•AUDIO PROMPTING — Each time you press a button, the thermostat will beep (this feature works only when the thermostat is attached to the wall and 24 VAC power is present to the thermostat).
•BACKLIT DISPLAY — When you press any button on the thermostat, the display is lit for approximately eight seconds (this fea- ture works only when the thermostat is attached to the wall and 24 VAC power is present to the thermostat).
•SYSTEM INDICATOR LIGHTS — The four lights on the upper right part of the thermo- stat indicate system operation (see PARTS OF THE THERMOSTAT).
•COMPRESSOR SHORT CYCLE PROTEC- TION — To protect your compressor from potential damage due to rapid cycling, this thermostat has a
between heat pump heating and cooling cycles. The following may cause a time delay in COOL:
a) Return of power after a power outage.
b) Pressing SYSTEM to change operating
HEAT/EMER/OFF/
COOL/AUTO
modes.
c)Pressing or , creating a call for HEAT or COOL too soon after a previous call.
•COMPRESSOR LONG TERM CYCLE PROTECTION — If your system begins to operate too soon after an extended power outage, the compressor may be damaged due to crankcase oil temperature change. This thermostat has a
16