La Crosse Logo

La Crosse Recent Questions, Troubleshooting Help & Support

Do you work here? Claim your company

  • 94 Products
  • 545 Answers

It means OverFLow - the display unit can read from -39.8°F to 139.8 °F and it is getting a signal from the sending unit that is lower than -39.8 or higher than 139.8. This happens when the sending unit goes haywire (or, not likely, when temperature out doors is REALLY lower or higher than the range). Replace the sending unit. If you really like the product, I suggest you buy another of the same model. It will come with a new sending unit and that will be read by both of the displays if they are within 80 ft of the sending unit. Good luck.

La Crosse... | Answered on Feb 22, 2015

when you have an expensive watch, take it to a jeweler or, to a pawn shop. Many pawn shops change batteries, and are cheaper than jewelers. Always ask for price first.

La Crosse... | Answered on Jan 30, 2015

try holding down on one of the set pins for 2 to 5 seconds, then let off. some watches wont reset unless you do that.

La Crosse... | Answered on Jan 30, 2015

You may download a copy of the manual at

It's a PDF file so your viewer should be able to magnify it to just about any size you want.

La Crosse... | Answered on Dec 31, 2014

Make sure they are both set to the same channel (normally channel 1) put them next to each other then press reset on the temperature unit only.

La Crosse Radio... | Answered on Dec 28, 2014

If you have not talked to La Cross and if you continue to have the problem, most likely it may be a signal problem. I had a similar
problem with an earlier model and found that it only worked on
the west facing wall as the signal is coming from WWVB which is the NISTtime signal radio station near Fort Collins, Colorado. Get a fresh battery, reset the clock, put it in a west facing window and leave it overnight. If it doesn't work, contact La Cross as above post.

La Crosse Radio... | Answered on Dec 24, 2014 Hi Bill click link this will explain in detail your question i think you will find it is automatic and sets itself ..but check instructions will tell you hope this helps

La Crosse... | Answered on Dec 23, 2014

Hi Vickie....try this....good luck to you.

La Crosse... | Answered on Nov 17, 2014

Is the picture the type of clock your referring to? If so you cant set the time zone on that type of clock. You can change the time though.

La Crosse Radio... | Answered on Nov 05, 2014

I'm not totally sure what you mean by "reset the time" because the unit normally sets the time automatically from the WWVB radio time signal. If you want to do it manually, this is what the Instruction Manual (PDF format) says:


In case the atomic clock is not able to detect the WWVB-signal (disturbances, transmitting distance, etc.), the time can be manually set. The clock will then work as a normal Quartz clock.

  1. The hour digits will start flashing in the upper LCD.
  2. Select the desired hours by pressing and releasing the + key.
  3. Press and release the SET key to advance to the minutes setting.
  4. Now the minute digits will start flashing.
  5. Select the desired minutes by pressing and releasing the + key. If the + key is held, the units
    will increase by 5.
  6. Press and release the SET key to confirm the Time setting and continue to the Year setting.

La Crosse Radio... | Answered on Nov 05, 2014

these really aren't atomic clocks and are set at the factory. It receives, it's LF signal out of Colorado and should correct itself. If not contact the manufacturer.

La Crosse Radio... | Answered on Oct 29, 2014

Based on a different, but similar, LaCrosse model (the WS-8611), it would appear to be an OverFlow indication, meaning that it's out of range. Here's a quote from that unit's manual:

Temperature measuring range:
Indoor : 14.2F to +139.8F with 0.2F resolution
(-9.9C to +59.9C with 0.1C resolution)
("OF.L" displayed if outside this range)
Outdoor : -39.8F to +139.8F with 0.2F resolution
(-39.9C to +59.9C with 0.1C resolution
("OF.L" displayed if outside this range)

It is likely that their convention remains the same across models, but I don't work for them, so I can't guarantee it.

La Crosse... | Answered on Oct 13, 2014

I think we're not talking about a WT-3101. What model is YOUR clock?

This site lists several including some desk models on two pages and each has unique downloadable instructions.

La Crosse Radio... | Answered on Aug 29, 2014

Not finding what you are looking for?

Ask a Question

Usually answered in minutes!

Top La Crosse Experts

The Knight
The Knight

Level 3 Expert

76376 Answers

Cindy Wells

Level 3 Expert

6102 Answers

Tom Chichester

Level 3 Expert

55379 Answers

Are you a La Crosse Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides