FXII Chiller Revision: 05 March 25, 2013 7
Program Parameters:
There are eleven programmable parameters with their factory defaults described
in this section. The table below defines the parameter descriptions along with the
permitted values and default settings.
To enter the program mode first put the unit in the off state. Press and hold the
joystick in the center for 3 seconds. Use the fan button to advance to the next parameter
and the mode button to go back to the last parameter. Use the up and down buttons to
change the parameters value. Exit the program mode when finished by pressing and
releasing the On/Off button or wait 60 seconds for the display to exit. Note: program
mode can also be entered by pressing the following sequence of buttons: Mode, Up,
Down, Mode in the off mode.
Description Default Value
Display brightness 15 4=Minimum 15=Maximum
Screen Saver Brightness
4 0=Minimum 8=Maximum
Staging Delay 15 or 45* 5-135 Seconds
Current Limit 35 0-35 Amps (0 is disabled)
Low AC Line Detection Off 75-100 or 175-200 VAC
High Limit Threshold 130 100-135°F
System Units °F °F or °C
Cycle Sea Pump Cycled Sea Pump Cycled or Continuous
Reverse Cycle Heat Reverse Cycle Heat
Electric Heat or Reverse Cycle Heat
Purge Air in System No Yes or No
Starter Present No Yes or No
Reset Parameters No No or Yes
If JP8 is removed, Staging Delay default will be 45 seconds.
Parameter description:
o Display brightness: Display brightness can be set from 4 (dim) to
15 (bright) to suit room lighting. Brightness will change as the
number is changed.
o Screen saver brightness: Number values from 0 (dim) to 8
(bright) can be set to suit room brightness. The unit will operate as
described in the screen saver section.
o Staging delay: The compressor staging delay is provided for
multi system installations where more than one system is operating
from the same power source. Set the Staging delays at different
intervals so only one compressor starts at a time when power is
applied.
o Current limit: The system current limit can be set from 0 to 35
Amps maximum running current. Systems may start at higher
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