Programmable Thermostat
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What is the air filter reminder, why is it flashing?

Programmable Thermostat TX1500U TX1500Uc TX500U TX500Uc TX700U TX700Uc TX9100U TX9100Uc
When you see the word “Filter” flashing in the display of the thermostat, it is simply a reminder to change the filter in the blower of your heating\cooling system (totally separate from thermostat).   This feature does not affect the operation of thermostat in any way.   There is a...
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How do I switch between 12 hr and 24 hr time on my thermostat?

Programmable Thermostat TX1500Uc TX500Uc TX700Uc TX9100Uc
To change the Temperature Scale, open the front door on the thermostat. Setup options for how the thermostat will function are performed using a menu on the display screen. To Access the Setup Menu  :      1. Move the System Mode temp switch to the OFF position,      2....
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How do I switch between 12 hr and 24 hr time on my thermostat?

Programmable Thermostat TX1500Uc TX500Uc TX700Uc TX9100Uc
The following steps will allow you to switch between Standard and Military time:   Setup options are performed using a menu on the display screen. To  Access the Setup Menu: Move  the System  Mode  Temp switch into the OFF position. Move slide switch to RUN position. hold down the EMER...
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