Ice Alarm - La Crosse Technology KCombo3 WS-9080U-IT WS-9640U-IT Manual

RESETTING THE INDOOR AND OUTDOOR MINIMUM AND MAXIMUM RECORDS
1. In normal display mode, press the MIN/ MAX button to advance to the MIN/MAX
records display.
2. Press and hold the MIN/MAX key for about 2 seconds, this will reset all the indoor
and outdoor MIN and MAX temperature records to the current temperature and time.
Note:
The indoor and outdoor records will be reset at the same time.
Ice Alarm (ALARM AT 4°C)
This Weather Station has a unique Ice Alarm feature. User may choose to turn it On or Off.
User may press the Ice Alarm key to activate the alarm (the Ice Alarm icon will then be
displayed to indicate that the alarm is "on"). After the alarm is switched on, and the
measured outdoor temperature has dropped below 39.2°F, the Ice Alarm will be triggered.
The alarm will then sound and the Ice Alarm icon will be blinking on the LCD. The alarm
duration will be about 1.5 minutes.
HYSTERESIS OF Ice Alarm
To compensate for the fluctuation of the measured outdoor temperature, which may cause
the Ice Alarm to sound constantly if the measured reading is close to 39.2°F, a hysteresis
function has been implemented for the alarm.
If the current value drops to 39.2°F, the alarm will be activated (if it has been enabled).
Then when the temperature rises to 40.3°F and thereafter again drops to below 39.2°F, the
data will be blinking, but no alarm will be activated. With the pre-set hysteresis of 33.8°F, it
has to rise back to above 41°F and drop below 39.2°F to trigger the alarm again.
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