FAQ
Table Of Contents
- WT-5220U-IT FAQS
- Batteries
- Clock Factory Restart
- Outdoor Temperature Transmitter
- Compatible Outdoor Transmitters
- Fahrenheit/Celsius
- Flashing Outdoor Temperature
- Dashes shown for Outdoor Temperature
- Inaccurate Outdoor Temperature Reading
- Intermittent Outdoor Temperature
- Outdoor Temperature Is Stuck or OFL
- Outdoor Transmitter Fell and No Longer Works
- Outdoor Transmitter Drains Batteries Quickly
- Mounting/Positioning Outdoor Transmitter
- Position Clock
- Distance/Resistance/Interference
- Projection Alarm Clock
- How tall are the Time Numbers?
- 12-Hour or 24-Hour Time Format
- Power Requirements
- Inaccurate Indoor Temperature Reading
- Set Time Alarm
- Activate/Deactivate Time Alarm
- Snooze Alarm
- Time is off by hours
- Daylight Saving Time
- Manually Set Time/Calendar/Alarm: Program Menu
- Display Modes
- Projection
- Change projection orientation
- Project temperature only
- Projected temperature is dashes
- Projection is dim
- Projection does not show
- Clock Has Missing Segments
- Clock Is Dim
- Clock Has Distorted Display
- Clocks Blank: No Letters, Numbers or Dashed Lines

La Crosse Technology, Ltd. Page 4
If the temperature remains on while in the house then it is likely a
distance/resistance
issue. Move the transmitter to different locations outside to
find a location where the temperature reading will hold.
Distance/Resistance can cause loss of transmitter signal.
Check Batteries.
Outdoor Temperature Is Stuck or OFL
The last outdoor reading may remain (not change) for several hours when
connection is lost.
The outdoor temperature reading will flash when the connection is first lost or
intermittent between the clock and the outdoor transmitter.
Check batteries.
Overpowered or underpowered batteries can cause this
reading.
Replace outdoor transmitter.
Outdoor Transmitter Fell and No Longer Works
If there is no physical damage to the outdoor transmitter, the fall may not have
caused internal damage.
An outdoor transmitter that has fallen into a puddle or other standing water or
snow may have water damage.
Transmitters are water resistant, not waterproof.
A fall can shock the transmitter or the batteries in the transmitter.
Batteries that have fallen on a hard surface may be damaged and unable to
function properly.
Complete a restart
with fresh batteries.
Use batteries dated at least six years in advance of the current year.
Outdoor Transmitter 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. This is helpful in
determining the problem.
Check the distance
and resistance between the transmitter and clock.
Transmitters 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 transmitter.
Battery life is over 24 months when using reputable battery brands for both
Alkaline and Lithium batteries.
Mounting/Positioning Outdoor Transmitter
Mount outdoor temperature transmitters vertically and under a bit of an
overhang.
Protect the outdoor transmitter from standing rain or snow, and from the
overhead sun, which can cause it to read incorrectly. Generally, mounting under
an eave or deck rail works well.
Construct a small roof or box for the transmitter if you do not have an overhang.
Please be sure the box is vented.