63
Table 19. Alert Codes and Troubleshooting
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. Moderate alerts
are not e-mailed to Homeowners. Dealers will get an email and code can be seen on thermostat under the installer notification section.
NOTE:
Anytime the word
DEVICE
or
DEVICE2
is used in this table, it will be replaced on all alert code notification screens with the actual offending device name, for example, thermostat, heat
pump, etc.).
Alert
Code
Inverter
Flash
Code
Priority
Condition
Applicable
Component
Actual Displayed
Alert Text
Component or System Operational State and Troubleshooting Tip
126
Critical
Furnace, air
handler or
outdoor unit
Control Internal
Communication
Problem
There is an internal hardware problem on the system component control. In addition, if you have zoning the alert code is
triggered when your zone temperature is deviating away from set point persistently.
• Typically the system component control will reset itself.
•
Replace the system component (device) control if the problem prevents operation and is persistent.
• Automatically clears 300 seconds after the issue no longer exists.
130
Moderate
Equipment
interface
module
Configuration
Jumper Missing
•
Configuration jumper missing on equipment interface module.
• Install the missing jumper.
• Set as heat pump, furnace control or air handler control.
NOTE:
This is applicable in non-communicating applications only).
• Automatically clears after the missing or incorrectly installed jumper is installed or corrected.
131
Critical
All
communicating
components
Corrupted Control
Parameters
System component control parameters are corrupted.
•
Replace the system component control if heating or cooling is not available.
• Go to
menu
>
settings
>
advanced settings
>
view dealer control center
>
equipment
and press
reset all equipment
.
This will allow the system to auto-detect any Lennox communicating components attached.
•
Will automatically clear when system component (device) passes memory self-test or system component control is replaced.
132
Critical
All
communicating
components
Failed Flash CRC
Check
System component control software is corrupted.
• Recycle power.
• If failure re-occurs, replace the system component control.
•
Manual system power reset is required to recover from this alert code.
180
Critical
Outdoor Unit
Outdoor
Temperature
Sensor Problem
The thermostat has found a problem with the outdoor temperature sensor. In normal operation after system component control
recognizes sensors, the alert code will be sent if valid temperature reading is lost.
• Compare outdoor sensor resistance to temperature / resistance charts in unit installation instructions.
• Replace sensors pack if necessary.
•
At the beginning of (any) configuration, furnace, air-handler control or equipment interface module will detect the presence of
the sensor(s).
•
If detected (reading in range), appropriate feature will be set as ‘installed’ and shown in the ‘About’ screen.
•
Automatically clears upon configuration, or sensing normal values.
