure sensor.					pump manually for 5 minutes. Check calibration of
							oil pressure differential ampli®er modules. Check wir-
							ing. Replace transducers if necessary.
FAILURE TO START	LOW CHILLED WATER FLOW	EVFL Evap Flow Fault: Check water pump/¯ow					Check wiring to ¯ow switch. Check through CON-
		switch.					TROL TEST for proper switch operation.
FAILURE TO START	LOW CONDENSER	CDFL Cond. Flow Fault: Check water pump/¯ow					Check wiring to ¯ow switch. Check through CON-
	WATER FLOW	switch.					TROL TEST for proper switch operation.
FAILURE TO START	STARTER FAULT	STR				FLT Starter Fault: Check Starter for Fault	A starter protective device has faulted. Check starter
		Source.					for ground fault, voltage trip, temperature trip, etc.
FAILURE TO START	STARTER OVERLOAD TRIP	STR				FLT Starter Overload Trip: Check amps	Reset overloads, check ICR relay before restarting
		calibration/reset overload.					chiller.
FAILURE TO START	LINE VOLTAGE DROPOUT	V	P Single-Cycle Dropout Detected: Check volt-				Check voltage supply. Check transformers for sup-
		age supply.					ply. Check with utility if voltage supply is erratic. Moni-
							tor must be installed to con®rm consistent, single-
							cycle dropouts. Check low oil pressure switch.
FAILURE TO START	HIGH CONDENSER	High Condenser Pressure [LIMIT]:* Check switch					Check for proper design condenser ¯ow and tem-
	PRESSURE	2C aux, and water temperature/¯ow.					perature. Check condenser approach. Check 2C aux-
							iliary contacts on oil sump starter. Check high pres-
							sure switch.
FAILURE TO START	EXCESS ACCELERATION	CA			P Excess Acceleration: Check guide vane clo-		Check that guide vanes are closed at start-up. Check
	TIME	sure at start-up.					starter for proper operation. Reduce unit pressure
							if possible.
FAILURE TO START	STARTER TRANSITION	RUN				AUX Starter Transition Fault: Check 1CR/	Check starter for proper operation.
	FAULT	1M/Interlock mechanism.					Run contact failed to close.
FAILURE TO START	1CR AUX CONTACT FAULT	1CR				AUX Starter Contact Fault: Check 1CR/1M	Check starter for proper operation.
		aux. contacts.					Start contact failed to close.
FAILURE TO START	MOTOR AMPS NOT SENSED	CA			P Motor Amps Not Sensed: Check motor load		Check for proper motor amps signal to SMM. Check
		signal.					wiring from SMM to current transformer. Check main
							motor circuit breaker for trip.
FAILURE TO START	CHECK REFRIGERANT TYPE	Current Refrigerant Properties Abnormal Ð Check					Pressures at transducers indicate another refriger-
		Selection of refrigerant type.					ant type in control test. Make sure to access the AT-
							TACH TO NETWORK DEVICE screen after speci-
							fying HFC-134a refrigerant type.
FAILURE TO START	LOW OIL PRESSURE	Low Oil Pressure [LIMIT]:* Check oil pressure switch/					The oil pressure differential switch is open when the
		pump and 2C aux.					compressor tried to start. Check the switch for proper
							operation. Also, check the oil pump interlock (2C aux)
							in the power panel and the high condenser pres-
							sure switch.
FAILURE TO START	LOW GEAR OIL PRESSURE	GEAROILP [VALUE] exceeded limit of [LIMIT].*					Check for closed oil supply valves. Check oil ®lter.
		Check gear oil pump/®lter.					Check transducer accuracy.
FAILURE TO START	GEAR OIL PRESSURE SENSOR	Gear Oil Pressure Transducer Out of Range [VALUE].					Check calibration of transducer. Replace if
							necessary.

*[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. COMPRESSOR JUMPSTART AND REFRIGERANT PROTECTION

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

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