Install Instructions

54
Soft Disable
Soft disabling is when the Lennox communicating thermostat nds an unknown
control on the communicating system communication bus. The thermostat
sends the unknown control a message to go into soft disable mode until the
component is properly congured or removed.
Sometimes soft disable will occur when a control is being replaced.
Reconguring the system should resolve this issue.
The Lennox communicating thermostat will not show a alert code for a soft
disabled control. When soft disabling occurs only the control that has been
disabled will display the blinking LED status or seven-segment display indicator.
Refer to the device’s installation and setup guide for further guidance.
The iComfort control with the soft disable state will indicate so as follows:
• On air handler, integrated furnace and outdoor controls, the soft disable state
is display by double horizontal lines on seven segment display.
• On iHarmony damper control module and EIM the green LED will blink 3
seconds on and 1 second off.
Possible Cause
• Soft disable may occur when a control has been replaced. Reconguring the
system should resolve this issue.
• Sometimes Lennox communicating thermostat detects a new device or an
existing device or a device on the system that is not communicating with the
thermostat. If this occurs, an alert code 10 is activated and the thermostat
sends a soft disable command to the offending device on the communications
bus (outdoor control, IFC, AHC, EIM, or damper control module).
Re-Congure System
Use the following procedure if any controls are displaying the soft disable
indicator:
1. Conrm proper wiring between all devices such as thermostat and smart
hub.
2. Cycle power.
3. Go to the menu > settings > advanced settings > view dealer control
center. Touch proceed to continue.
4. Select equipment.
5. Touch reset.
6. Touch re-congure system.
7. Select conrm to continue.
8. The thermostat will reboot and start through the system commissioning
procedure.
Service Notication Codes
The following are service notication alert codes.
Table 18. Service Alert Notication Codes
Service Alert Code Function
3000 Filter 1
3001 Filter 2
3002 Humidier pad
3003 UV Light
3004 Maintenance
3005 PureAir Maintenance
4000 User Wi-Fi state change, disabled
4001 Firmware download failed
4002 Image le download failed