Lennox ComfortSense 8500 Series User Manual

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Table 6. Error Codes and Reminders
Condition Issue Display System Action
Action to Clear / Recovery
Condition
Critical
All RTU compressors
Locked
All RTU
compressors
Locked
This error is displayed

and technician system
status screens.
• User will have to contact the
Service Contractor to have the
system serviced.
• Will need to check RTU state
• If the RTU recovered from the
error automatically the error will
also automatically clear.
Critical
RTU Fault State
Detected
RTU Fault
State
Detected
This error is displayed

and technician system
status screens.
• User will have to contact the
Service Contractor to have the
system serviced.
• Will need to check RTU state.
• If the RTU recovered from the
error automatically the error will
also automatically clear.
Reminder
Routine system
check up
Routine
system
check up
Displayed on

• Pressing clear button will clear
the reminder.
• Or pressing remind later on
pop-up screen will extend the
duration.
Reminder
Custom reminder 1
User
Editable
Displayed on

• Pressing clear button will clear
the reminder.
• Or pressing remind later on
pop-up screen will extend the
duration.
Reminder
Custom reminder 2

Lennox ComfortSense 8500 Series Specifications

General

Brand	Lennox
Model	ComfortSense 8500 Series
Category	Thermostat
Language	English