Lennox icomfort Wi-Fi - Page 55

iComfort Wi-Fi
®
7-Day Programmable Communicating Thermostat
Page 55
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
352 Critical
Air handler
There is a problem with the air-
handler's second stage electric
heat.
 Either the pilot relay contacts did
not close or the relay coil in the
electric heat section did not ener
gize.
 The air-handler will operate on
first stage electric heat until the
issue is resolved.
Automatically clears
after fault recovered.
353 Critical
Air handler
There is a problem with the air-
handler's third stage electric
heat.
 Either the pilot relay contacts did
not close or the relay coil in the
electric heat section did not ener
gize.
 The air-handler will operate on
first stage electric heat until the
issue is resolved.
Automatically clears
after fault recovered.
354 Critical
Air handler
There is a problem with the air-
handler's fourth stage electric
heat.
 Either the pilot relay contacts did
not close or the relay coil in the
electric heat section did not ener
gize.
 The air-handler will operate on
first stage electric heat until the
issue is resolved.
Automatically clears
after fault recovered.
355 Critical
Air handler
There is an issue with the air-
handler's fifth stage electric
heat.
 Either the pilot relay contacts did
not close or the relay coil in the
electric heat section did not ener
gize.
 The air-handler will operate on
first stage electric heat until the
issue is resolved.
Automatically clears
after fault recovered.
370 Critical
Furnace
The furnace control has not re
ceived 24VAC power for two
minutes or more on the DS ter
minal
 The system will not operate.
 Dealer has cut the W914 jumper
(Dehum, Harmony III)
 The thermostat monitors the DS
terminal in the furnace for power
and if the link has been cut then
power will be lost to DS.
This alert code will
clear when 24VAC is
continuously sensed
on DS terminal for a
minimum of 10 sec
onds or on a power re
set.
380
Moderate /
Critical
Equipment inter
face module
Interlock relay failure (IFC or
AHC mode only).
 Interlock relay is energized, but
input is not sensed after three
seconds.
 There will be no heating or cool
ing due to this alert code – mod
erate condition.
 De-energize interlock relay and
energize after five minutes if de
mand is still present – critical
condition.
Automatically clears
after fault recovered.
381
Moderate /
Critical
Equipment inter
face module
Interlock relay stuck (IFC or
AHC modes only)
 Interlock relay continuously
sensed (with relay off).
 There is no heating and cooling
operation – moderation condi
tion.
 After 10 minutes if event still exist
it will be escalated – critical con
dition.
Automatically clears
30 seconds after fault
clears.
382 Moderate
Equipment inter
face module
Relay W1 failure (IFC and AHC
modes only)
W1 relay is energized but input is not
sensed after three seconds.
Automatically clears
when W1 relay input is
sensed.