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LUX TX500Ub Non Programmable Thermostat Instruction Manual

characteristics, you should refer to your heat pump literature to determine when  
to disable the heat pump and run in Emergency Heat mode. In general for most  
heat pump systems, use Emergency Heat mode whenever the outside  
temperature is less than 32°F (0°C) degrees.  
LCD DISPLAY BACKLIGHT: The display screen is lighted to assist viewing at  
nighttime, or in locations with low light levels. A press of any button on the front  
panel will light the display for approximately 10 seconds. Any button presses  
that occur while the light is on will reset the 10-second timer, causing the screen  
to remain illuminated for an additional 10 seconds.  
TEMPERATURE OVERRIDE: While in Program RUN mode, the set temperature can  
be temporarily changed by pressing UP or DOWN. The set temperature will return  
to the programmed value stored in memory when the start time of the next  
upcoming program period is reached (Morn, Day, Eve, Nite). While a Temporary  
Override is in effect, the word “OVERRIDE” will be shown in the display screen.  
An Override may be cancelled moving the mode switch to OFF, then back to HEAT  
or COOL.  
TEMPERATURE HOLD: A Temperature Hold is used for maintaining a fixed set  
temperature. Once a Hold is initiated, the thermostat will maintain the set  
temperature indefinitely. A Hold may be used for days, weeks, or even months at  
a time, as long as the thermostat has adequate power. To enter Hold mode:  
press the HOLD button one time and the word “HOLD” will appear in the display.  
To cancel a Hold, press the HOLD button one more time. If a complete power  
failure occurs during a Temperature Hold, the thermostat will continue to remain  
in Hold mode even after the power comes back on. NOTE: If you plan to leave  
the thermostat in Hold mode for an extended duration (unattended), it is  
advisable to install new Energizer® or DURACELL® "AA" size alkaline batteries  
prior to leaving to ensure reliable operation of your heating and cooling system.  
STATIC NOTICE: This thermostat is protected against normal static electric  
discharges, however to minimize the risk of damaging the unit in extremely dry  
weather, please touch a grounded metal object before touching your thermostat.  
22  
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