Marine Air Systems vector compact - Passport II Control; Modes of Operation

PASSPORT II CONTROL
POWER BUTTON: Press and release to turn unit on and off.
NOTE: To "press and release" a button, press and hold for one second and then release.
FAN BUTTON: Press and hold until the letter "A" appears for automatic fan speed or the numbers
"1" (slow) through "6" (fast) appear for manual fan speed. Fan may be used while a/c is off.
UP & DOWN BUTTONS: Press and hold either button until desired temperature (set point) is
displayed. Press either button momentarily to show current set point. Range = 60°-85°F.
COOL LED: Lights when the compressor is running in cool mode or in automatic mode while
cooling.
FAN LED: Lights when fan is on in manual mode.
HEAT LED: Lights when the compressor is running in heat mode, in automatic mode while heating or
if optional electric heat is installed and operating.
DISPLAY WINDOW: Shows current cabin temperature. It can also show outside air temperature if
the optional O.A.T. sensor is installed. Also used in viewing and setting program parameters.
AIR SENSOR: Cabin temperature is detected by the face plate air sensor, located in the bottom edge
of the display. A remote air sensor can be installed if needed. Installing the remote air sensor will
override the face plate sensor.
BLANK DISPLAY FOR NIGHTTIME OPERATION: Press the FAN and DOWN buttons
simultaneously to blank the display for nighttime operation. The appropriate LEDs will remain lit
during cooling and heating. When the desired temperature has been achieved, the middle segment of
the display window will remain lit to indicate that the system is on. Press any button to return to
normal display mode.
OUTSIDE AIR TEMPERATURE: When the optional outside air sensor is installed, press the UP and
DOWN buttons simultaneously to display the outside air temperature. The outside air sensor should
not be mounted in direct sunlight.
MODES OF OPERATION
COOL ONLY MODE: When the Passport II is configured for cool only mode, only cooling systems
will be operated as required. When the temperature drops below the set point the system will not
automatically switch into the heating mode.
HEAT ONLY MODE: When the controller is programmed for heating mode, only the heating system
will be selected for operation as required. Should the temperature rise above the set point the system
will not switch to the cooling mode automatically.
AUTOMATIC MODE: When the controller is configured for the automatic mode, both heating and
cooling will be supplied as required. The heat and cool LED indicators will light according to which
mode is operating. Temperature differential in a given mode will be maintained at 2°F, however, a 4°F
difference is required to allow the control to change modes.
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