Aqua Logic DS-4-WCMD Manuale di installazione e manutenzione - Pagina 5

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1. Electrical Hookup

CHILLER CONTROL PROGRAMMING

Step

Enunciator

F or C

S1 (Blinking)

DIF (Blinking)

C1 or H1

Liquid Crystal Display (LCD)

The LCD display provides a constant readout of the sensor temperature and indicates if the output relay is energized. When the S1

enunciator is constantly Illuminated during operation, the relay is energized. the display is also used in conjunction with the keypad to

allow the user to adjust the set point temperature, differential and heating /cooling modes.

Programming Steps and Display

The control can be programmed in four simple steps using the LCD display and the three keys on the face of the control. (See photo

for display and keys.)

To start programming, press the SET key once to access the Fahrenheit/Celsius mode. The display will show the current status,

either F for degrees Fahrenheit or C for degrees Celsius. Then press either the up  arrow or down  arrow key to toggle between

the F or C designation.

Press the SET key again to access the set point temperature. The LCD will display the current set point temperature and the set

point enunciator will be blinking on and off to indicate that the control is in the set point mode. Then press either the up  key to

increase or down  key to decrease the set point to the desired temperature.

Press the SET key again to access the differential. The LCD will display the current differential and the DIF enunciator will be

blinking on and off to indicate that the control is in the differential mode. Then press either up  key to increase or the down  key

to decrease the differential to the desired setting (minimum 1°F, maximum 30°F).

Press the SET key again to access the heating mode. The LCD will display the current mode, C1 for chiller mode. Press the SET

key once more and programming is complete. Controller MUST in the C1 mode for correct operation.

Controller will automatically drop out of "program mode" and return to "operating mode" 30 seconds after last key press.

Troubleshooting Controller Error Messages:

Display Messages

•

E1 - Appears when the up  or down key is pressed when not in the programming mode.

To correct: If the E1 message appears even when no keys are being pressed, replace the control.

•

E2 - Appears if the control settings are not properly stored in memory.

To correct: Check all settings and correct if necessary.

•

EP - Appears when the probe and or flow switch is open , shorted or sensing a temperature that is out of range.

To correct: Check to see if the sensed temperature is out of range. If not , check for probe damage by comparing it to a known ambient

temperature between -30°F and 220°F. Replace the probe is necessary. Also check for proper water flow through heater. If water flow is correct,

flow switch.

•

EE - Appears if the EEPROM data has been corrupted.

To correct: This condition cannot be field repaired. Replace the control.

•

CL - Appears if calibration mode has been entered.

To correct: Remove power to the control for least five seconds. Reapply power. If the CL message still appears, replace the control

Description

Fahrenheit or Celsius

Setpoint Temperature

Differential Temperature

Cooling or Heating Mode

Display

DIF