Carrier 69NT40-521, 69NT40-511-199 manual Code Title Description

CODE	TITLE	DESCRIPTION
#
		Inapplicable Functions Display ----------
		The current limit is the maximum current demand allowed on any phase at any
		time. Limiting the unit’s current (amperage) reduces the load on the main power
Cd32	Current Limit	and lowers the compressor discharge pressure. When desirable, the limit can be
	(Amperes)	lowered. Note, however, that capacity is also reduced. The five values for 460vac
		operation are:
		15, 17, 19, 21 (Factory Default), 23
		This code is only applicable to units with a humidity sensor (HS).Relative humidity
		set point is available only on units configured for dehumidification. When the
		mode is activated, the control probe LED flashes on and off every second to alert
		the user. If not configured, the mode is permanently deactivated and Cd33 will
	Dehumidification	display “----------.” When set point is available, it can be set to “OFF.” “TEST,” or 65
Cd33	Control (% RH)	to 95% relative humidity in increments of 1%. If bulb mode is active (code Cd35)
	(Optional)	and “Lo” speed evaporator motors are selected (code Cd36) then set point
		ranges from 60 to 95%. When “TEST” is selected or test set point is entered, the
		heaters should be turned on, indicating that dehumidification mode is activated.
		After a period of five minutes has elapsed in this mode, the previously selected
		mode is reinstated.
	Economy Mode	Economy mode is a user selectable mode of operation provided for power saving
Cd34		purposes. Refer to sections 3.1.7.1 and 3.1.7.2 for a more detailed description of
	(On--Off) (Optional)	economy mode.
		Bulb mode is a user selectable mode of operation that is an extension of normal
	Bulb Mode	dehumidification. If dehumidification is set to “Off,” code Cd35 will display “Nor”
		and the user will be unable to change it. After a dehumidification set point has
Cd35	(Normal--Bulb)
		been selected and entered for code Cd33, the user may then change code Cd35
	(Optional)
		to “bulb.” After bulb has been selected and entered, the user may then utilize
		function codes Cd36 and Cd37 to make the desired changes.
		This code is enabled only if a dehumidification set point has been selected using
		function code Cd33 and “bulb” has been selected using function code Cd35. If
	Evaporator Speed	these conditions are not met, “alt” will be displayed indicating that the evaporator
		fans will alternate their speed whenever a dehumidification set point is selected.
	Select
Cd36		This display cannot be changed by the user. If a dehumidification set point has
	(Cd35 must be in	been selected along with bulb mode then “alt” may be selected for alternating
	“Bulb”)		3
		speed, “Lo” for low speed evaporator fan only, or “Hi” for high speed evaporator
			SECTION
		fan only. If a setting other than “alt” has been selected and bulb mode is
		deactivated in any manner, then selection reverts back to “alt.”
		This code, as with function code Cd36, is used in conjunction with bulb mode and
		dehumidification. If bulb mode is active, this code allows the user to change the
	Defrost Temperature	temperature above which the defrost termination sensor (DTS) temperature must
Cd37		go to terminate defrost. It allows the user to change the setting from 4_C to
	Sensor Setting	25.6_C in 0.1_C (0.2_F) increments. This value is changed using the UP/DOWN
	(Optional)
		ARROW keys, followed by the ENTER key when the desired value is displayed. If
		bulb mode is deactivated in any manner, the DTS setting above which defrost
		terminates defaults to the normal 25.6_C (78_F) setting.
		NOTE
In the unlikely event that AL55 activates, Function Codes Cd38 and Cd39 will display SRS and RRS,
respectively.
		This code is only applicable to units without a DataCORDER that are configured
	Secondary Supply	to have four probes. If this is true, it will then display the current secondary supply
Cd38	Air Temperature	air temperature.If the unit is configured with a DataCORDER, the Controller
	(Optional)	function code Cd38 will display “----------.” and the display values for SRS will
		appear on the DataCORDER function code dC1.

3-9 T-268-07