Carrier 30XW150-400 specifications Alarm Codes cont

Table 49 — Alarm Codes (cont)

PREFIX		SUFFIX	ALARM	ALARM DESCRIPTION			REASON FOR ALARM	ACTION TAKEN	RESET	PROBABLE CAUSE
CODE		CODE	NUMBER					BY CONTROL	TYPE
A1, B1		10	132-10,	Compressor Y delta starter			If the delta mode current	Circuit shut down	Manual	Power supply to delta
			133-10	current increase failure alarm			is not 25% greater than			contactor not
							the current in Y mode			connected, faulty delta
										contactor or wiring,
										faulty CPM board
		11	132-11,	Compressor Contactor failure			CPM board detects	Circuit shut down	Manual	Faulty contactor, con-
			133-11				greater than 15% of MTA			tactor welded, wiring
							current for 10 seconds			error
							after shutting off the com-
							pressor contactor. Oil
							solenoid is energized.
		12	132-12,	Compressor Unable to stop			CPM board detects	Circuit shut down	Manual	Faulty contactor,
			133-12	motor			greater than 15% of MTA			contactor welded,
							current for 10 seconds			wiring error
							after three attempts
		13	132-13,	Compressor Phase reversal			CPM board detects phase	Circuit shut down	Manual	Terminal block power
			133-13				reversal from current			supply lead not in
							toroid			correct phase. Power
										supply leads going
										through toroid crossed
		14	132-14,	Compressor MTA configura-			MTA setting is out of the	Circuit shut down	Manual	Incorrect MTA setting,
			133-14	tion fault			allowed MTA range			faulty CPM board
		15	132-15,	Compressor Configuration			CPM board MTA setting	Circuit shut down	Manual	Incorrect CPM dip-
			133-15	switch mismatch			do not match factory			switch setting,
							configuration			incorrect factory MTA
										setting, faulty CPM
										board
		16	132-16,	Compressor Unexpected			CPM board dipswitch S1	Circuit shut down	Manual	Incorrect CPM dip-
			133-16	switch setting change			setting changed			switch setting, faulty
										CPM board
		17	132-17,	Compressor Power on reset			CPM board detects a	Circuit shut down	Manual	Power supply
			133-17				power failure			interruption
		18	132-18,	Compressor UL 1998 critical			Software error	Circuit shut down	Manual	Electric noise, faulty
			133-18	section software error						CPM board
		19	132-19,	Compressor UL 1998 current			Software error	Circuit shut down	Manual	Electric noise, faulty
			133-19	measure dual channel						CPM board
				mismatch
				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

DIAGNOSTIC ALARM CODES AND POSSIBLE CAUSES

Thermistor Failure

Alarm 1 — Cooler Fluid Entering (th.01)

Alarm 2 — Cooler Fluid Leaving (th.02)

Criteria for Trip — This alarm criterion is tested whether the unit is on or off if the temperature as measured by the thermis- tor is outside of the range –40 to 245 F (–40 to 118.3 C).

Action to be Taken — The unit shuts down normally, or is not allowed to start.

Reset Method — Automatic, the alarm will reset once the thermistor reading is within the expected range.

Possible Causes — If this condition is encountered, check the following items:

•sensor wiring to the Main Base Board

•sensor accuracy

See the Thermistors section on page 56 for thermistor de- scription, identifiers and connections.

Defrost Thermistor Failure

Alarm 3 — Circuit A (th.03)

Alarm 4 — Circuit B (th.04)

NOTE: Alarms 3 and 4 are not used or supported. If this condi- tion is encountered, confirm machine configuration.

Thermistor Failure

Alarm 5 — Condenser Entering Fluid (th.06)

Alarm 6 — Condenser Leaving Fluid (th.07)

NOTE: Alarms 5 and 6 are not used or supported. If this condi- tion is encountered, confirm machine configuration.

Condenser Reclaim Thermistor

Alarm 7— Reclaim Entering Fluid (th.08)

Alarm 8 — Reclaim Leaving Fluid (th.09)

NOTE: Alarms 7 and 8 are not used or supported. If this condi- tion is encountered, confirm machine configuration.

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