Lennox iComfort S30 Installation And Setup Manual page 31

Table 1. Alert Codes and Troubleshooting
Applicable
Alert Priority
System
Code Condition
Components
40 Minor Outdoor Unit
S30, furnace, air
handler, outdoor
unit, equipment
105 Critical
interface or
IHarmony damper
control module
110 Critical Furnace
111 Critical Furnace
112 Critical Furnace
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
The HP could not
progress the room tem­
perature 0.5°F towards
the set point in 30 min­
utes.
" The heat pump locks out on the "HP heating Lockout Time" setting in the HD Display
System will switch to sec­
ondary heat source. "Installer/System Devices / Heat Pump screen" (Default is 120 minutes). The issue
is the heat pump could not progress the room temperature by 0.5F towards the set
point in 30 minutes.
(Secondary source is
electric heat or furnace in " Set the low balance point and high balance point as close together as possible. (This
dual -fuel applications).
is 3°F difference – Example: set high balance point at 35°F and low balance point
would set at 32F).
(Software issue: The is­
sue is the 30-minute timer
" Below the low balance point, the furnace will heat the home / between the low and
is not resetting to 30 min­
high balance point, the heat pump and furnace will heat the home.
utes when the tempera­
" If the heat pump cannot raise the temperature 0.5°F in 30 minutes on the zone or
ture rises 0.5°F.
zones, the "HP heating Lockout Time" (Location: Installer set/System devices/HP
After 30 minutes, it caus­
heating Lockout Time / default is 120 minutes) will lock the heat pump off when the
es alarm 40 to be set (er­
outdoor temperature is above the high balance point.
roneously), and the heat
pump goes into the "HP " The gas furnace will finish the heating cycle.
heating Lockout Time"
" The gas furnace is locked out and all the heat is provided by the heat pump.
mode which indicates that
the heat pump could be
off for a maximum of 120
minutes. Range can be
set between 60 to 120
minutes)
" System component (device) is unable to communicate.
" This may indicate the existence of other active alert codes.
" In most cases errors are related to electrical noise. Verify that high voltage power
A system component has
lost communication with is separated from the low voltage communication wires.
the system.
" Check for incorrectly wired or loose connections between system components (de­
vices).
" Check for a high voltage source of noise close to the system.
" This alert code may appear during a brownout.
The component line volt­
" Line voltage is below its designed operating value.
age is too low.
" Check and correct the power line voltage.
" The unit is reporting that its power and neutral lines are reversed.
The component line pow­
" Turn off the power to the system and correct the line power voltage wiring.
er voltage wiring is re­
versed.
" System resumes normal operation five seconds after critical condition is recovered.
" The thermostat will shut down the system.
The reporting component
" Provide proper earth ground to the equipment.
cannot find earth ground.
" System resumes normal operation five seconds after critical condition is recovered.
31
How to clear alert code
Clears when heat pump comes
out of "HP heating Lockout Time"
timer setting (Range can be set
between 60 to 120 minutes.
Default is 120 minutes).
Automatically clears when the
system detects the issue no
longer exists.
Automatically clears when the
system detects the issue no
longer exists.
Automatically clears when the
system detects the issue no
longer exists.
Automatically clears when the
system detects the issue no
longer exists.