I have a equitytime thermometer and can't find the instructions for it. I just changed the batteries and can't get the outdoor to send a signal to the indoor unit. where can I find the instructions for a equity mod#31215B wireless thermometer?

Try cleaning the outdoor thermometer transmitter unit by opening it up enough to spray compressed air (Ultra Duster or similar) on the temperature sensor. It fixed the hh.h error for me.

TX is transmitter button. Pushing it forces the outdoor to send a signal

press alarm button until time and one bell shows, then press + button on back until all bells disappear.

go to http://www.taylorusa.com/digital-indoor-outdoor-thermometer-1.html and select the link for the manual (Instruction Book under support info, bottom right)

Double check the batteries to make sure they are installed correctly. If one of the batteries in the outdoor sending unit is in backwards, it will not send the outdoor data. On the indoor unit, there is typically one battery that is used for receiving the signal from the outdoor unit. If all of the batteries are in correctly but that one, you will see the display and the indoor temperature information, but the outdoor information will not be displayed. If there are reset buttons, also try them.

I believe they ask you to press the reset button on the main unit first, but that may not be your problem. Double check the batteries to make sure they are installed correctly. If one of the batteries in the outdoor sending unit is in backwards, it will not send the outdoor data. On the indoor unit, there is typically one battery that is used for receiving the signal from the outdoor unit. If all of the batteries are in correctly but that one, you will see the display and the indoor temperature information, but the outdoor information will not be displayed. Also, make sure the units are close enough to transmit.

Double check the batteries and the direction in which they are installed. If there is one backwards in the sending unit that is outside, it will not send a signal. Also, there is typically one battery in the indoor unit that is responsible for receiving the signal from the outdoor unit. If all of the batteries are in correctly except that battery, you will see the display, but will not get the data transmitted from the outside sending unit.

Double check the batteries to make sure they are installed correctly. If one of the batteries in the outdoor sending unit is in backwards, it will not send the outdoor data. On the indoor unit, there is typically one battery that is used for receiving the signal from the outdoor unit. If all of the batteries are in correctly but that one, you will see the display and the indoor temperature information, but the outdoor information will not be displayed.