INSTRUCTIONS
15
TEMPERATURE CALIBRATION
1. Set the desired temperature above the current temperature so that the compressor will not
operate during calibration.
2. In Display mode, press the /\ or \/ button for 5 seconds to select between Fahrenheit and Celsius
as the unit of measure of temperature.
3. Press and hold the /\ and \/ buttons at the same time for 5 seconds to enter into the Calibration
mode. The Current Temperature display will show zero and blink after the Calibration mode is
activated.
4. If Fahrenheit is selected, each time you press either the /\ or \/ button, the display will increase
or decrease one unit, which represents 0.1 degree Fahrenheit. For example, to calibrate the
temperature up 1 degree Fahrenheit, press the /\ button 10 times and the display changes from
zero to 10. To calibrate the temperature down 0.5 degree Fahrenheit, press the \/ button 5 times
and the display changes from zero to -5.
5. If Celsius is selected, each time you press either the /\ or \/ button, the display will increase or
decrease one unit, which represents 0.1 degree Celsius. For example, to calibrate the temperature
up 1 degree Celsius, press the /\ button 10 times and the display changes from zero to 10. To
calibrate the temperature down 0.5 degree Celsius, press the \/ button 5 times and the display
changes from zero to -5.
6. Press and hold the SET button again for 5 seconds (or wait for approximately 8 seconds) to
confirm the calibrated temperature and exit from the Calibration mode to the display mode. The
display will turn from blinking to solid.
7. The temperature calibration range is +/- 5 degrees Fahrenheit or +/- 1.5 degrees Celsius.
TEMPERATURE DEADBAND SETTING
1. To protect the compressor from the stress of frequently turning on and off, a temperature
deadband should be programmed. A temperature deadband is a temperature range above the
set desired temperature in which the unit will not operate until the water temperature reaches
the deadband upper limit. For example, if the desired temperate is set to 40 degrees Fahrenheit
and the deadband is 2 degrees Fahrenheit, the chiller will chill the water to 40 degrees and then
stop working and enter standby mode. The chiller remains in the standby mode until the water
temperature rises and reaches 42 degrees. The chiller then resumes operation to chill the water
down to 40 degrees and then again stop working and enter the standby mode.
2. The default deadband is 2 degrees in Fahrenheit or 1 degree in Celsius. If you would like to adjust
the deadband range, please follow the following steps.
3. In Display mode, press the /\ or \/ button for 5 seconds to select between Fahrenheit and Celsius
as the unit of measure of temperature.
4. Press and hold the SET button for 5 seconds to enter into the deadband adjustment mode. The
Current Temperature display will show the default deadband setting and will blink after the
deadband adjustment mode is activated.
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