Carrier 30XW150-400 specifications Alarm Codes

Table 49 — Alarm Codes

PREFIX		SUFFIX	ALARM	ALARM DESCRIPTION			REASON FOR ALARM	ACTION TAKEN	RESET	PROBABLE CAUSE
CODE		CODE	NUMBER					BY CONTROL	TYPE
th		01	1	Cooler Entering Fluid			Temperature measured	Unit be shut down or	Automatic	Faulty Sensor,
				Thermistor			by the controller is	not allowed to start		wiring error or failed
		02	2	Cooler Leaving Fluid			outside of the range			main base board
							of –40 F to 245 F
				Thermistor
		03	3	Circuit A Defrost Thermistor				None	Automatic	Configuration error
		04	4	Circuit B Defrost Thermistor
		06	5	Condenser Entering
				Fluid Thermistor
		07	6	Condenser Leaving
				Fluid Thermistor
		08	7	Reclaim Condenser
				Entering Thermistor
		09	8	Reclaim Condenser
				Leaving Thermistor
		11	10	Master/Slave Common Fluid				Dual chiller deacti-	Automatic	Faulty Sensor,
				Thermistor				vated. Master and		wiring error or failed
								slave machines		main base board
								operate in stand-
								alone mode
		12	11	Circuit A Suction Gas				Circuit shut down or	Automatic	Faulty Sensor,
				Thermistor				not allowed to start		wiring error, failed
										EXV or CPM board
		13	12	Circuit B Suction Gas
				Thermistor
		15	14	Circuit A Discharge Gas
				Thermistor
		16	15	Circuit B Discharge Gas
				Thermistor
		18	17	Circuit A Condenser Sub-				Not supported	Automatic	Configuration error
				cooling Liquid Thermistor
		19	18	Circuit B Condenser Sub-
				cooling Liquid Thermistor
		21	19	Space Temperature				Alarm tripped	Automatic	Faulty Sensor, wiring
				Thermistor						error, failed EMM
										board
		23	20	Cooler heater feedback				None	Automatic	Configuration error
				thermistor
		24	21	Circuit A Economizer Gas				Circuit economizer	Automatic	Faulty Sensor,
				Thermistor				function disabled		wiring error, failed
										EXV board
		25	22	Circuit B Economizer Gas
				Thermistor
Pr		01	26	Circuit A Discharge			Measured voltage is	Circuit shut down or	Automatic	Faulty transducer,
				Transducer			0 vdc or SST > EWT and	not allowed to start		wiring error, failed
		02	27	Circuit B Discharge			EXV < 50% for 1 minute			main base board or
										fan board
				Transducer
		04	29	Circuit A Suction Transducer
		05	30	Circuit B Suction Transducer
		07	32	Circuit A Reclaim Pump-				None	Automatic	Configuration error
				down Pressure Transducer
		08	33	Circuit B Reclaim Pump-
				down Pressure Transducer
		10	34	Circuit A Oil Pressure				Circuit shut down or	Automatic	Faulty transducer,
				Transducer				not allowed to start		wiring error, failed
		11	35	Circuit B Oil Pressure						CPM board
				Transducer
		13	37	Circuit A Economizer			Measured voltage is
				Pressure Transducer			0 vdc
		14	38	Circuit B Economizer
				Pressure Transducer
				LEGEND
CCN	— Carrier Comfort Network®				MLV	— Minimum Load Valve
CPM	— Compressor Protection Module				MOP	— Maximum Operating Pressure
EMM	— Energy Management Module				MTA	— Must Trip Amps
EWT	— Entering Water Temperature				SST	— Saturated Suction Temperature
EXV	— Electronic Expansion Valve				UL	— Underwriters Laboratories
HPS	— High Pressure Switch

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