Operating Status - 3100/4100 Series

The Comfort Plus is set to display various operating information as described below. Press and release the up arrow to view this data.

Operating Mode - Indicates the current operating mode of the Comfort Plus system.

C = Off-Peak (Charge) Time

P = On-Peak (Control) Time

A = Anticipated Peak Time

NOTE: A bar illuminates on the lower portion of the display's second digit whenever the heating elements are energized.

Outdoor Temperature - “O”, followed by a number, indicates current outdoor temperature.

Heat Call Status - Indicates the current heat call status being received from the room thermostat.

Brick Core Charge Level - "CL" (charge level) followed by a number, indicates the current percentage of heat stored in the brick core. "CL:_" represents less than zero percent and "CL: F" represents a full core charge level.

Targeted Brick Core Charge Level - "tL" (target level) followed by a number, indicates the current percentage of brick core charge being targeted by the Comfort Plus. A display of "tL:_" indicates a target level of less than zero percent (i.e. charging not allowed or desired, such as during Peak times) and "tL: F" indicates a full core charge target level.

4100 Owner's Manual 1200051 Rev 25