IM 1119-1
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www.DaikinApplied.com
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 Building Management System (BMS) or Energy Management
System (EMS) may periodically cut power to units during times
of minimum heating/cooling load. If each node is assigned
a different number on the T9000 wireless thermostat, the
thermostat will continually attempt to initiate communication
with the de-activated unit node, causing excessive battery
drain. 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, in addition to any
on-board delays inherent to the unit control module.
