506566−01 09/10
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Bold text indicates a tab, button, or text display on the thermostat.
Table 5. Troubleshooting Tips
No. Corrective Action / CommentsPossible CauseIssue / Problem
4 A humidifier was added to the
system as non−communicating
equipment and the thermostat
does not provide the ability to
adjust the RH set point.
Humidification Control
Mode is set for "Display
only" which will not allow
the icomfort system to con-
trol the humidifier.
− In the installer program, select the equipment tab. Select
System 49W95 from the device list using the up/down
arrows and press the edit button. Use up/down arrows to
select Humidification Control Mode from the list. Select
the desired humidifier control mode: Basic, Precision, or
Dew Point. (Basic is the most popular) and press the
save button. Follow the red instructions then exit the
system.
− If Humidification Control Mode is not offered as a
menu item choice, the Humidifier must be added to the
icomfort system using the Add or Remove Non−com-
municating equipment screen under the thermostat
installer program in the setup tab.
5 The non−communicating outdoor
unit is part of the system, but the
thermostat does not display the
outdoor unit.
The outdoor unit was not
added as a non−communi-
cating unit during initial
system setup.
In the thermostat installer program select the setup tab
and follow the on screen instructions until you reach the
Add or Remove Non−communicating equipment
screen; press yes. Select Outdoor Unit Type from the
menu and press the edit button. Select 1 Stage AC Unit
or 2 Stage AC Unit and press save. Follow the red in-
structions then exit the system.
6 High Balance Point and Low
Balance Point are not listed as
a menu item to adjust the set-
point on the thermostat of the
heat pump system.
Balance Point Control
must be enabled to display
as the High Balance Point
and Low Balance Point in
the menu and provide the
ability for the installer to ad-
just the setpoint.
− In the installer program select the equipment tab, then
scroll down to system device to SYSTEM 49W95 and
press edit. Scroll down the menu item choices to Bal-
ance Point Control and press edit. Select enable and
press save. High Balance Point and Low Balance
Point are now listed; adjust the balance point settings
and press save.
− If Balance Point Control is not shown as a menu item
choice, the system does not have/recognize an outdoor
sensor or the system is not a heat pump.
7 icomfort thermostat does not
show a choice for Dew Point
Control Humidification mode
(only Basic and Precision
choices).
Dew Point Control will
only be displayed if the
system has an outdoor
sensor.
− Add an outdoor sensor to the system and connect to the
outdoor sensor terminals on the indoor unit.
− icomfort system is not able to read the outdoor tempera-
ture sensor in the icomfort outdoor unit, check outdoor
sensor.
8 The icomfort does not display an
alert code message, but the fur-
nace or unit control displays a
diagnostic code.
The red Critical Alert icon
and homeowner alert tab
do not display non−critical
alerts.
Go to the installer program alert tab to view all alerts and
details about those alerts.
9 The icomfort thermostat does not
display the Model # and or Serial
# indoor or outdoor unit.
The icomfort control was
replaced with a replace-
ment control before the
icomfort system was initial-
ly setup or configured.
− Replacement icomfort controls do not have the Model #
or Serial # loaded in the control.
− The Model # and Serial # cannot be added to the control.
− System will still operate normally.
10 A non−communicating 2−stage
outdoor unit was added to the
system but the unit only runs in
2nd stage.
The "W915 2 Stage Compr"
clippable option link on the
furnace or air handler con-
trol must be cut when used
with a non−communicating
2−stage outdoor unit.
Cut the "W915 2 Stage Compr" option link on the furnace
or air handler control.
11 Transfer the Model #, Serial #
and system settings to a re-
placement control.
The icomfort system is ca-
pable of copying settings
from the previous configu-
ration to the new compat-
ible device (control) found.
Reconfigure the system using the installer program and
select the setup tab. The system will go through the sys-
tem discovery process. The thermostat will display miss-
ing devices (old control) and found compatible devices
(new control). Press the next button to accept the new
device and copy the settings. Thermostat will display Set-
tings were copied after successfully copying the informa-
tion to the new control. See section title "Reconfiguring a
system" in this manual.
12 Determine the actual Software
version of the thermostat or one
of the icomfort unit controls.
icomfort software is stored
in the control and can be
retrieved.
− In the installer setup program select the equipment tab
and select the unit or control from the system device list.
− Press the about button and the software version will be
displayed along with Model # and Serial #.
table continued on next page
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