Lennox iComfort Wi-Fi Setup Manual page 49

Table 10. Alert Codes and Troubleshooting
Alert PRIORITY
Code CONDITION
Furnace, air han­
180 Critical
dler or equipment
interface module
200 Critical
201 Critical
202 Critical
203 Critical
204 Critical
205 Critical
®
iComfort Wi-Fi
APPLICABLE
SYSTEM ALERT TEXT
COMPONENTS
The thermostat has found a
problem with a system compo­
nent's outdoor temperature
sensor.
The furnace roll out limit switch
Furnace
is open.
The system has lost communi­
Furnace or air
cation with the indoor unit's
handler
blower motor.
The unit size code for the in­
Furnace or air
door unit and the size of blower
handler
motor do not match.
The unit size code for the in­
Furnace or air
door unit has not been select­
handler
ed.
There is an issue with the fur­
Furnace
nace gas valve.
The furnace gas valve relay
Furnace
contact is closed.
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
•
In normal operation after system
component control recognizes
sensors, the alarm will be sent if
valid temperature reading is lost.
•
Compare outdoor sensor resis­
tance to temperature / resistance
charts in unit installation instruc­
tions.
•
Replace sensor pack if neces­
sary.
•
At the beginning of (any) configu­
ration, furnace, air-handler control
or equipment interface module will
detect the presence of the sen­
sor(s).
•
If detected (reading in range), ap­
propriate feature will be set as 'in­
stalled' and shown in the 'About'
screen.
•
Correct the cause of roll out trip.
•
Reset roll out switch.
•
Test the furnace operation.
•
Lost communication with indoor
blower motor.
•
Possible causes include power
outage, brown-out, motor not
powered, loose wiring, condensa­
tion on system component control
without cover on breaker.
•
Problem may be on system com­
ponent control or motor side.
•
Incorrect appliance unit size code
selected.
•
Check for proper configuring un­
der unit size codes for furnace/air
handler on configuration guide or
in installation instructions.
•
Remove the thermostat from the
system while applying power and
reprogramming.
•
No system component unit size
code selected.
•
Check for correct configuration.
Unit size codes for furnace and
air handler are listed in the sys­
tem component configuration
guide or installation instruction.
•
Remove the thermostat from the
system while applying power and
reprogramming.
•
Check gas valve operation and
wiring.
Check wiring on control and gas valve.
7-Day Programmable Communicating Thermostat
Page 49
HOW TO CLEAR
ALERT CODE
Automatically clears
upon configuration, or
sensing normal val­
ues.
Automatically clears
after the furnace roll
out switch is closed.
Automatically clears
after communication is
restored.
Automatically clears
after the correct match
is detected following a
reset.
Automatically clears
after the correct match
is detected following a
reset.
Automatically clears
after the issue is cor­
rected.
Automatically clears
after the issue is cor­
rected.