Carrier 69NT40-541-001 Operation And Service page 58

CODE # TITLE
Defrost Termination
Cd37 Temperature Setting
(Bulb Mode)
Secondary Supply
Cd38
Temperature Sensor
Secondary Return
Cd39
Temperature Sensor
Container
Cd40 Identification
Number
Cd41
Not Applicable
Cd42
Cd43 AutoFresh Mode
Cd44 AutoFresh Values
Vent Position
Cd45
Sensor (VPS)
Cd46 Not Used
Variable Economy
Cd47
Temperature Setting
Cd48 Dehumidification/
Bulb Mode
Parameter Selection
Cd49 Days Since Last
Successful Pre-Trip
T-316
Table 4–5 Controller Function Codes (Continued)
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 termination thermostat settings. If bulb mode is deactivated, the DTS
set ting returns to the default.
Code Cd38 will display the current secondary supply temperature sensor read-
ing for units configured for four probes. If the unit is configured with a Data-
CORDER, Cd38 will display "-----." If the DataCORDER suffers a failure, (AL55)
Cd38 will display the supply recorder sensor reading.
Code Cd39 will display the current secondary return temperature sensor reading
for units configured for four probes. If the unit is configured with a DataCORDER,
Cd39 will display "-----." If the DataCORDER suffers a failure, (AL55) Cd39 will
display the return recorder sensor reading.
Code Cd40 is configured at commissioning to read a valid container identifica-
tion number. The reading will not display alpha characters, only the numeric por-
tion of the number will display.
Code Cd43 is a user selectable mode of operation that allows the opening and
closing of a mechanical air vent door via a stepper motor. These selection
modes are as follows:
OFF - Air makeup vent will remain closed.
User - Allows for manual selection of the setting.
Delay -The opening of the door is based on selected time, return temperature
and flow rate (percent opened).
gASLM - The opening is based percent open and CO2 and O2 selectable limits
(LM). This selection is only active if the unit has a CO2 sensor.
TEST / CAL (CO2 sensor option units only) - The door will fully open and close
to allow the user to inspect its operation. If CAL is selected the
controller will zero calibrate the CO2 sensor input.
If the unit is not configured with AutoFresh the CD43 will display "----".
Code Cd44 will display CO2 and O2 concentrations and limits. If the unit is not
configured for AutoFresh or a CO2 sensor is not installed, CD44 will display"----"
Code Cd45 will display whenever the control detects movement via the sensor
unless alarm 50 is active. The code shall be displayed for 30 seconds, then time
out and return to the normal display mode. If the Temperature unit is °F, the VPS
units shall be CFM and in °C the VPS units shall be CMH.
The variable temperature "°C or °F" setting is used with optional economy mode.
Function code is "----" when unit is not configured for economy mode.
Code CD48 is used to determine limits (between 60%-95%) for dehumidification
and/or bulb mode (CNF28) when active.
Code CD49 will display the number of days since the last successful Auto1,
Auto2, or Auto3 pre-trip sequence.
4–22
DESCRIPTION
Scroll Units Only
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