
SeaMach 24 VDC
Rooftop Air Conditioners
SeaMach 24 VDC Rooftop Air Conditioner Installation Manual 5/2013 Page 16 of 20
Operating the Fan:
Fan speed may be set for automatic (temperature dependent) or manual control. Press the fan operating
symbol in the bottom right corner to change speeds. Manually selected fan speed is indicated with the M
showing before the fan speed indicator. When the fan is automatically controlled, the M is not present. The
fan may be controlled in the cool, heat, automatic modes as well as in the off state.
Manual fan speed operation is not available when the compressor is not running if the “Cycled Fan”
option is set. Turn the unit off in this case and then manual fan operation may be used. Manual fan speed
operation is also not available in moisture mode.
System Status Screen
System Current
Motor Current
System Voltage
Motor
Temperature
Motor Speed
Several system operating parameters can be viewed during operation as shown above. Press and hold the
lower center of the display (where the fan speed indicator is located) to view this status. To exit the status
view, press anywhere on the display.
The system current is available at all times, the remaining items only during compressor operation.
Failure Messages:
The following fault messages will be shown on the display in the event of a failure:
AIR SENSOR TROUBLE: Failure of the display mounted air sensor.
MASTERFLUX GENERATED ERRORS: Errors generated by the Masterux controller will also show
on the display. The exact text of these errors is dependent on the connected controller. See the operating
manual for your Masterux controller for details and resolution of these errors.
Programmable Parameters
Program Mode:
To enter the program mode rst put the unit in the off mode. Then press and hold the On/Off symbol for 3
seconds. Press the right arrow to advance to the next parameter and press the left arrow to go back to the
last parameter. Press the up or down arrows to change the parameters value. Exit the program mode when
nished by pressing the X or wait 60 seconds for the display to exit.
Manual 9000