Lennox iComfort S30 Installation And Setup Manual page 55

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)
Thermostat,
furnace,
air handler,
outdoor unit,
124 Critical
equipment
interface,
PureAir S or
IHarmony
Thermostat,
furnace,
air handler,
outdoor unit,
125 Critical
equipment
interface,
PureAir S or
IHarmony
Furnace, air
126 Critical handler or
outdoor unit
Equipment
130 Moderate interface
module
Thermostat,
furnace,
air handler,
outdoor unit,
131 Critical
equipment
interface,
PureAir S or
IHarmony
Air handler,
equipment
interface
132 Critical
module ,
PureAir S or
IHarmony
Table 18. Alert Codes and Troubleshooting
Actual
Displayed Alert Component or System Operational State and Troubleshooting Tip
Text
The thermostat has lost communication with a system component for more than three minutes.
System component has lost communication with the thermostat.
• Check the wiring connections.
Active Subnet
• Ohm wires.
Controller
• Cycle power.
Missing
• Check voltage at component.
This alert code stops all associated system operations and waits for a heartbeat message from
the system component that is not communicating.
There is a hardware problem on a system component control. There is a control hardware prob-
lem.
• Replace the control if the problem prevents operation and is persistent.
Control
• Damper control module will remain in non-zone mode (all dampers open) for five minutes after
Hardware
priority condition no longer exist.
Problem
• Remove jumper if present on indoor unit between R and W2 if equipment interface module is
in use.
• PureAir S jumper selector is missing
There is an internal hardware problem on the system component control.
Control Internal
• Typically the system component control will reset itself.
Communication
• Replace the system component (device) control if the problem prevents operation and is
Prob
persistent.
• Configuration jumper missing on equipment interface module.
Configuration
• Install the missing jumper.
Jumper Missing
NOTE: This is applicable in non-communicating applications only).
System component control parameters are corrupted.
Corrupted
• Replace the system component control if heating or cooling is not available.
Control
• Go to menu > advance settings > view dealer control center > equipment and press reset
Parameters
all equipment. This will allow the system to auto-detect any iComfort components attached.
System component control software is corrupted.
Failed Flash
• Recycle power.
CRC Check
• If failure re-occurs, replace the system component control.
55
How to clear alert code
Automatically clears after com-
munication is re-established with
applicable system component
(device).
Automatically clears five min-
utes after the issue no longer
exists.
Automatically clears 300 sec-
onds after the issue no longer
exists.
Automatically clears after the
missing or incorrectly installed
jumper is installed or correct-
ed.
Will automatically clear when
system component (device)
passes memory self-test or
system component control is
replaced.
Manual system power reset is
required to recover from this alert
code.