Carrier 19XRV specifications Loss, Communication, VFD Speed Alert, System Alert

Table 4 — ICVC Alert Codes (cont)

CHILLER ALERTS (cont)

ICVC FAULT	PRIMARY	SECONDARY	PRIMARY CAUSE	ADDITIONAL CAUSE/REMEDY
STATE	MESSAGE	MESSAGE
159	SENSOR ALERT	SPARE TEMPERATURE	159→Spare Temperature 2	Check sensor resistance or voltage drop.
		#2	[VALUE] exceeded limit of	Check for proper wiring to CCM connector J4.
			[LIMIT]*.	Check Spare Temp #2 Limit in SETUP1 screen.
161	LOSS OF	WITH WSM	161→WSM Cool Source —	Check settings in WSMDEFME screen.
	COMMUNICATION		Loss of Communication.	Check CCN communications link with WSM
				(Water System Manager) Module.
				Check Supervisory Part of WSM.
162	SENSOR ALERT	EVAPORATOR	162→Evaporator Approach	Check that refrigerant charge level is adequate,
		APPROACH	[VALUE] Exceeded Limit of	waterbox division plate gaskets are sealing,
			[LIMIT]*.	evaporator tubes are not fouled and that oil
				reclaim system is working.
				Check sensor resistance or voltage drop.
				Check for proper wiring.
				Check Evap Approach Alert setting in SETUP1
				screen.
163	SENSOR ALERT	CONDENSER APPROACH	163→Condenser Approach	Check sensors resistance or voltage drop.
			[VALUE] Exceeded Limit of	Check for proper wiring.
			[LIMIT]*.	Check Cond Approach Alert setting in SETUP1
				screen.
				Check for noncondensable gas in the
				condenser.
				Check that the condenser tubes are not fouled.
164	VFD SPEED ALERT	LOW VFD SPEED	164→Actual VFD Speed	Actual VFD Speed on COMPRESS screen must
			exceeded limit of Target VFD	be at least 90% of Target VFD Speed.
			Speed –10%.
165	AUTORESTART	LOW DC BUS VOLTAGE	165→Low DC Bus Voltage:	Verify phase to phase and phase to ground line
	PENDING		[VALUE] Exceeded Limit of	voltage.
			[LIMIT]*.
166	AUTORESTART	HIGH DC BUS VOLTAGE	166→High DC Bus Voltage:	Verify phase to phase and phase to ground line
	PENDING		[VALUE] Exceeded Limit of	voltage. Monitor AC line for high transient volt-
			[LIMIT]*.	age conditions.
167	SYSTEM ALERT	HIGH DISCHARGE TEMP	167→Comp Discharge Temp	Check sensor resistance or voltage drop.
			[VALUE] exceeded limit of	Check for proper wiring.
			[LIMIT]*.	Check for excessive starts.
				Check Comp Discharge Alert setting in SETUP1
				screen.
168	SENSOR ALERT	HUMIDITY SENSOR	168→Sensor Fault: Check	Check humidity sensor wiring on CCM connec-
		INPUT	Humidity Sensor Input Sensor.	tors J3 and J5. CCM switch SW2-1 must be in
				“OFF” position.
				Check Humidity Sensor Input in Controls Test.

*[LIMIT] is shown on the ICVC as the temperature, pressure, voltage, etc., set point predefined 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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