Lennox ComfortSense 7500 Installation And Setup Manual page 44

Priority
Error Screen 0:high
1:middle
Code Text
2:low
no external
9 1
sensor
Message
Condition
Type
The outdoor temperature
sensor is out of range
critical
(-50°F to 180°F)
System Action
For Outdoor Temperature Sensor:
No Humiditrol or Humidity oper­
ation.
D terminal stays activated and
other operation will continue to
operate.
Thermostat will stop the system
operation if input from requires
outdoor temperature informa­
tion when any of these condi­
tions, i.e. balance point control
and 2nd stage lock in are appli­
cable. System will default to
mode of operation that does
not required input from the out­
door temperature sensor.
The temperature display on the
home screen will be disabled. If
user turns on the display from
user settings and error will be
displayed again.
This error is displayed in notifi­
cation screen.
44
Action to Clear /
Recovery Condition
Replace outdoor tem­
perature sensor.