Lennox iComfort Wi-Fi Setup Manual page 43

Table 10. Alert Codes and Troubleshooting
Alert PRIORITY
Code CONDITION
19 Minor
29 Critical
30 Moderate
31 Critical
®
iComfort Wi-Fi
APPLICABLE
SYSTEM ALERT TEXT
COMPONENTS
The outside temperature is
higher than the level where the
Thermostat
furnace or electric heat is pro­
grammed to work.
The thermostat is reading an in­
door temperature that is higher
than 99ºF. The thermostat will
Thermostat not allow any heating operation
to begin until it senses an in­
door temperature lower than
99ºF.
The thermostat is reading an in­
door temperature that is lower
Thermostat
than 40ºF.
The thermostat has lost com­
munication with a system com­
Thermostat
ponent for more than three min­
utes.
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.
COMPONENT OR SYSTEM OPERA­
TIONAL STATE AND TROU­
BLESHOOTING TIP
•
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.
•
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.
•
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.
•
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.
7-Day Programmable Communicating Thermostat
Page 43
HOW TO CLEAR
ALERT CODE
Automatically clears
when the system de­
tects that the issue no
longer exists.
Automatically clears
when the system de­
tects that the issue no
longer exists.
Automatically clears
when the system de­
tects that the issue no
longer exists.
•
If fault persists,
then cycle power.
•
Fault clears after
communication is
restored.