Lennox iComfort Wi-Fi Setup Manual page 70

Table 11. Troubleshooting Tips
No. Issue / Problem
During the cooling mode the dis­
played air volume on the indoor
19
control is substantially lower than
expected.
The Indoor unit is not providing
the expected air volume accord­
20
ing to the cfm shown on the in­
door unit control.
- No second stage cooling is
provided on a iComfort
door unit.
- Space temperature is above
second stage differential and
21
has run in first stage a long
time.
- No red Critical Alert icon or
alert is displayed in the
homeowner alert button.
22 No weather being displayed.
Unable to complete Wi-Fi router /
23
Internet connection
507343-01
Bold text indicates a button, or text display on the thermostat.
Possible Cause
The system may be following
"the cooling ramping" profile or
may be in "the Dehumidification
mode".
- Indoor unit air volume settings
®
in the iComfort
are not correct.
- System is operating in the
cooling mode and following
the cooling ramping profile or
dehumidification air volume.
®
out­
The red Critical Alert icon and
homeowner alert button do not
display non-critical alerts.
®
iComfort Wi-Fi not communic­
ating with router.
Refer to 507037-01 Wi-Fi Troubleshooting checklist for iComfort Wi-Fi
- During the default cooling ramping profile the blower will run for 7.5
minutes at 82% of the cooling air volume. If the "cooling ramping
profile" is selected, the system will ramp to 100% after 7.5
minutes.
- The dehumidification mode will run the system at 70% of the cool­
ing air volume which will be in addition to the air volume reduction
provided during the ramping profile. During the dehumidification
mode, a "d" will be displayed on the furnace or air handler control.
- In the installer program select the equipment button and choose
thermostat
the furnace or air handler from the system devices list and press
edit. Verify/set the correct air volume for heating and cooling
modes.
- If in the cooling mode check for cooling ramp mode or dehumidific­
ation mode as in #18.
- Go to the installer program alert button to view all alerts and de­
tails about those alerts.
- Look for alert code 401 (Compressor Long On Cycle) which indic­
ates compressor ran more than 18 hours continuous and will lock
out 2nd stage compressor.
- Cycle indoor power off and back on, alert code 401 will clear within
a few minutes.
Make sure Wi-Fi is enabled.
Page 70
Corrective Action / Comments
®
thermostat.