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Lennox ComfortSense 8500 Series User Manual

Lennox ComfortSense 8500 Series
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24
Table 6. Error Codes and Reminders
Condition Issue Display System Action
Action to Clear / Recovery
Condition
Critical
EEPROM error
(power-on)
Memory
Error
System will restore
all settings to factory
default and resume
operations.
This error is displayed

screen as well.
Contact service contractor
to replace the CS8500.
Critical
EEPROM error
(operating)
Memory
Error
System will operate
in normal mode until
󰀨
This error is displayed

screen as well.
Contact service contractor
to replace the CS8500.
Critical
Humidity sensor error


Sensor reads out of

Humidity
Sensor
Error
The reading for
humidity is not
valid. This message
indicates humidity
sensor is not working
correctly. When there
is an error the home
screen humidity
display will indicate
“--”.
This error is displayed

screen as well.
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.

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Lennox ComfortSense 8500 Series Specifications

General IconGeneral
BrandLennox
ModelComfortSense 8500 Series
CategoryThermostat
LanguageEnglish

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