1. Set the LCD contrast to a higher level.
2. Replace the batteries

1. Remove all batteries, reinsert into the remote temperature sensor first, then into the indoor weather station.
2. Place remote temperature sensor closer to the indoor weather station.
3. Be sure all batteries are fresh.
4. No other interfering sources are being used (such as computer monitors, TV sets, headphone, or speakers) in the vicinity. The signal travels in a straight line, and electrical source near that "line" may cause interference.

1. Check/Replace batteries
2. If multiple remote sensors are in use, check location with corresponding "boxed numbers."
3. Move away from sources of heat/cold.
4. Adjust relative air pressure to a value from a reliable source(TV, radio, etc.)
5. The indoor weather station and remote sensors are calibrated at the factory. If there is a consistent problem, please contact us via email at support@lacrossetechnology.com or by phone at 1-888-211-1923

1. Humidity is below 1% or above 99%
2. TX3U or TX3UP is used for remote temperature

1. Wait until overnight for signal to be received
2. Move indoor weather station away from sources of electricity
3. Place indoor weather station in window facing Colorado
4. The first reception is most difficult, as the indoor weather station needs five continual minutes of clear signal reception. After the initial time/date set, the indoor weather station only requires one full minute of clear reception each night.

If there is a consistent problem, please contact us via email at support@lacrossetechnology.com or by phone at 1-888-211-1923