Programming the Control
CONTROL SETTINGS REQUIRED upon installation and after an extended power outage.
NOTES:
■WHEN THE TRANSFORMER IS PLUGGED INTO THE ELECTRICAL OUTLET, 12:00 PM (flashing), and PRESENT TIME is displayed. Program the control as instructed below.
■If 
- - - is flashing, use the UP 
button to set the correct model code as follows: SR22 for GXSF27E. If you
pass by the correct code number, use the DOWN 
button. Then press the MODE button to accept the correct model.
■A “beep” sounds while pressing buttons for control programming. One beep signals a change in the control display. Repeated beeps mean the control will not accept
a change from the button you have pressed, and you should select another button.
■To program the control, you will use the UP 
, DOWN 
and MODE buttons.
■Use the MODE button to select the desired control function.
SET PRESENT TIME OF DAY
1. Press the MODE button until PRESENT TIME appears in the display.
2.Press UP 
or DOWN 
button to set.
The UP button advances the time; the
DOWN button moves the time in reverse.
2.If the present time is between noon and midnight, be sure PM shows in the display. If the present time is between midnight and noon, be sure AM shows in the display.
NOTE: Each press of an UP 
or DOWN 
button changes the time by one minute. Holding the button changes the time at a rapid rate.
3.When the present time is correct, press MODE to accept.
SET WATER HARDNESS NUMBER
1. Press the MODE button until HARDNESS appears in the display.
2.Press UP 
or DOWN 
button to set your water hardness number in the display. DOWN decreases the hardness value. UP increases the hardness value.
NOTE: Each press of a button changes the display by 1, between 1 and 25. Above 25, the display changes 5 at a time (25, 30, 35, etc.). Holding a button in changes the numbers at a rapid rate.
3.When the display shows your water hardness (in grains per gallon), press MODE to accept.
NOTE: If there is clear water iron in your water supply, you will need to increase the hardness setting by 5 for each 1 ppm of clear water iron in your water supply.
You can get the grains per gallon (gpg) hardness of your water supply from a water analysis laboratory. If you are on a municipal supply, call your local water department. Or call Legend Technical Services, an independent laboratory, to request a water hardness test kit at 1.800.826.8553, extension
47.If your report shows hardness in parts per million (ppm) or milligrams per liter (mg/l), simply divide by 17.1 to get the equivalent number of grains per gallon.
SET RECHARGE (STARTING) TIME
1. Press the MODE button until RECHARGE TIME appears in the display.
NOTE: A flashing 2:00 AM (factory default)
should show in the display. This is a good time for recharge
to start (takes about 2 hours) in most households because water is not in use. HARD WATER is bypassed to house faucets during recharge.
If no change is needed, go to step 3. To change the recharge starting time, follow step 2.
2.Press UP 
or DOWN 
button to set the desired recharge start time. Be sure to observe the AM or PM as you did when setting the time of day.
NOTE: Each press of a button changes the time by 1 hour. Holding the buttons in changes the time at a rapid rate.
3.Press the MODE button to accept.
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