Lennox iComfort Wi-Fi Setup Manual page 54

Table 10. Alert Codes and Troubleshooting
Alert PRIORITY
Code CONDITION
Air handler, equip­
345 Critical
346 Critical
347 Critical
348 Critical
349 Critical
350 Critical
351 Critical
507343-01
APPLICABLE
SYSTEM
COMPONENTS
The O relay on the system
component has failed. Either
ment interface
the pilot relay contacts did not
module or heat
close or the relay coil did not
pump
energize.
The heat pump configuration
link not cut on the air handler
Air handler
control.
The Y1 relay on the applicable
Furnace, air han­ system component has failed.
Either the pilot relay contacts
dler or equipment
did not close or the relay coil
interface module
did not energize.
The Y2 relay on the applicable
system component has failed.
Furnace or air
Either the pilot relay contacts
handler
did not close or the relay coil
did not energize.
The O to R link on the furnace
Furnace
needs to be restored.
The air-handler's electric heat
is not configured or incorrectly
Air handler
configured.
There is an issue with the air-
handler's first stage electric
Air handler
heat.
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
ALERT TEXT
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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TIONAL STATE AND TROU­
BLESHOOTING TIP
Possible O relay / stage 1 failure.
Pilot relay contacts did not close
or the relay coil did not energize.
Replace system component (de­
vice) control.
If error is applicable to the XC/XP
25, the outdoor control will need
to be replaced.
Configuration link not cut on air
handler control.
Cut O to R.
This is only applicable with non-
communicating heat pump with
communicating indoor unit.
System operation will stop.
Possible Y1 relay / stage 1 fail­
ure.
Pilot relay contacts did not close
or the relay coil did not energize;
There is no input back to the ap­
plicable system component con­
trol.
Possible Y2 relay / stage 2 fail­
ure.
Furnace pilot relay contacts did
not close or the relay coil did not
energize
No input back to furnace or air
handler control. .
Configuration link R to O needs to
be restored.
Repair cut link or hard-wire.
Only applicable in non-communi­
cating mode.
Heat call with no configured or in­
correctly configured electric heat.
Check for proper configuring un­
der Configuring Electric Heat
Stages in the air handler installa­
tion instructions.
Either the pilot relay contacts did
not close or the relay coil in the
electric heat section did not ener­
gize.
Possible heat section / stage 1
failure.
Pilot relay contacts did not close,
or the relay coil in the electric
heat section did not energize.
Air handler will operate on first
stage for reminder of the heat
call.
HOW TO CLEAR
ALERT CODE
Automatically clears
after the fault recov­
ered following reset.
Automatically clears
when the system de­
tects that the issue no
longer exists.
Automatically clears
after reset and Y1 in­
put sensed.
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
after electrical heat de­
tection is successful.
Automatically clears
after fault recovered.