Lennox ComfortSense 8500 Series User Manual

27
Table 6. Error Codes and Reminders
Condition Issue Display System Action
Action to Clear / Recovery
Condition
Minor
Outdoor Temperature
(RT17) Sensor
Problem
Outdoor
Temp
Sensor
Displayed on

If measurement of the outdoor
temperature sensor is out of

/ short detection, the alarm
will be activated. Alarm will
automatically clear once in
range condition is detected.
Check sensor and wiring.
Minor
Discharge (Supply) Air
Temperature Sensor

Discharge
Air Temp
Sensor
Displayed on

If measurement of the discharge
air temperature sensor is out

open / short detection, the
alarm will be activated. Alarm
will automatically clear once in
range condition is detected.
Minor
Return Air
Temperature Sensor

Return
Air Temp
Sensor
Displayed on

If measurement of the return
air temperature sensor is out

open / short detection, the
alarm will be activated. Alarm
will automatically clear once in
range condition is detected.
Check sensor and wiring.
Minor


Economizer
Fault
Displayed on


building is not getting the designed

Minor


Too High
Economizer
Fault
Displayed on

Ventilation CFM is too high so
the RTU is wasting energy.

Lennox ComfortSense 8500 Series Specifications

General

Brand	Lennox
Model	ComfortSense 8500 Series
Category	Thermostat
Language	English