I walked by my acurite 1536 this morning and noticed it was making a soft grinding sound. I had never heard that before. I took it down and changed the batteries, but it made the same sound after putting it back on it's mount. Any ideas?
Robert I'm guessing your talking about a 5 in 1 sensor. The noise is either coming from the aspirating fan going bad or hitting something inside or the anemometer bearings needing lubrication. It is normal for the fan to make some noise but if you never heard it before its likely something changed.