Lennox icomfort Wi-Fi - Page 50

507343-01
Page 50
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
206 Critical
Furnace
The furnace gas valve second-
stage relay is faulty.
 Furnace will operate on first-stage
for the remainder of the heating
demand
 If unable to operate second-
stage, replace furnace control.
Automatically clears
after the issue is cor
rected.
207 Critical
Furnace
The furnace hot surface igniter
is open.
 Measure the resistance of hot
surface igniter.
 Replace the igniter if it is not with
in the specified range found in fur
nace installation instruction.
Automatically clears
after the issue is cor
rected.
223 Critical
Furnace
The furnace low pressure
switch is open.
 Check pressure (inches w. c.) of
the low pressure switch closing
during a heat call.
 Measure operating pressure
(inches w. c.).
 Inspect vent and combustion air
inducer for correct operation and
restriction.
Automatically clears
after the issue is cor
rected.
224 Critical
Furnace
The furnace low pressure
switch is stuck closed.
 Check operation of low pressure
switch to see if it is stuck closed
for longer than 150 seconds dur
ing a heat call.
 Measure operating pressure
(inches w. c.).
 Inspect vent and combustion air
inducer for correct operation and
restriction.
Automatically clears
after the issue is cor
rected.
225 Critical
Furnace
The furnace high pressure
switch is failing to close.
 Check pressure (inches w. c.) of
high pressure switch closing dur
ing a heat call.
 Measure operating pressure
(inches w. c.).
 Inspect vent and combustion air
inducer for correct operation and
restriction.
Automatically clears
after the issue is cor
rected.
226 Critical
Furnace
The furnace high pressure
switch is stuck closed.
 Check operation of high pressure
switch closing during a heat call.
 Measure operating pressure
(inches w. c.).
 Inspect vent and combustion air
inducer for correct operation and
restriction.
Automatically clears
after the issue is cor
rected.
227 Moderate
Furnace
The furnace low pressure
switch is open in run mode.
 Check pressure (inches w. c.) of
low pressure switch closing dur
ing a heat call.
 Measure operating pressure
(inches w.c.).
 Inspect vent and combustion air
inducer for correct operation and
restriction.
Automatically clears
after the issue is cor
rected.
228 Moderate
Furnace
The furnace control is not able
to calibrate the pressure
switch.
 Unable to perform pressure
switch calibration.
 Check vent system and pressure
switch wiring connections.
 Check the drain trap for blockage.
Automatically clears
after a successful cali
bration.