User Manual 24
Status Indicators
Status indicators appear in the display to let you know if your system is heating, cooling or off.
HEAT ON Indicates that your heating system is running.
COOL ON Indicates that your cooling system is running.
AUX Indicates that the auxiliary stage of heating is running
(multi-stage systems only).
EMER
Indicates that the emergency heating system is running
(Model 5220 - heat pump systems only).
CHECK Indicates that there is a potential problem with your
system. Contact a local service technician (Model 5220 only).
SERVICE Indicates a user selectable service reminder for changing a lter, UV air purier bulb or humidier
pad (See Service Monitors, page 10).
Status
Indicator
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