Lennox iComfort S30 Installation And Setup Manual page 47

Table 1 Alert Codes and Troubleshooting
Applicable
Alert Priority
System
Code Condition
Component(s)
30 Moderate Thermostat
31 Critical Thermostat
S30, furnace, air
32 Moderate handler or outdoor
unit
Indoor or outdoor
34 Critical
unit
36 Critical Thermostat
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.
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.
√ Indoor temperature fell below 40ºF.
Low Temperature
√ Cooling operation is not allowed.
Protection
√ Check to ensure that cooling equipment is not stuck ON.
√ 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
Lost Communication with
more than three minutes.
DEVICE2
√ Check connections and voltages.
√ Ohm wires.
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.
√ Check the power connections
Asynchronous Reset
√ Check the amp draw at the transformer (the transformer maybe overload­
DEVICE2
ed)
√ Check 24VAC voltage at the system component (device).
√ If the fault persists after checking the connections, replace the unit's control
board.
The thermostat does not know the capacity (tonnage) of the indoor or out­
door unit. The applicable system component is missing the programmed unit
capacity.
√ Remove power to thermostat before programming the unit control.
√ Go to applicable unit control and program the unit capacity manually (see
Must Program Unit
the unit installation instruction for configuration instructions).
Capacity for DEVICE2
√ Once configuration is complete then reconnect thermostat wires.
√ Go to menu > advance settings > view dealer control center > equip­
ment and press reset all equipment. This will allow the system to auto-de­
tect any iComfort
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 equip­
ment operation. Go to menu > settings > advance settings > dealer con­
Heating when Not
trol center > diagnostics and press the start diagnostics button.
Requested DEVICE2
√ Check for other alert codes that may be preventing the system from operat­
ing as expected.
√ Check all heating equipment to determine cause of heating demand.
√ Recycle power.
®
components attached and their capacities.
47
How to clear alert code
Automatically clears when the
system detects that the issue no
longer exists.
√ If fault persists, then cycle pow­
er.
√ Fault clears after communica­
tion 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.