Carrier 19XRV specifications RUN Capacity, Limited

Table 4 — ICVC Alert Codes (cont)

NORMAL RUN WITH OVERRIDES

ICVC FAULT	PRIMARY	SECONDARY	PRIMARY CAUSE	ADDITIONAL CAUSE/REMEDY
STATE	MESSAGE	MESSAGE
120	RUN CAPACITY	HIGH CONDENSER	120→Condenser Pressure	Check condenser water pump operation.
	LIMITED	PRESSURE	[VALUE] exceeded limit of	Check for high condenser water temperatures or
			[LIMIT]*.	low flow rate. Verify that isolation valves are
				open.
				Check Cond Press Override setting in SETUP1.
121	RUN CAPACITY	HIGH MOTOR	121→Comp Motor Winding	Check for closed valves or restriction in motor
	LIMITED	TEMPERATURE	Temp [VALUE] exceeded	cooling lines.
			limit of [LIMIT]*.	Check for closed refrigerant isolation valves.
				Check Comp Motor Temp Override setting in
				SETUP1.
122	RUN CAPACITY	LOW EVAP REFRIG	122→Evaporator Refrig	Check refrigerant charge.
	LIMITED	TEMP	Temp [VALUE] exceeded	Check that optional cooler liquid line isolation
			limit of [LIMIT]*.	valve is fully open.
				Check for excessive condenser flow or low
				chilled water flow.
				Check for low entering cooler temperature.
				Check that condenser inlet and outlet water
				nozzles are piped correctly.
				Check for waterbox division plate gasket bypass.
123	RUN CAPACITY	HIGH COMPRESSOR	123→Surge Prevention	Check for high condenser water temperature or
	LIMITED	LIFT	Override: Lift Too High For	low suction temperature.
			Compressor	Check for high Evaporator or Condenser
				approaches.
				Check surge prevention parameters in
				OPTIONS screen.
124	RUN CAPACITY	MANUAL GUIDE VANE	124→Run Capacity Limited:	Target Guide Vane Position has been forced in
	LIMITED	TARGET	Manual Guide Vane Target.	the COMPRESS screen. Select and RELEASE
				force to return to normal (automatic) operation.
125	RUN CAPACITY	LOW DISCHARGE	No Alert message.	Check for oil loss or excess refrigerant charge.
	LIMITED	SUPERHEAT		Verify that the valves in the oil reclaim lines are
				open.
126	RUN CAPACITY	HIGH RECTIFIER TEMP	126→Rectifier Temperature	Check Rectifier Temp Override in SETUP1
	LIMITED		[VALUE] exceeded limit of	screen.
			[LIMIT]*.	Check that VFD refrigerant isolation valves are
				open.
				Check VFD refrigerant cooling solenoid.
				Check for proper VFD cooling fan operation and
				blockage.
127	RUN CAPACITY	MANUAL SPEED	No Alert message.	Chiller is not in automatic temperature control.
	LIMITED	CONTROL
128	RUN CAPACITY	HIGH INVERTER TEMP	128→Inverter Temperature	Check Inverter Temp Override in SETUP1
	LIMITED		[VALUE] exceeded limit of	screen.
			[LIMIT]*.	Check that VFD refrigerant isolation valves are
				open.
				Check VFD refrigerant cooling solenoid.
				Check for proper VFD cooling fan operation and
				blockage.

*[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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