Changing the Setpoint
From the Standard Display, press the UP ARROW Key and/or DOWN ARROW Key until the desired setpoint is shown. In the figure shown ( UP ARROW Key), the setpoint has been increased to 40°F (4.4°C) using the UP ARROW Key.
When the desired setpoint has been selected using the UP ARROW Key or DOWN ARROW Key, the ENTER Key must be pressed to confirm and load the new setpoint.
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If the setpoint is changed using the UP ARROW Key and DOWN ARROW Key, the setpoint display will begin to flash 10 seconds after the last press of the UP ARROW or DOWN ARROW key as a reminder to press the ENTER Key.
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The setpoint display will flash for 10 additional seconds. If at the end of this time the ENTER Key still has not been pressed to complete the setpoint change, the setpoint will return to the old setpoint and Alarm Code 127 Setpoint Not Entered will be set. The Alarm Icon will appear in the display.
The new setpoint of 40°F (4.4°C) will remain on the display after the ENTER Key has been pressed.
Failure to confirm the new setpoint by pressing the ENTER Key within 20 seconds of changing the setpoint will result in no setpoint change. In addition, Alarm Code 127 Setpoint Not Entered is set, to indicate that the setpoint change was started but was not completed.
Notice that the setpoint has returned to the old setpoint of 35°F (1.6°C) and the Alarm Icon has lighted indicating that Alarm Code 127 Setpoint Not Entered is set.
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If the ENTER Key is pressed, the setpoint change made with the UP ARROW Key and/or DOWN ARROW Key is accepted, the setpoint is changed, and the display returns to the Standard Display showing the new setpoint.
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If the ENTER Key is not pressed within 20 seconds of making a change with the UP ARROW Key and/or DOWN ARROW Key, the setpoint is not changed and the display returns to the Setpoint Display showing the old setpoint. Alarm Code 127 Setpoint Not Entered is set and the Alarm Icon will appear on the display, to indicate that the setpoint change was started but not completed.