USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
17
Display Functions
Please refer to the illustration on page 19 with reference to designations of the various LED
indicator lights on the front panel. Please note that for enhanced viewing the CAT 2000 features
a “dead-front” display panel, so only illuminated indicators will be visible to the user. All lights and
indicators are activated during power-on.
pH Feed Indicator (#1)
This green LED is illuminated whenever the pH chemical feeder is automatically or manually
activated.
pH Alarm Indicator (#2)
Illumination of this red indicator is accompanied by an audible alarm and indicates that pH is
outside of the safe operating range. Check that the pH chemical feeder is functioning properly and
that an adequate chemical supply is available.
pH Digital Display (#3)
The red digital numeric display of the pH channel normally indicates the current pH of the pool or
spa water (as calibrated) passing through the filtration system. Pressing the pH Setpoint Adjust-
ment Button until the red “SET” LED is illuminated causes the pH setpoint to be displayed.
pH Setpoint Adjustment Mode Indicator (#4)
This green LED is illuminated whenever the controller is in the pH setpoint adjustment mode.
Setpoint adjustment is allowed only when this LED is illuminated.
pH Calibrate Mode Indicator (#5)
This green LED is illuminated whenever the controller is in the pH calibration mode. Calibration of
the pH display is allowed only when this LED is illuminated.
pH Automatic Control Indicator (#6)
This green LED is illuminated when pH is under automated control.
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