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25 User Manual
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.
SERVICE User selectable service reminder for changing a
lter, UV air purier bulb or humidier pad
(See Service Monitors, page 10)
ADJ Temperature adjustment limit has been reached
Thermostat is connected to control module (ashes if connection is lost)
Thermostat battery is low (see section 6)
NO AC AC power to system has been lost
Status
Indicator
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