www.DaikinApplied.com
22
IM 1119-1
“I just installed the thermostat and the antenna
symbol comes and goes. What should I do?”
A poor RF signal between the thermostat and one or more
RCNs is the cause. The further away the thermostat and RCN
are from each other, the weaker the signal becomes. Distance
and also building materials, particulary metals, will block the
RF signal energy. Sheet metal is very often the problem.
Changing the position of the RCN or thermostat or both may
be required. In rare cases, where the RCN is heavily shielded,
a small section of sheet metal may need to be removed and if
necessary replaced with plastic or other nonmetallic material.
Note:
Always seek competent professional electrical and
HVAC contractors when working with your heating and cooling
system and the electrical wiring in your home or other property.
For safety and warranty reasons, always consult with a HVAC
contractor and/or the original equipment manufacturer before
making changes.
“The display on my thermostat is blank. What
happened?”
A blank display indicates your batteries are depleted. When the
low battery icon comes on there is approximately one week of
battery life remaining. We recommend that when you change
batteries, always use batteries that you know are fresh. Use four
(4) new high quality AA batteries. If you’re using the T9000 to
control a heating system, we recommend as a general practice,
putting fresh batteries in at the start of the heating season.
“If I am away for an extended time such as vacation,
how do I set the thermostat so my system does not
run excessively ?”
You have a couple of choices. The first is to press the HEAT/
COOL button on the thermostat until the display reads “OFF”
(Particularly during the heating season, we do not recommend
going to the “off” mode.) The second option is to put your
thermostat in manual mode by pressing the RUN button. You
know that you’re in the manual mode because none of the
period icons, Morning, Day, Evening, or Night will be displayed.
The “Hold” icon located above the set point temperature
will be displayed. Next, adjust the set point temperature to
minimize system operation. For example, you could adjust
to a set point of 85°F in cooling, or 65°F in heating, staying
mindful of what your temperature selection could affect such
as plants and animals that stay in your home while you are
away. During the cooling season, consider humidity as well as
room temperature. When your air conditioner runs, it not only
cools the air, it also removes moisture, lowering humidity. High
humidity can encourage mold growth.
“Can I use another T9000 thermostat without
interference?”
Yes. A T9000 thermostat and its RCN will talk between
themselves, but will never respond to or control another
thermostat in adjacent rooms, apartments, or neighboring homes.
Each node and thermostat are assigned a unique address.
