Lennox iComfort S30 Installation And Setup Manual page 39

Table 1. Alert Codes and Troubleshooting
Applicable
Alert Priority
System
Code Condition
Components
352 Critical Air handler
353 Critical Air handler
354 Critical Air handler
355 Critical Air handler
370 Critical Furnace
Moderate / Equipment
380
Critical interface module
Moderate / Equipment
381
Critical interface module
Equipment
382 Moderate
interface module
400 Critical Outdoor unit
Critical alerts are displayed on the Home screen, in the Homeowner alert button, and in the Installer alert button. Minor and
moderate alerts are found only in the Installer alert button.
Alert Text Component or System Operational State and Troubleshooting Tip
" Either the pilot relay contacts did not close or the relay coil in the electric heat section
There is a problem with
did not energize.
the air-handler's second
stage electric heat. " The air-handler will operate on first stage electric heat until the issue is resolved.
" Either the pilot relay contacts did not close or the relay coil in the electric heat section
There is a problem with
did not energize.
the air-handler's third
stage electric heat. " The air-handler will operate on first stage electric heat until the issue is resolved.
" Either the pilot relay contacts did not close or the relay coil in the electric heat section
There is a problem with
did not energize.
the air-handler's fourth
stage electric heat. " The air-handler will operate on first stage electric heat until the issue is resolved.
" Either the pilot relay contacts did not close or the relay coil in the electric heat section
There is an issue with the
did not energize.
air-handler's fifth stage
electric heat. " The air-handler will operate on first stage electric heat until the issue is resolved.
" The system will not operate.
The furnace control has
" Dealer has cut the W914 jumper (Dehum, Harmony III)
not received 24VAC pow­
er for two minutes or more
" The thermostat monitors the DS terminal in the furnace for power and if the link has
on the DS terminal
been cut then power will be lost to DS.
" Interlock relay is energized, but input is not sensed after three seconds.
" There will be no heating or cooling due to this alert code – moderate condition.
Interlock relay failure (IFC
or AHC mode only).
" De-energize interlock relay and energize after five minutes if demand is still present
– critical condition.
" Interlock relay continuously sensed (with relay off).
Interlock relay stuck (IFC
" There is no heating and cooling operation – moderation condition.
or AHC modes only)
" After 10 minutes if event still exist it will be escalated – critical condition.
Relay W1 failure (IFC and
" W1 relay is energized but input is not sensed after three seconds.
AHC modes only)
" Thermostat demand Y1 is present; however compressor is not running.
" Check power to unit.
The compressor internal
" This alert code is automatically cleared after current is sensed in both RUN and
overload has tripped.
START sensors for at least two seconds or after service is removed, or after power
reset.
39
How to clear alert code
Automatically clears after fault re­
covered.
Automatically clears after fault re­
covered.
Automatically clears after fault re­
covered.
Automatically clears after fault re­
covered.
This alert code will clear when
24VAC is continuously sensed on
DS terminal for a minimum of 10
seconds or on a power reset.
Automatically clears after fault re­
covered.
Automatically clears 30 seconds
after fault clears.
Automatically clears when W1 re­
lay input is sensed.
Automatically clears when the
system detects that the issue no
longer exists.