iComfort Wi-Fi
®
7-Day Programmable Communicating Thermostat
Page 43
Table 10. Alert Codes and Troubleshooting
Critical alerts are displayed on the Home screen, in the Home
owner alert button, and in the Installer alert button. Minor and
moderate alerts are found only in the Installer alert button.
Alert
Code
PRIORITY
CONDITION
APPLICABLE
SYSTEM
COMPONENTS
ALERT TEXT
COMPONENT OR SYSTEM OPERA
TIONAL STATE AND TROU
BLESHOOTING TIP
HOW TO CLEAR
ALERT CODE
19 Minor
Thermostat
The outside temperature is
higher than the level where the
furnace or electric heat is pro
grammed to work.
The system will only use the heat
pump to warm your home
This is a notification only alert
code.
Outdoor temperature is above the
low balance point.
Indoor unit (furnace or air han
dler) will not be used to service a
heating demand.
Automatically clears
when the system de
tects that the issue no
longer exists.
29 Critical
Thermostat
The thermostat is reading an in
door temperature that is higher
than 99ºF. The thermostat will
not allow any heating operation
to begin until it senses an in
door temperature lower than
99ºF.
Indoor temperature rose above
99ºF during a heating or cooling
demand.
Heating operation is not allowed.
Check to ensure that heating
equipment is not stuck ON (re
versing valve, etc.).
Check the accuracy of the ther
mostat temperature sensor.
Select cooling system mode to
cool the indoor space.
Automatically clears
when the system de
tects that the issue no
longer exists.
30 Moderate
Thermostat
The thermostat is reading an in
door temperature that is lower
than 40ºF.
The thermostat will not allow any
cooling operation to begin until it
senses a temperature higher than
40ºF.
Indoor temperature fell below
40ºF.
Cooling operation is not allowed.
Check to ensure that cooling
equipment is not stuck ON.
Check accuracy of the thermostat
temperature sensor.
Select heating system mode to
heat the indoor space to above
40ºF.
Automatically clears
when the system de
tects that the issue no
longer exists.
31 Critical
Thermostat
The thermostat has lost com
munication with a system com
ponent for more than three min
utes.
The applicable system compo
nent (indoor, equipment interface
or damper control module or out
door unit) has not communicated
with thermostat for more than
three minutes.
Check connections.
Ohm wires.
If fault persists,
then cycle power.
Fault clears after
communication is
restored.
To Next Page
Loading...
