Lennox iComfort S30 Installation And Setup Manual page 51

Table 1 Alert Codes and Troubleshooting
Applicable
Alert Priority
System
Code Condition
Component(s)
Thermostat,
furnace, air
handler, outdoor
120 Moderate
unit, equipment
interface or
IHarmony
Thermostat,
furnace, air
handler, outdoor
124 Critical
unit, equipment
interface or
IHarmony
Thermostat,
furnace, air
handler, outdoor
125 Critical
unit, equipment
interface or
IHarmony
Furnace, air
126 Critical handler or outdoor
unit
Equipment
130 Moderate
interface module
Thermostat,
furnace, air
handler, outdoor
131 Critical
unit, equipment
interface or
IHarmony
Air handler,
equipment
132 Critical
interface module or
IHarmony
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
There is a delay in the system component responding to the system. Typi­
cally this alert code does not cause any operational issues and will clear on
its own.
Unresponsive DEVICE2.
√ This alert code is usually caused by a delay in the outdoor unit responding
to the thermostat.
√ Check all wiring connections.
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 Controller
√ Ohm wires.
Missing
√ Cycle power.
√ Check voltage at component.
This alert code stops all associated system operations and waits for a heart­
beat message from the system component that is not communicating.
There is a hardware problem on a system component control. There is a
control hardware problem.
√ Replace the control if the problem prevents operation and is persistent.
Control Hardware
√ Damper control module will remain in non-zone mode (all dampers open)
Problem
for five minutes after priority condition no longer exist.
√ Remove jumper if present on indoor unit between R and W2 if equipment
interface module is in use.
There is an internal hardware problem on the system component control.
√ Typically the system component control will reset itself.
Control Internal
Communication Prob
√ Replace the system component (device) control if the problem prevents op­
eration and is persistent.
√ Configuration jumper missing on equipment interface module.
Configuration Jumper
√ Install the missing jumper.
Missing
NOTE: This is applicable in non-communicating applications only).
System component control parameters are corrupted.
√ Replace the system component control if heating or cooling is not available.
Corrupted Control Param­
√ Go to menu > advance settings > view dealer control center > equip­
eters
ment and press reset all equipment. This will allow the system to auto-de­
tect any iComfort
System component control software is corrupted.
√ Recycle power.
Failed Flash CRC Check
√ If failure re-occurs, replace the system component control.
®
components attached.
51
How to clear alert code
Automatically clears after an unre­
sponsive system component (de­
vice) responds to any inquiry.
Automatically clears after commu­
nication is re-established with ap­
plicable system component (de­
vice).
Automatically clears 300 seconds
after the issue no longer exists.
Automatically clears 300 seconds
after the issue no longer exists.
Automatically clears after the
missing or incorrectly installed
jumper is installed or corrected.
Will automatically clear when sys­
tem component (device) passes
memory self-test or system com­
ponent control is replaced.
Manual system power reset is re­
quired to recover from this alert
code.