Sterling 30RA010-055 manual Alarm and Alert Codes cont

Table 29 — Alarm and Alert Codes (cont)

ALARM/	ALARM		WHY WAS THIS	ACTION TAKEN	RESET	PROBABLE
ALERT	OR	DESCRIPTION	ALARM
				BY CONTROL	METHOD	CAUSE
CODE	ALERT		GENERATED?
T196	Alert	Flow Lost While Pump 1	Cooler flow switch contacts	All compressors	Manual	Wiring error, pump
		Running	open for 3 seconds after	shut down. Pump 1		circuit breaker
			initially made	turned off. Pump 2 will		tripped, contactor fail-
				be started if available.		ure
				Chiller allowed to run if
				Pump 2 successfully
				starts and flow switch
				is closed.
T197	Alert	Flow Lost While Pump 2	Cooler flow switch contacts	All compressors shut	Manual	Wiring error, pump
		Running	open for 3 seconds after	down. Pump 2 turned		circuit breaker
			initially made	off. Pump 1 will be		tripped, contactor
				started if available.		failure
				Chiller allowed to run if
				Pump 1 successfully
				starts and flow switch
				is closed.
T198	Alert	Cooler pump 1 Aux	Pump 1 Auxiliary Contacts	Chiller not allowed to	Automatic when	Wiring error, faulty
		Contacts Closed While	closed for 26 seconds	start	aux contacts open	pump contactor
		Pump Off	when pump state is off			(welded contacts)
T199	Alert	Cooler pump 2 Aux	Pump 2 Auxiliary Contacts	Chiller not allowed to	Automatic when	Wiring error, faulty
		Contacts Closed While	closed for 26 seconds	start	aux contacts open	pump contactor
		Pump Off	when pump state is off			(welded contacts)
T200	Alert	Cooler Flow/Interlock	Cooler flow switch contacts	Chiller not allowed to	Manual	Wiring error, pump
		Contacts failed to Close	failed to close within	start. For models with		circuit breaker
		at start-up	1 minute (if cooler pump	dual pumps, the		tripped, contactor
			control is enabled) or	second pump will be		failure, faulty flow
			within 5 minutes (if cooler	started if available		switch or interlock
			pump control is not
			enabled) after start-up
A201	Alarm	Cooler Flow/Interlock	Flow switch opens for at	All compressors shut	Manual	Cooler pump failure,
		Contacts Opened	least 3 seconds after	down. For models with		faulty flow switch or
		During Normal	being initially closed	dual pumps, the		interlock, pump
		Operation		second pump will be		circuit breaker
				started if available		tripped
A202	Alarm	Cooler Pump Interlock	If configured for cooler	Chiller shut down	Automatic when	Wiring error, faulty
		Closed When Pump is	pump control and flow		aux contacts open	pump contactor
		Off	switch input is closed for			(welded contacts)
			5 minutes while pump
			output(s) are off
T203	Alert	Loss of Communication	Master chiller MBB	Dual chiller control	Automatic	Wiring error, faulty
		with slave chiller	loses communication	disabled. Chiller runs		wiring, failed Slave
			with slave chiller MBB	as a stand-alone		chiller MBB module,
				machine.		power loss at slave
						chiller, wrong slave
						address.
T204	Alert	Loss of Communication	Slave chiller MBB loses	Dual chiller control	Automatic	Wiring error, faulty
		with master chiller	communication with	disabled. Chiller runs		wiring, failed master
			master chiller MBB	as a stand-alone		chiller MBB module,
				machine		power loss at Master
						chiller.
T205	Alert	Master and slave chiller	Master and slave chiller	Dual chiller routine	Automatic	SCN Address for
		with same address	have the same SCN	disabled. Master/slave		both chillers is the
			address (SCN.A)	run as stand-alone		same. Must be
				chillers.		different. Check
						SCN.A under the
						OPT2 sub-mode in
						Configuration at both
						chillers.
T206	Alert	High Leaving Chilled	LWT read is greater than	Alert only. No action	Automatic	Building load greater
		Water Temperature	LCW Alert Limit, Total	taken.		than unit capacity,
			capacity is 100% and LWT			low water/brine flow
			is greater than LWT			or compressor fault.
			reading one minute ago			Check for other
						alarms/alerts.
A207	Alarm	Cooler Freeze	Cooler EWT or LWT is less	Chiller shutdown	Both EWT and LWT	Faulty thermistor
		Protection	than Brine Freeze (BR.FZ)	without going through	must be at least 6 F	(T1/T2), low water
				pumpdown. Cooler	(3.3 C) above Brine	flow.
				pump continues to	Freeze point (BR.FZ).
				run a minimum of	Automatic for first,
				5 minutes (if control	Manual reset thereaf-
				enabled).	ter.
A208	Alarm	EWT or LWT	Cooler EWT is less than	Chiller shutdown.	Manual	Faulty cooler pump,
		Thermistor failure	LWT by 3° F (1.7° C) for	Cooler pump shut off		low water flow,
			1 minute after a circuit is	(if control enabled).		plugged fluid strainer.
			started
T300	Alert	Cooler Pump 1	Pump 1 Service	None	Automatic	Routine pump
		Scheduled	Countdown (P.1.DN)			maintenance
		Maintenance Due	expired. Complete pump 1			required
			maintenance and enter
			'YES' for Pump 1
			Maintenance Done
			(P.1.MN) item.

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