Sterling 882.93092.01 manual System fault

						system fault
			Chiller too small for load			Verify with sales representative
						the sizing of the chiller for the
						application.
Low Condenser Differential	18	W	Low discharge pressure or			Contact customer service
Pressure Warning			high suction pressure
Condenser Inlet Temp Sensor			Sensor wires loose from			Verify wiring at terminal block.
			controller terminal block		.
Failure (optional with sensor	19	W	Sensor wires broke between			Replace temperature sensor
pack)			sensor and controller terminal
			block.
			Sensor wires loose from			Verify wiring at terminal block.
Chiller In Fluid Temp Sensor	20	W	controller terminal block		.
			Sensor wires broke between			Replace temperature sensor
Failure
			sensor and controller terminal
			block.			Backflush evaporator
			Blocked evaporator
Evaporator Differential Pressure	21	W	Blocked Y-strainer			Blow down y-strainer by
						opening blow-down valve or
						clean internal strainer.
			Dirty air cooled condenser or			Clean filter or condenser
			inlet filter
			Dirty water cooled condenser			Clean condenser or verify
			or condenser valve failure			operation of condenser valve
			Condenser fan overload			See Fan Overload Fault
High Discharge Pressure Warning	22	W	Condenser fan VFD fault			See VFD Fault
			Ambient air or condenser			Verify supply temperature or air
			water temperature too high			removal capacity.
			Too much refrigerant in			Contact Customer Service for
			system.			assistance
			Liquid line valves closed.			Verify operation of valve and
						wiring on controller
			Fluid temperature higher than			Verify parameter and adjust if
			parameter.			necessary.
High Fluid Temp Warning	23	W	Refrigeration system fault			Check for any refrigeration
						system fault
			Chiller too small for load			Verify with sales representative
						the sizing of the chiller for the
						application.
CC = Compressor Critical	SC = System Critical			PC = Process Critical		W = Warning
						Solution
Alarm Name	#	Type	Possible Cause
			Fluid level higher than			Verify value in parameter
High Level Fault	24	W	parameter setting.			Open drain valve and remove
			Too much fluid in system
						some fluid from system so that
						level is below high level fault.
			Tank sensor failure			Replace sensor
			Fluid level higher than			Verify value in parameter
			parameter setting.
High Level Warning	25	W				Open drain valve and remove
			Too much fluid in system			some fluid from system so that
						level is below high level
						warning.
			Tank sensor failure			Replace sensor
Compressor Differential Pressure	26	CC	Low discharge pressure or			Contact customer service
Fault			high suction pressure
High Suction Pressure Warning	27	W	From Process fluid			Verify flow through system.
			temperature too high			Make corrections as necessary.
Low Discharge Pressure Warning	28	W	Ambient air or condenser			Verify ambient air temperature

GP Series Portable Chillers Chapter 6: Troubleshooting 53 of 90