Carrier 69NT40-511-199, 69NT40-521 manual Error Description, Microprocessor

CODE	TITLE		DESCRIPTION
#
		Alarm 63 is triggered by the current limiting system. If the compressor is ON and
		current limiting procedures cannot maintain a current level below the user
AL63	Current Over Limit	selected limit, the current limit alarm is activated.This alarm is a display alarm and
		is inactivated by power cycling the unit, changing the current limit via the code
		select Cd32, or if the suction modulation valve (SMV) is allowed to open to 100%
		and the suction solenoid valve is allowed to open.
	Discharge	Alarm 64 is triggered if the discharge temperature is sensed greater than 135_C
		(275_F) for three continuous minutes, if it exceeds 149_C (300_F), or if the
AL64	Temperature Over
		sensor is out of range. This is a display alarm and has no associated failure
	Limit (CPDT)
		action.
	Discharge Pressure	Alarm 65 is triggered by a compressor discharge transducer reading outside the
AL65	Transducer Failure	valid range of 73.20 cm Hg (30 in Hg) to 32.34 Kg/cm2 (460 psig). This is a
	(DPT)	display alarm and has no associated failure action.
	Suction Pressure	Alarm 66 is triggered by a suction pressure transducer reading outside the valid
AL66	Transducer Failure	range of 73.20 cm Hg (30 in Hg) to 32.34 Kg/cm2 (460 psig). This is a display
	(SPT)	alarm and has no associated failure action.
	Humidity Sensor	Alarm 67 is triggered by a humidity sensor reading outside the valid range of 0%
AL67		to 100% relative humidity. If alarm AL67 is active and the dehumidification mode
	Failure	was previously activated, then the dehumidification mode will be deactivated.
	Condenser Pressure	Alarm 68 is triggered by a condenser pressure transducer reading outside the
AL68	Transducer Failure	valid range of 73.20 cm Hg (30 in Hg) to 32.34 Kg/cm2 (460 psig). This is a
	(CPT)	display alarm and has no associated failure action.
	Suction Temperature	Alarm 69 is triggered by a suction temperature sensor reading outside the valid
AL69	Sensor Failure	range of --60_C (--76_F) to 150_C (302_F). This is a display alarm and has no
	(CPSS)	associated failure action.
		NOTE
If the Controller is configured for four probes without a DataCORDER, the DataCORDER alarms AL70
and AL71 (See Table 3-7) will be processed as Controller alarms AL70 and AL71.
		The Controller performs self-check routines. if an internal failure occurs, an ERR
		#0--5 will appear on the display. This is an indication the Controller needs to be
		replaced.
				3
		ERROR	DESCRIPTION	SECTION
		#0 -- RAM failure	Indicates that the Controller working memory has
			failed.
	Internal	#1 -- Program Memory	Indicates a problem with the Controller program.
ERR		failure
	Microprocessor
#			The Controller program has entered a mode whereby
	Failure	#2 -- Watchdog time--out
			the Controller program has stopped executing.
		#3 -- On board timer	The on board timers are no longer operational. Timed
		failure	items such as; defrost, etc. may not work.
		#4 -- Internal counter	Internal multi-purpose counters have failed. These
		failure	counters are used for timers and other items.
		#5 -- A-D failure	The Controller’s Analog to Digital (A-D) converter has
			failed.
Entr	Enter Setpoint
	(Press Arrow &	The Controller is prompting the operator to enter a set point.
StPt	Enter)
	Low Mains Voltage
	(Function Codes	This message will be alternately displayed with the set point whenever the mains
LO	Cd27--38 disabled
		voltage is less than 75% of its proper voltage.
	and NO alarm
	stored.)

3-13 T-268-07