Lennox iComfort S30 Installation And Setup Manual page 47

Table 1. Alert Codes and Troubleshooting
Applicable
Alert Priority
System
Code Condition
Components
Moderate/
IHarmony Damper
542
control module
Critical
Moderate/
IHarmony Damper
543
control module
Critical
Moderate/
IHarmony Damper
544
control module
Critical
Moderate/
IHarmony Damper
545
control module
Critical
Moderate / Equipment
594
Critical interface module
600 Critical Outdoor unit
601 Critical Heat Pump
602 Minor Air Conditioner
700 Moderate S30
701 Moderate S30
702 Moderate S30
703 Moderate S30
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
Zone 1 Temperature
Sensor Problem
" Zone temperature sensor reading out of range.
" Open or short zone temperature sensor detected for more than five second.
Zone 2 Temperature
Sensor Problem
" Damper control module will operate in non-zone mode (all dampers open) – moder­
ate condition.
Zone 3 Temperature
Sensor Problem " If after 10 minutes the condition does not change, the priority code is change to criti­
cal. System will continue to operate in non-zone mode.
Zone 4 Temperature
Sensor Problem
Pre-coil discharge air tem­
" Interlock relay energized, but input not sensed after three seconds.
perature sensor problem
" No heating and cooling operations.
(DFM mode only). Ad­
vances from moderate to
" De-energize interlock relay and re-energized five minutes later if demand is still
critical after ten (10) min­
present.
utes.
" Load shedding function provides a method for a local utility company to limit the
Compressor has been
maximum power level usage of the outdoor unit.
cycled OFF on utility
" The feature is activated by applying 24VAC power to the L and C terminals on the
load shedding.
outdoor control.
" This is a low temperature protection feature.
" Outdoor unit will not operate when the outdoor temperature is at or below ­4°F
(­20°C).
Outdoor unit has been
" If the unit is operating and the outdoor temperature drops below ­4°F (­20°C), the
cycled OFF on low tem­
perature protection. unit will continue to operate until the iComfort
perature drops to ­15°F (­26°C).
" Outdoor unit ambient sensor provides temperature readings
Low ambient conditions
prevent the use of the air
Outdoor unit will not operate due to outdoor ambient conditions.
conditioner unit.
The temperature sensor in
" Recalibrate thermostat to clear.
the thermostat is not
" Replace thermostat if needed.
working properly.
The thermostat is reading
indoor temperatures
above the pre-pro­
grammed limit.
" Recalibrate thermostat to clear
The thermostat is reading
" Cool thermostat
indoor temperatures be­
" Adjust set point.
low the pre-programmed
limit. " Replace thermostat, if needed.
The humidity sensor in the
thermostat is not working
properly.
®
S30 is satisfied or the outdoor tem­
.
47
How to clear alert code
Automatically clears 30 seconds
after condition no longer exist.
Alarm clears five minutes after
fault clears.
Automatically clears when L termi­
nal is inactive.
Automatically clears when priority
condition no longer exists.
Automatically clears when priority
condition no longer exists.
Automatically clears when the
system detects that the issue no
longer exists.
Automatically clears when the
system detects that the issue no
longer exists.
Automatically clears when the
system detects that the issue no
longer exists.