Carrier PrimeLINE Operation And Service Manual page 52

Code Description
Cd48 Dehumidification / Bulb Cargo Mode Parameter Selection
Initially Cd48 will display current Dehumidification Mode: bUlb (bulb cargo mode), dEhUM (normal
dehumidification), or OFF.
Pressing ENTER key will take the interface down into a hierarchy of parameter selection menus (mode,
setpoint, evaporator speed, DTT setting). Pressing ENTER key in any parameter selection menu commits
to selection of the currently displayed parameter and causes the interface to descend into the next
parameter selection menu. All parameter selection menus alternate between a blank display and the
current selection in the right hand display.
Available parameters and parameter ranges are a function of configuration options and previously
selected parameters as indicated above.
Whenever any pre-trip test is initiated, Dehumidification Mode goes to OFF.
Whenever Dehumidification Mode goes to OFF:
• Dehumidification control setpoint goes to 0% RH internally but will then initialize to 95% RH when
Dehumidification Mode leaves OFF.
• Evaporator speed select goes to Alt for units without PWM Compressor Control (Cnf57 = Out),
Evaporator speed select goes to Hi for units with PWM Compressor Control (Cnf57 = In).
• DTT setting goes to 25.6°C or 18.0°C, depending on Cnf41.
Whenever Dehumidification Mode is set to bUlb, DTT setting goes to 18.0°C if it had been set higher.
Whenever Dehumidification Mode is set to dEhUM, DTT setting goes to 25.6°C or 18.0°C, depending on
Cnf41.
For units without PWM Compressor Control (Cnf57 = Out):
• Whenever dehumidification control setpoint is set below 65% RH evaporator speed select goes to LO
if it had been set to Hi.
• Whenever dehumidification control setpoint is set above 64% RH evaporator speed select goes to Alt
if it had been set to LO.
For units with PWM Compressor Control (Cnf57 = In):
• Whenever dehumidification control setpoint is set below 60% RH, the evaporator fan speed is set to
LO, the user has the ability to set the evaporator fan speed to Hi via the keypad.
Whenever dehumidification control setpoint is set equal to or above 60% RH, the evaporator fan speed
is set to Hi, the user has the ability to set the evaporator fan speed to LO via the keypad.
Display Only Function - Cd49 is a display only function.
Cd49 Days Since Last Successful Pre-Trip
Cd49 displays the number of days since last successful pre-trip sequence.
Press ENTER to view the number of days since the last successful pre-trip for AUTO1, AUTO2, and
AUTO3 in sequence.
Press CODE SELECT to step back through the list and ultimately to exit the Cd49 display.
Configurable Functions - Cd50 through Cd53 are user-selectable functions. The operator can change the value
of these functions to meet the operational needs of the container.
T-362
Table 4–4 Controller Function Codes
4–12