Carrier 69NT40-521, 69NT40-511-199 manual Check for recharging or replacing battery pack

CODE	TITLE	DESCRIPTION
#
		Alarm 53 is caused by the nicad battery pack being too low of a charge for
	NiCad Battery Pack	battery-backed recording.
AL53		NOTE
	Failure
		Check for recharging or replacing battery pack.
		Alarm 54 is activated by an invalid primary supply sensor reading that is sensed
		outside the range of --50 to +70_C (--58_F to +158_F) or if the probe check logic
		has determined there is a fault with this sensor. If Alarm 54 is activated and the
	Primary Supply Air	primary supply is the control sensor, the secondary supply sensor will be used for
		control if the unit is so equipped. If the unit does not have a secondary supply
AL54	Sensor Failure
		probe, and AL54 is activated, the (primary return sensor, minus 2_C) will be used
	(STS)
		for control.
		NOTE
		The P5 Pre-Trip test must be run to inactivate the alarm (refer to section 3.2.1).
	DataCORDER	This alarm has been activated to indicate the DataCORDER has been disabled
AL55		due to internal failure. To clear this alarm, simply reconfigure the unit to its OEM
	Failure	model number by using the multi-configuration card.
		Alarm 56 is activated by an invalid primary return sensor reading that is outside
		the range of --50 to +70_C (--58_F to +158_F). If Alarm 56 is activated and the
	Primary Return Air	primary return is the control sensor, the secondary return sensor will be used for
		control if the unit is so equipped. If the unit is not equipped with a secondary
AL56	Sensor Failure
		return sensor or it fails, the primary supply sensor will be used for control.
	(RTS)
		NOTE
		The P5 Pre-Trip test must be run to inactivate the alarm (refer to section 3.2.1).
	Ambient	Alarm 57 is triggered by an ambient temperature reading outside the valid range
AL57	Temperature Sensor
	Failure (AMBS)	from --50_C (--58_F) to +70_C (+158_F).
	Compressor High	Alarm 58 is triggered when the compressor high discharge pressure safety switch
AL58	Pressure Safety	(HPS) remains open for at least one minute. This alarm will remain active until the
	(HPS)	pressure switch resets, at which time the compressor will restart.
	Heat Termination	Alarm 59 is triggered by the opening of the heat termination thermostat (HTT) and
AL59	Thermostat (HTT)	will result in the disabling of the heater. This alarm will remain active until the
	Safety	thermostat resets.
		Alarm 60 is an indication of a probable failure of the defrost termination sensor
		(DTS). It is triggered by the opening of the heat termination thermostat (HTT) or
	Defrost Termination	the failure of the DTS to go above 25.6_C (78_F) within two hours of defrost
		initiation. After one-half hour with a frozen range set point, or one-half hour of
AL60	Sensor Failure	continuous compressor run time, if the return air falls below 7_C (45_F), the
	(DTS)	Controller checks to ensure defrost termination sensor (DTS) has dropped to
		10_C or below. If not, a DTS failure alarm is given and the defrost mode is
		operated off of return temperature sensor (RTS). The defrost mode will be
		terminated after one hour by the Controller.
		Alarm 61 is the heater alarm caused by detection of improper amperage resulting
AL61	Heaters Failure	from heater activation (deactivation). Each phase of the power source is checked
		for proper amperage.This alarm is a display alarm with no resulting failure action,
		and will be reset by a proper amp draw of the heater.
		Alarm 62 is triggered by improper current draw increase (or decrease) resulting
	Compressor Circuit	from compressor turn on (or off). The compressor is expected to draw a minimum
AL62		of 2 amps; failure to do so will activate the alarm.This is a display alarm with no
	Failure	associated failure action and will be reset by a proper amp draw of the
		compressor.

T-268-07 3-12