Error Codes And Reminders - Lennox ComfortSense 8500 Series Installation And Setup Manual

Error Codes and Reminders

Any active history for notifications are listed under menu > notification. Press the down arrow icon next to
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Condition Issue
Built-In Temp Sensor
error - temperature
Critical sensor reads -4°F
or less or 158°F (+/-
5°F) or greater.
Remote temperature
sensor error. External
Critical sensor reads -4°F
or less or 158°F (+/-
5°F) or greater.
Table 6. Error Codes and Reminders
Display System Action
• Indoor temp is
displayed as "--" on the
Temperature
home screen.
Sensor
• This error is displayed
Error
on the notification
screen as well.
• Indoor temp is
displayed as "--" on the
home screen.
• This error is displayed
on the notification
External screen as well.
Sensor
• When configured for
Error
external temperature
sensors and there
is an error, the unit
will automatically
switch to the internal
temperature sensor.
23
Action to Clear / Recovery
Condition
• If the sensor starts detecting
a normal operating range, the
error message will automatically
clear and the system will return
to normal operation.
• Contact service contractor to
replace the CS8500.
• If the sensor starts detecting
a normal operating range, the
error message will automatically
clear and the system will return
to normal operation.
• Contact service contractor
to replace the external
temperature sensor.
• Other than replacing the
CS8500, go to the technician
setting > temperature sensor
config. and change the
temperature sensor source back
to internal temperature sensor.
That will remove the error
message from the home and
notification screens.