Carrier Transicold 69NT40-561-001 Operation And Service Manual page 70

Code Title
Cd58 Water Pressure
Switch / Condenser
Fan Switch State or
Override Logic State
Configurable Functions - Cd59 through Cd70 are user-selectable functions. The operator can change the value
of these functions to meet the operational needs of the container.
Cd59 Pump Down Logic
Cd60 Evaporator Fan
Pulsing Temperature
Setting
Cd61 High Speed
Evaporator Fan
Setting
T-340
Table 4–5 Controller Function Codes
Description
Cd58 will display "CLOSE" if the WPS or CFS switch contacts are closed or if
these options are not installed. "OPEn" is displayed when the WPS or CFS
switch contacts are open. When the WPS/CFS Override Logic is "TRUE", the
right display will flash on all units.
1. This CLOSE/OPEn state displayed in this Code Select function only applies
to units that have the ability to detect the state of a WPS/CFS. This function
should not be relied upon to display the condition of the switch on units that don't
have a WPS/CFS switch connected to ECG2 exclusively.
2. The right display will flash if the WPS/CFS Override Logic is TRUE on all units.
This is always the case, whether the unit has a WPS or CFS installed or not.
3. The ability of the WPS/CFS Override Logic to control the condenser fan is lim-
ited. It is not possible for this logic to control the fan on units that have the WPS
or CFS wired in series with the fan contactor. Units wired in this configuration can
indicate that the WPS/CFS Override Logic is active by flashing the right display,
however, the wiring will not allow for control of the condenser fan.
Cd59 allows operation of the pump down logic control. The display will flash be-
tween "STArT PdN" and "PrESS EnTEr".
Upon entering Cd59 the operator will be required to acknowledge that they want
to initiate the pump down control. The display will flash between "STArT P dN"
and "PrESS EnTEr". Once the decision to continue is confirmed pump down log-
ic will begin, and will take complete control of the unit until pump down either suc-
ceeds or fails. This operation can not be halted once it begins without power
cycling the unit.
After pump down logic has been initiated, the operator will be notified to close
the Liquid Line Valve, the display will flash between "CLOSE LLV" and "PrESS
EnTEr". Once complete the display will read "P dN" to the left, and the current
suction pressure to the right.
If the automatic pump down logic succeeds within 20 minutes, the unit will turn
itself off, and the display will notify the operator that pump down is complete by
flashing between "P dN DOnE" and "SHUT OFF". The operator must then shut
off the unit.
If the automatic pump down logic does not complete within 20 minutes, the unit
will drop out of Cd59 and return to its previous control condition.
Cd60 contains a selectable temperature range used to determine the engage-
ment point of the Evaporator Fan Pulsing logic. Default setting is -18.1°C. The
user may change the temperature by pressing the ENTER key, then scrolling to
the desired temperature using either Arrow key. Press the ENTER key to accept
the change. The temperature setting will be retained until either a Pre-Trip or Trip
Start is initiated at which time the temperature will set to the default setting.
"-----" will be displayed if CnF68 is configured OUT
Cd61 is used to force evaporator fan speed to high while temperature control is
being performed in the perishable setpoint range. When set to "On", evaporator
fans operate in high speed regardless of any other active option that can control
evaporator fan speed.
Following a power cycle, the state of the function select code is retained at its
state prior to the power cycle. If "On", this function select code will be set to "OFF"
when any trip start occurs or any pretrip test is initiated.
"-----" will be displayed if setpoint in frozen range or if CnF66 is configured OFF.
4–34
NOTE: