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LUX TX500Ub Non Programmable Thermostat Instruction Manual

with or without a demand for heating or cooling, even when the System Mode  
switch is in the OFF position.  
NOTE: The Fan Mode switch only works if your system provides a wire for the  
thermostat’s “G” wire terminal, to control a blower fan. The Fan Mode switch  
has no effect in systems that do not have a blower fan (such as a hot water  
radiator system).  
MULTI-FUNCTION, SET SLIDE SWITCH: This switch provides an easy way to  
quickly access the most commonly used thermostat settings. This switch has 4  
individual positions, and unless a specific setting is being adjusted, this switch  
should always remain in the RUN position for the thermostat to control the room  
temperature. The other Set Slide switch positions are described in greater detail  
in the ADVANCED FEATURES section. NOTE: this switch is only operable when the  
thermostat is in “Programmable” mode. When the thermostat is used in  
“Manual” control mode, all 4 of the switch positions will act like the RUN  
position, except the “AIR FILTER” position.  
UP / DOWN BUTTONS: The UP and DOWN buttons are used to adjust any item  
that can be changed by the user. Examples are the set temperatures, clock  
times, and days of the week. In many cases, an item may be flashing if it can  
currently be adjusted.  
HOLD BUTTON: This button activates and deactivates the manual Temperature  
Hold feature.  
EMER BUTTON: When in Normal Run mode, the usage of this button varies  
depending upon your specific system configuration. For heat pump systems,  
pressing this button enables your emergency heat function, which is described in  
greater detail in the OPERATING INSTRUCTIONS section. For conventional  
systems, there is no such thing as emergency heat, so this button will have no  
effect.  
NEXT BUTTON: This button is mostly used while setting items such as software  
options, and temperature program periods. When there are several items on the  
screen that can be changed, usually one of them is flashing indicating that it can  
be adjusted. Pressing the NEXT button will cycle through which item is flashing.  
18  
GeneralDetails
NameLUX TX500Ub Non Programmable Thermostat Instruction Manual
MakeLUX
LanguageEnglish
FiletypePDF (Download)
File size0.31 MB
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LUX TX500Ub Non Programmable Thermostat Instruction Manual