I need operating instructions for lacrosse technology model# ws-9133un-it

yourspacebarisbroken. Ifixedthequestionforyou.

That model number looks wrong I presume it is a weather station? All questions need full 'make model (what it is) please.

https://www.lacrossetechnology.com/pages/where-do-i-find-a-manual-for-my-station

308-2316

https://www.lacrossetechnology.com/products/308-2316

....

try changing channels on all sensors and the receiver.. You will have to go through a wait time as before. This worked for me last year, but mine eventually failed completely this year

WS 8418AL IT Tomorrow Weather Today by La Crosse Technology

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:

SPECIFICATIONS:
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.

Fixya is an independant support site that is not related to the company that you are dealing with. We have no way of knowing what communication you have had with LaCrosse technology.