Lennox iComfort S30 Installation And Setup Manual page 51

Initial notification of critical alerts will pop up on the home screen and will be listed under notification menu. Minor and moderate alerts are found only under the notification menu.
* Current Lennox modulating outdoor units are XC20, XP20, XC25 and XP25.
Applicable
Alert Priority
System
Code Condition
Component(s)
30 Moderate Thermostat
31 Critical S30 Smart Hub
S30, furnace,
32 Moderate air handler or
outdoor unit
Indoor or
34 Critical
outdoor unit
36 Critical Thermostat
37 Critical Thermostat
Table 18. Alert Codes and Troubleshooting
Actual
Displayed Alert Component or System Operational State and Troubleshooting Tip
Text
The thermostat will not allow any cooling operation to begin until it senses a temperature higher
than 40ºF.
Low
• Cooling operation is not allowed.
Temperature
• Check to ensure that cooling equipment is not stuck ON.
Protection
• Check accuracy of the thermostat temperature sensor.
• Select heating system mode to heat the indoor space to above 40ºF.
The applicable system component (indoor, equipment interface or damper control module or
outdoor unit) has not communicated with thermostat for more than three minutes.
Lost
• Check connections and voltages.
Communication
• Ohm wires for electrical continuity.
with DEVICE2
• If float switch is installed on air handler drain pain, check condensate line to ensure it is not
clogged and tripping the float switch connected in series with R terminal.
The applicable system component (device) is resetting itself. This issue may occur during a
power outage or power fluctuation in the system. If persistent or if it coincides with the system
operations then proceed with the following troubleshooting steps.
Asynchronous
• Check the power connections.
Reset DEVICE2
• Check the amp draw at the transformer (the transformer maybe overloaded).
• Check 24VAC voltage at the system component (device).
• If the fault persists after checking the connections, replace the applicable control.
The thermostat does not know the capacity (tonnage) of the indoor or outdoor unit. The applica-
ble system component is missing the programmed unit capacity.
• Remove power to thermostat before programming the unit control.
Must Program
• Go to applicable unit control and program the unit capacity manually (see the unit installation
Unit Capacity
instruction for configuration instructions).
for DEVICE2
• Once configuration is complete then reconnect thermostat wires.
Go to menu > advance settings > view dealer control center > equipment and press reset
•
all equipment. This will allow the system to auto-detect any iComfort components attached.
The system has been heating for at least 15 minutes without a demand for heating.
• Run the system in diagnostic mode and verify that it matches actual equipment operation. Go
to menu > settings > advance settings > dealer control center > diagnostics and press
Heating when
the start diagnostics button.
Not Requested
DEVICE2
• Check for other alert codes that may be preventing the system from operating as expected.
• Check all heating equipment to determine cause of heating demand.
• Recycle power.
The system has been cooling for at least 15 minutes, without a demand for cooling.
• Run the system in diagnostic mode and verify that it matches actual equipment operation. Go
to menu > settings > advance settings > dealer control center > diagnostics and press
Cooling when
the start diagnostics button.
not Requested
DEVICE2 • Check for other alert codes that may be preventing the system from operating as expected.
• Check all cooling equipment to determine cause of cooling demand.
• Recycle power.
51
How to clear alert code
Automatically clears when the
system detects that the issue no
longer exists.
If fault persists, then cycle
power.
Fault clears after communication
is restored.
To clear the alert code, go to
menu > settings > advanced
settings > view dealer control
center > notifications and
select the alert code and press
the clear button.
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.