Carrier Guide Vane Calibration and Alarm Codes for Chilllers

Table 11 — CVC/ICVC Primary and Secondary Messages and

Custom Alarm/Alert Messages with Troubleshooting Guides (cont)

D. PRE-START ALERTS: These alerts only delay start-up. When alert is corrected, the start-up will continue. No reset is necessary.

STATE	PRIMARY	SECONDARY	ALARM MESSAGE	ADDITIONAL CAUSE/REMEDY
	MESSAGE	MESSAGE	PRIMARY CAUSE
100	PRESTART	STARTS LIMIT	100->Excessive compressor	Depress the RESET softkey if additional start is
	ALERT	EXCEEDED	starts (8 in 12 hours)	required. Reassess start-up requirements.
101	PRESTART	HIGH BEARING	101->Comp Thrust Bearing	Check oil heater for proper operation.
	ALERT	TEMPERATURE	Temp [VALUE] exceeded	Check for low oil level, partially closed coil supply
			limit of [LIMIT]*.	valves, clogged oil filters, etc.
				Check the sensor wiring and accuracy.
				Check configurable range in SETUP1 screen.
102	PRESTART	HIGH MOTOR	102->Comp Motor Winding Temp	Check motor sensors for wiring and accuracy.
	ALERT	TEMPERATURE	[VALUE] exceeded limit	Check motor cooling line for proper operation, or
			of [LIMIT]*.	restrictions.
				Check for excessive starts within a short time span.
				Check configurable range in SETUP1 screen.
103	PRESTART	HIGH DISCHARGE	103->Comp Discharge Temp	Allow discharge sensor to cool.
	ALERT	TEMP	[VALUE] exceeded limit of	Check for sensor wiring and accuracy.
			[LIMIT]*.	Check for excessive starts.
				Check configurable range in SETUP1 screen.
104	PRESTART	LOW REFRIGERANT	104->Evaporator Refrig Temp	Check transducer wiring and accuracy.
	ALERT	TEMP	[VALUE] exceeded limit of	Check for low chilled fluid supply temperatures.
			[LIMIT]*.	Check refrigerant charge.
105	PRESTART	LOW OIL	105->Oil Sump Temp [VALUE]	Check oil heater contactor/relay and power.
	ALERT	TEMPERATURE	exceeded limit of [LIMIT]*.	Check oil level and oil pump operation.
106	PRESTART	HIGH CONDENSER	106->Condenser Pressure	Check transducer wiring and accuracy.
	ALERT	PRESSURE	[VALUE] exceeded limit of	Check for high condenser water temperatures.
			[LIMIT]*.
107	PRESTART	LOW LINE	107->Average Line Voltage	Check voltage supply. Check voltage transformers.
	ALERT	VOLTAGE	[VALUE] exceeded limit of	Consult power utility if voltage is low.
			[LIMIT]*.
108	PRESTART	HIGH LINE	108->Average Line Voltage	Check voltage supply.
	ALERT	VOLTAGE	[VALUE] exceeded limit of	Check power transformers.
			[LIMIT]*.	Consult power utility if voltage is high.
109	PRESTART	GUIDE VANE	109->Actual Guide Vane	Calibrate guide vane actuator in Control Test.
	ALERT	CALIBRATION	Pos Calibration Required
			Before Start-Up

*[LIMIT] is shown on the CVC/ICVC as temperature, pressure, voltage, etc., predefined or selected by the operator as an override or an alert. [VALUE] is the actual pressure, temperature, voltage, etc., at which the control tripped.

E. START-UP IN PROGRESS

PRIMARY MESSAGE	SECONDARY MESSAGE	CAUSE/REMEDY
STARTUP IN PROGRESS	OCCUPIED MODE	Chiller is starting. Time schedule is occupied.
STARTUP IN PROGRESS	REMOTE CONTACT CLOSED	Chiller is starting. Remote contacts are enabled and closed.
STARTUP IN PROGRESS	START COMMAND IN EFFECT	Chiller is starting. Chiller START/STOP in MAINSTAT manually forced to
		start.
AUTORESTART IN PROGRESS	OCCUPIED MODE	Chiller is starting after power failure. Time schedule is occupied.
AUTORESTART IN PROGRESS	REMOTE CONTACT CLOSED	Chiller is starting after power failure. Remote contacts are enabled and
		closed.
AUTORESTART IN PROGRESS	START COMMAND IN EFFECT	Chiller is starting after power failure. Chiller START/STOP on MAINSTAT
		manually forced to start.

F. NORMAL RUN

PRIMARY MESSAGE	SECONDARY MESSAGE	CAUSE/REMEDY
RUNNING — RESET ACTIVE	4-20 mA SIGNAL	Auto chilled water reset active based on external input.
RUNNING — RESET ACTIVE	REMOTE TEMP SENSOR	Auto chilled water reset active based on external input.
RUNNING — RESET ACTIVE	CHW TEMP DIFFERENCE	Auto chilled water reset active based on cooler ∆T.
RUNNING — TEMP CONTROL	LEAVING CHILLED WATER	Default method of temperature control.
RUNNING — TEMP CONTROL	ENTERING CHILLED WATER	Entering Chilled Water (ECW) control enabled in TEMP_CTL screen
RUNNING — TEMP CONTROL	TEMPERATURE RAMP LOADING	Ramp Loading in effect. Use RAMP_DEM screen to modify.
RUNNING — DEMAND LIMITED	BY DEMAND RAMP LOADING	Ramp Loading in effect. Use RAMP_DEM screen to modify.
RUNNING — DEMAND LIMITED	BY LOCAL DEMAND SETPOINT	Demand limit set point is less than actual demand.
RUNNING — DEMAND LIMITED	BY 4-20 mA SIGNAL	Demand limit is active based on external auto demand limit option.
RUNNING — DEMAND LIMITED	BY CCN SIGNAL	Demand limit is active based on control limit signal from CCN.
RUNNING — DEMAND LIMITED	BY LOADSHED/REDLINE	Demand limit is active based on LOADSHED screen set-up.
RUNNING — TEMP CONTROL	HOT GAS BYPASS	Hot gas bypass option is energized. See stall prevention in the control
		section.
RUNNING — DEMAND LIMITED	BY LOCAL SIGNAL	Active demand limit manually overridden on MAINSTAT table.
RUNNING —TEMP CONTROL	ICE BUILD MODE	Chiller is running under Ice Build temperature control.

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