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Frequently Asked Questions
“Where should I locate my thermostat?”
For best results, the thermostat should be located
approximately 5 feet above the floor on an inside wall
in an area with good air circulation. Avoid drafts from
your air ducts and windows, and heat from the sunlight,
lighting fixtures, appliances, fireplaces, etc.
“What does the antenna symbol on the display
mean?”
The T9000 thermostat displays the antenna symbol as
indication that it is communicating with its remote control
node(s) (RCN). If communication is not established, the
antenna symbol will go out.
“What do I do if the antenna symbol is no longer
displayed?”
Ensure the RCN has power. Make sure the thermostat
and RCN are in fact linked. Force the thermostat to talk
to its RCN by pushing the FAN button. If communication
is successful, the antenna icon will turn back on.
Coincidental RF interference could cause a temporary
loss of communication. In virtually all such cases, the
interference is temporary.
“Can I run multiple heating or cooling loads such
as electric baseboard heating and a window air
conditioner with one T9000 thermostat?”
Yes. In fact one T9000 thermostat can control up to
eight different RCNs.
“Why would I install multiple nodes as the same
number?”
A residential example might be several space heaters
being controlled by one thermostat. Space heaters are
portable and may be moved. A wall plug control node
could on occasion be unplugged. If it is installed to its
thermostat as a different node number, the thermostat
will always look for that node, increasing the number
of times it attempts communication. If all nodes are
installed as the same number and the thermostat hears
from at least one, it will consider the communication
good. In a hotel meeting room with multiple packaged
terminal air conditioner units, seating may be arranged
such that one unit blows air directly on some people.
The thermostat in this case will not continuously look
for a missing node if that one unit is powered off.
“When my a/c. turns off, I can’t immediately make
it run again?”
This is normal. What you are experiencing is called
in anti short-cycle delay. Because of high pressure in the
air conditioning compressor system, it’s not a good idea
to start your air conditioner immediately after it has just
shut down. The T9000 prevents this from happening by
imposing a 3-minute delay.
“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 (see the
Batteries - Installing/Changing section of this manual for
information on changing the batteries). 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.
