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UGH004/0999 microKool Portable Chillers
OPERATION 4-5
PC-1 and PC-2 controls have a security feature that prevents
accidental or unauthorized changes to the setpoint tempera-
ture, high and low deviation limits, SPI address, and baud rate.
If passcode protection is enabled, you must enter the correct
passcode to change these parameters. To enter the passcode:
Press and hold the Setpoint Select button
for 5 seconds.
The control will display 1 PaS to indi-
cate a passcode is needed.
Press the Select ▲ button until the correct
passcode appears in the display.
Press again to enter the passcode.
If the passcode is correct, the control displays ACC PAS
for 3 seconds. If the passcode is incorrect, the control dis-
plays rEJ PAS (rejected passcode).
Press Setpoint to select the parameter you
want to change.
You will have access to the system parameters until:
● The power is cycled off and on.
● The RUN or STOP button is pressed.
● No key has been pressed for 30 seconds.
NOTE: Pressing the STOP or RUN key while you are
entering a passcode will abort the passcode entry
sequence
ENTERING A
PASSCODE
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