La Crosse Technology S74870 User Manual

La Crosse Technology, Ltd Page 1
S74870 FAQS
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CONTENTS
S74870 FAQS ................................................................................................................................ 1
Batteries ...................................................................................................................................... 2
Button Functions-Quick Look ............................................................................................................ 2
Outdoor Temperature Sensor ........................................................................................................... 3
Power Requirements .................................................................................................................... 3
Quick Connect ............................................................................................................................ 3
Atomic Clock Factory Restart ............................................................................................................ 4
Outdoor Sensor reads “NO” ............................................................................................................ 4
Other steps to take: .................................................................................................................... 4
Inaccurate Outdoor Temperature Reading .......................................................................................... 4
Intermittent Outdoor Temperature .................................................................................................... 5
Outdoor Temperature shows HH.H, LL.L ............................................................................................ 5
Outdoor sensor drains batteries quickly. ............................................................................................ 5
Outdoor sensor fell. The sensor no longer works. ................................................................................. 6
HI | LO Temperature readings ......................................................................................................... 6
Mounting/Positioning Outdoor sensor ................................................................................................ 6
Fahrenheit/Celsius ........................................................................................................................... 7
12-Hour Time Format .................................................................................................................... 7
Does the clock have a backlight? ..................................................................................................... 7
Supported Time Zones .................................................................................................................. 7
Dashes, HHH, LLL or Stuck Indoor Temperature ................................................................................... 7
Time is off by hours ...................................................................................................................... 7
Daylight Saving Time .................................................................................................................... 8
Manually Set Time/Date: Program Menu ............................................................................................. 8
No WWVB Tower Icon ................................................................................................................... 9
Set Time Alarm ............................................................................................................................ 9
Activate/Deactivate Time Alarm ....................................................................................................... 9
Snooze Alarm ............................................................................................................................10
Customizable display: Calendar or Moon Phase ..................................................................................10
Atomic clock has distorted or frozen display. ......................................................................................10
Atomic clock is blank: No letters, numbers or dashed lines ....................................................................10
Day of the week is incorrect. ..........................................................................................................10

La Crosse Technology S74870 Specifications

General

Display	LCD
Temperature Sensor	Yes
Humidity Sensor	Yes
Backlight	Yes
Snooze	Yes
Indoor Temperature Range	32°F to 122°F (0°C to 50°C)
Outdoor Temperature Range	-40°F to 140°F (-40°C to 60°C)
Color	Black
Power Source	Battery
Time Display	12/24-hour format
Temperature	Yes
Time Sync	Atomic
Weight	1.1 pounds (0.5 kg)

Summary

Batteries and Power Management

Battery Recommendations

Suggests name brand alkaline batteries, minimum 1.48V, and recent expiration dates for optimal performance.

Outdoor Sensor Battery Life

Discusses rapid battery depletion in the outdoor sensor and troubleshooting steps.

Atomic Clock Power Issues

Troubleshoots distorted, blank, or missing segments on the atomic clock display due to power.

Outdoor Sensor Setup and Troubleshooting

Outdoor Sensor Compatibility

Confirms compatibility of TX141-B outdoor sensors with the atomic clock.

Quick Connect Procedure

Details a quick connection method for the clock and outdoor sensor lost due to interference or low batteries.

Troubleshooting 'NO' Sensor Reading

Explains why the clock might show 'NO' for the outdoor sensor and provides steps to resolve it.

Inaccurate Outdoor Temperature Readings

Discusses causes and solutions for inaccurate outdoor temperature readings, often related to placement.

Atomic Clock Time and Settings

Time Synchronization Issues

Addresses problems with the clock time being off by hours and WWVB signal reception.

Manual Time and Date Setting

Provides a step-by-step guide to manually set the clock's time, date, and other program settings.

Daylight Saving Time Management

Explains DST settings and how they affect the clock's timekeeping.

Alarm Functionality

Instructions on setting, activating, deactivating, and snoozing the atomic clock alarm.

Display and Functionality Problems

Frozen or Distorted Display

Troubleshooting steps for a distorted or frozen atomic clock display, including checking for protective film.

Blank or Missing Display Segments

Resolves issues where the atomic clock display is blank or has missing segments, often power-related.

Incorrect Day of the Week

Explains how the day of the week is set and troubleshooting for incorrect display.