Carrier 69NT40-561-399 Operation And Service Manual page 65

CODE # TITLE
Cd41 Valve Override
For Units configured for eAutoFresh Cd43 and Cd44 using the following:
Configurable Functions - Cd43 is a user-selectable function. The operator can change the value of this function
Cd43 eAutoFresh Mode
Cd44 eAutoFresh Values / CO
Sensor Status
For Units configured for XtendFRESH Cd43 and Cd44 using the following:
Configurable Functions - Cd43 is a user-selectable function. The operator can change the value of this function
Table 4–3 Controller Function Codes (Continued)
DESCRIPTION
SERVICE FUNCTION: This code is used for troubleshooting, and al-
lows manual positioning of the economizer solenoid valve, electronic
expansion valve, and digital unloader valve. Provides readings such
as: Percent Capacity, EEV, Capacity Mode, LIV and DUV. Refer to
paragraph 6.21 for operating instructions.
to meet the operational needs of the container.
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 CO
able limits (LM). This selection is only active if the unit has a CO
TEST / CAL (CO
and close to allow the user to inspect its operation. If CAL is selected,
the controller will zero calibrate the CO
If the unit is not configured with AutoFresh, the Cd43 will display "----"
Refer to Section 5.4.3
Display Only Function - Cd44 is a display only function.
Code Cd44 displays the eAutoFresh CO
2
and CO
2
This function code will be dashed out if not configured for eAutoFresh.
This function code will be dashed if CO
sensor is not expected (didn't have one previously).
This function code will display "ChECK" if a CO
auto-detected at the most recent power-up and was detected at a pre-
vious power-up. If "ChECK" is displayed and the ENTER key is
pressed, "SEnSr" is displayed with the choices of "YES" and "no":
"YES" – sensor should be remembered as detected (present)
"no" – sensor should not be remembered as being detected (not present)
to meet the operational needs of the container.
sensor option units only) - The door will fully open
2
for description of operational parameters.
and O2 limits (CO LIM and O
2
4–31
and O select-
2 2
sensor.
2
sensor input.
2
and O values (CO and O
2 2 2
LIM), respectively.
2
sensor is not detected, and a
2
sensor has not been
2
)
2
T-365