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What do the LED’s below the display mean?
When the LED’s are on...
HEAT – The heating cycle has been
activated.
FAN – The fan has been activated.
COOL – The cooling cycle has been
activated.
AUX – The second stage of heating or
cooling has been activated.
CHECK – Indicates that the heat pump should
be serviced by a qualified technician.
EMER – Emergency heat has been activated.
LED Names • = Model has the LED
Thermostat
Model HEAT FAN COOL AUX CHECK EMER
9901i
•••
9915i
•••
9920i
•••
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