Alkaline batteries will not work below freezing in the outside temperature sensor. Buy Lithium batteries for the outside sensor unit alkaline are okay for the inside unit.
PB. Joan thanks you for your help. She got it working. Thanks were posted as a new comment so you would have missed it. Thanks for the great advice on Fixya.
Andrew ModeratorPB. Joan thanks you for your help. She got it working. Thanks were posted as a new comment so you would have missed it. Thanks for the great advice on Fixya.
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There are a couple of possibilities for the failure to transmit/receive outdoor data. First, resynch the two units. This will depend on the manufacturer. For some brands, you need to take the batteries out of both the indoor and outdoor units for 10 minutes. Then put the batteries into the devices with both side by side (working inside is easier). Wait until the outdoor data is displayed. There are some weather station systems where the outdoor unit isn't weather-proof. You may need to dry the outdoor unit for several days after removing the batteries before resynching it to indoor sensor.
If the data displays properly when the outdoor unit is inside, you may have the outdoor sensor too far away from the indoor unit. (The distance will depend on the number of walls and the composition of the wall studs/siding.) Try keeping the two units closer together.
If the outdoor data isn't displayed when the two units are side by side and the reset procedure doesn't work. One device has an internal malfunction (transmitter or receiver failed). It's probably best to replace the unit. If it is under warranty, contact the manufacturer.
I hope this helps. For specific details on resetting the indoor and outdoor units to synch them, please add a comment with the make/model of your weather station.
Cindy Wells
(I've seen Davis Weather stations damaged by a close lightning strike. The outdoor unit had to be replaced.)
Did you reset the sensors after replacing the batteries? Bring the sensor inside and close to the main unit. Replace batteries on both units. Use a thumb tack and stick it into small reset hole near battery compartment to reset both units. If that doesn't work, your sensor needs more troubleshooting or needs to be replaced.
You have to push some buttons to tell the MAIN unit to scan, then put battery into the REMOTE, set channel, and hit reset through a little hole. And the MAIN should see it.
Check the channel mode that you are in. I play with the channel /memory buttons on mine and I finally get it to work. Sometimes it worksfor weeks sometimes just a day. Just glad I can get it to work - thought it was the remote unit but I was wrong.
all the mitsubishies had auto diagnosis,you must set up with the remote control to see the code and how many times blinking the button to the indoor unit.
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