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User Manual 24
Status
Indicator
Status Indicators
Status indicators appear in the display to let you know if your system is heating, cooling or off.
HEAT ON Heating system is running.
COOL ON Cooling system is running.
AUX Auxiliary stage of heating is running (multi-stage
systems only).
EMER
Emergency heating system is running
(heat pump systems only).
CHECK There is a potential problem with your system.
Contact a local service technician (model 7305 only).
SERVICE User selectable service reminder for changing a filter,
UV air purifier bulb or humidifier pad (see Service
Monitors, page 10).
ADJ Temperature adjustment limit has been reached.
Thermostat is connected to Wi-Fi network (flashes if connection is lost).
Thermostat battery is low (see Thermostat Maintenance, page 31).
NO POWR AC Power to system has been lost (see page 29).
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