TXU Energy iThermostat 1F88-300, Руководство пользователя для домашнего использования

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TXU Energy iThermostat In-Home User Manual
Configuration Menu Options
1 2
Cycle Selection Feature
The factory default setting is FA (fast cycle), which cycles the 1
st
stage at approximately
1.2°F and the 2nd stage at 0.75°F. If you prefer slow cycle, press the temperature key to
change to SL (slow cycle). With this setting, the 1
st
stage and the 2
nd
stage are cycled at
1.5°F and 1.2°F, respectively.
Compressor Lockout Feature
The default setting for this menu item is CL OFF. Selecting CL ON causes the thermostat
to wait 5 minutes before turning on the compressor if the heating and cooling system
loses power. It will also wait 5 minutes minimum between cooling and heating cycles.
This is intended to help protect the compressor from short cycling. Some newer
compressors already have a time delay built in and do not require this feature. Your
compressor manufacturer can tell you if the lockout feature is already present in their
system. When the thermostat compressor time delay occurs, it will flash the set point for
about five minutes.
Backlight Display Feature
The display backlight improves display contrast for better visibility in low lighting
conditions. When the "C" terminal is powered, select backlight CdL ON (Default setting)
to keep the light On continuously. Select backlight OFF to keep the light on momentarily
after any key is pressed. When the C terminal is not powered, the light will be on
momentarily after any key is pressed, regardless of whether the backlight is ON or OFF.
Second Stage Feature
In the run mode, if the temperature setpoint is manually raised by 3°F (2°C) or more
above the actual temperature with the up arrow button, and the fast second stage
feature is enabled (FA ON, Default setting), the second stage will energize immediately.
With FA OFF, second stage will not energize until the temperature setpoint is 1°F or
more above actual temperature for more than ten minutes.
Filter Replacement Feature
The thermostat will display "FLTR" after a set time of operation. This is a reminder to
change or clean your air filter. This time can be set from 0 (Default setting) to 1950
hours in 50 hour increments. A recommended value to use is 200 hours. A selection of
000 will cancel this feature.
When "FLTR" is displayed, you can clear it by pressing HOLD and RUN at the same
time. This resets the timer and starts counting the hours until the next filter change.
Contact your HVAC system manufacturer for a specific replacement/maintenance
interval.