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If the temperature remains on while in the house, then it is likely a 

distance/resistance 

issue.  

 

Move the outdoor sensor to different locations outside to find a location where the 
temperature reading will hold. 

 

Outdoor Temperature is stuck or HH.H, LL.L 

 

Explanation: 

These symbols are error messages indicating the outdoor sensor is outside of its 

readable range. 
 

 

Check 

Batteries.

 Overpowered or underpowered batteries can cause this reading. 

 

Replace the outdoor sensor.

 

Note: 

The last outdoor reading may remain (not change) for several hours when the connection is 

lost. The outdoor temperature reading will flash when the connection is first lost or intermittent.  
 

Outdoor sensor drains batteries quickly 

 

 

Test a new set of alkaline batteries. Write down the date of installation and the voltage of 
the batteries. 

 

When the batteries fail, please note the date and voltage again.  

 

Check the 

distance

 and 

resistance

 between the outdoor sensor and the weather station. 

Outdoor sensors at the end of the range may work while batteries are fresh but not after 
they drain a bit. 

 

Check for leaking batteries, which may damage the outdoor sensor. 

 

Battery life is over 24 months when using reputable battery brands for both Alkaline and 
Lithium batteries. 

 

Outdoor Humidity goes to dashes when the temperature is cold. 

 

 

The outdoor temperature/humidity sensor designed to work with this weather station will 
drop the outdoor humidity and dew point reading in cold temperatures.  

 

The humidity and dew point will return when the temperature rises. This is how the sensor 
came from the factory. The temperature itself will continue to read. 

 

The outdoor sensor fell. The sensor no longer works 

 

Explanation:

 If there is no physical damage to the outdoor sensor, the fall may not have caused 

internal damage. A fall can shock the outdoor sensor or the batteries in the outdoor sensor. 
Batteries that have fallen on a hard surface may be damaged and unable to function properly. 
 

 

Complete a 

Restart

 with fresh batteries. 

 

Us

Batteries 

dated at least six years in advance of the current year. Batteries dated earlier 

than six years from now may still work but may be unstable in performance. 

Note: 

A outdoor sensor that has fallen into a puddle, snow, or other standing water, will likely have 

water damage and need to be replaced. Outdoor sensors are water resistant, not waterproof. 
 

Replacement Outdoor sensors 

 

 

Visit your local Retailer or La Crosse Technology® Store 

http://store.lacrossetechnology.com/

  

 

Note

: Be sure to order the correct model and frequency to avoid receiving the incorrect item.  

Summary of Contents for W85777

Page 1: ...g 4 Intermittent Outdoor Temperature 4 Outdoor Temperature is stuck or HH H LL L 5 Outdoor sensor drains batteries quickly 5 Outdoor Humidity goes to dashes when the temperature is cold 5 The outdoor...

Page 2: ...echnology has improved and batteries will maintain voltage longer in storage However the environment the batteries reside in for 10 years can deplete the power Use Alkaline or Lithium batteries in the...

Page 3: ...eries This is not the same as a thorough factory reset 1 Bring the outdoor sensor and weather station together inside and place the units 5 10 feet apart with nothing between them 2 Hold the TEMP butt...

Page 4: ...e outdoor sensor right next to the weather station for 2 hours Compare indoor and outdoor temperatures The temperatures should be within 4 degrees to be within tolerance If the outdoor sensor reads co...

Page 5: ...s over 24 months when using reputable battery brands for both Alkaline and Lithium batteries Outdoor Humidity goes to dashes when the temperature is cold The outdoor temperature humidity sensor design...

Page 6: ...in humidity since 8 00 At 11 30 the trend arrows will reflect changes in humidity since 8 30 etc Up Arrow The temperature has risen in the past 3 hours The humidity has risen in the past 3 hours Right...

Page 7: ...greenhouse basement etc Press and release the PLUS button to view channels 1 2 or 3 on the display when multiple transmitters are used Note You cannot change channels if only one transmitter is connec...

Page 8: ...r is over 300 feet 91 meters Obstacles such as walls windows stucco concrete and large metal objects can reduce the range Do not mount near electrical wires transmitting antennas or other items that w...

Page 9: ...the outdoor sensor on a metal fence This significantly reduces the effective range Interference Consider items in the signal path between the outdoor sensor and the weather station Sometimes a simple...

Page 10: ...Weather Station Power Requirements This weather station is powered by a 5 volt AC power adapter Alternatively optional 3 AAA alkaline batteries may be used 12 Hour or 24 Hour time format Time can dis...

Page 11: ...nerally a power related issue Check that the AC power cord is inserted into a working outlet Batteries may be overpowered or underpowered Remove batteries from the weather station Press any button 20...

Page 12: ...S buttons 1 Hold the TIME SET button for five seconds BEEP and the word ON will show Press and release the PLUS and MINUS buttons to turn this to of the beep when a button is pressed Confirm with the...

Page 13: ...humidity is at a comfortable or uncomfortable level The bar over the chart will move and change colors to indicate the humidity level Forecast Icons Inaccurate THIS WEATHER STATION LEARNS OVER TIME Pl...

Page 14: ...h AC adapter only to determine if batteries were an issue The weather station has missing segments Explanation When parts of numbers letters or pictures are missing on the display it is often power re...

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