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M78786 FAQS ........................................................................................................ 1
Batteries ................................................................................................................ 1
Digital Clock Factory Restart ................................................................................ 2
Display Indoor Temperature or Seconds .................................................................. 2
Fahrenheit/Celsius .................................................................................................... 2
12-Hour Time Format ............................................................................................. 2
Supported Time Zones ........................................................................................... 2
Dashes, HHH, LLL or Stuck Indoor Temperature ...................................................... 2
Does the clock have a backlight? ............................................................................ 3
Time is off by hours ............................................................................................... 3
Daylight Saving Time ............................................................................................. 3
Manually Set Time/Date: Program Menu.................................................................. 3
No WWVB Tower Icon ............................................................................................ 5
Set Time Alarm ...................................................................................................... 5
Activate/Deactivate Time Alarm .............................................................................. 5
Snooze Alarm ........................................................................................................ 5
Indoor Comfort Statement ...................................................................................... 5
Digital clock has distorted or frozen display ............................................................. 5
Digital clock is blank: No letters, numbers or dashed lines ........................................ 6
Day of the week is incorrect. .................................................................................. 6
Digital clock drains batteries quickly ........................................................................ 6
Digital clock has missing segments.......................................................................... 6
Batteries
Explanation: Many problems are resolved with fresh batteries of the appropriate
voltage. Many items sent in under warranty work, when tested with fresh batteries.
Batteries manufactured this year will have an expiration date 10 years (or more) in the
future. Battery technology has improved and batteries will maintain voltage longer in
La Crosse Technology, Ltd
M78786 FAQS
CONTENTS
Page 1

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Summary of Contents for La Crose M78786

  • Page 1 The links below will work in most PDF viewers and link to the topic area by clicking the link. We recommend Adobe Reader version 10 or greater available at: http://get.adobe.com/reader CONTENTS M78786 FAQS ......................1 Batteries ........................ 1 Digital Clock Factory Restart ................2 Display Indoor Temperature or Seconds ..............2 Fahrenheit/Celsius ....................
  • Page 2 storage. However, the environment the batteries reside in for the 10 years can deplete the power.  We suggest name brand Alkaline batteries for indoor displays.  A minimum voltage of 1.48V for each battery is necessary for proper performance. ...
  • Page 3 Explanation: These symbols are error messages indication the indoor sensor is outside of its readable range. For indoor readings, this is generally a power related issue.  This is generally a power related issue. Batteries may be overpowered or underpowered. Remove batteries from atomic ...
  • Page 4 There are seven function buttons: MODE, + (PLUS), - (MINUS), ALARM and SNOOZE. Time set order: 1. Beep ON/OFF 2. WWVB ON/OFF 4. Time Zone 3. DST ON/OFF (Daylight Saving Indicator) 5. 12/24 hour time format 6. Hour 7. Minutes 8.
  • Page 5 No WWVB Tower Icon  The digital clock has not received a WWVB time signal in the past 24 hours. Position the digital clock for better reception.   Press and release the PLUS button to send the digital clock on a WWVB signal search at night.
  • Page 6  With all power removed, the digital clock should be blank.  If numbers still appear, please check for scratch guard. Power:  Check that the batteries are installed correctly.  This is generally a power related issue. Batteries may be overpowered or underpowered. ...