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TXU Energy iThermostat 1F88-300 - User Manual

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TXU Energy iThermostat
In-Home User Manual
Model: 1F88-300
7-Day Programming
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Summary

Getting Started with Your iThermostat

Programming Your iThermostat

Programming Heating and Cooling

Step-by-step guide for manually programming heating and cooling schedules, including setting temperatures and start times.

Setting Holds

Explains how to override heating or cooling programs with temporary or permanent holds.

Configuration Menu Options

Accessing the Configuration Menu

Guide on how to enter the Configuration Menu by setting the system to OFF and pressing specific buttons.

HVAC System Type

Configuration for Heat Pump or two-stage heat/cool systems, with options like MS2, SS1, HP2, HP1.

Daily Programmable Periods

Setting the number of programmable periods per day (4, 2, or 0) for flexible scheduling.

Troubleshooting Assistance Guide

iThermostat Display

Troubleshooting steps for a blank or flashing iThermostat display.

Programming

Troubleshooting common programming issues like temperature limits, disappeared programs, and incorrect timing.

Temperature display is incorrect

Steps to resolve incorrect temperature readings, including checking display mode and hold status.

The house is too warm or too cold

Diagnosing and resolving issues with house temperature being too warm or too cold.

iThermostat current setpoint does not match the display temperature

Troubleshooting when the current setpoint doesn't match the displayed temperature.

Holds

Troubleshooting problems with hold overrides not working or temporary holds disappearing.

Equipment

Troubleshooting common equipment issues such as fan not turning off, on, or heat/cool not activating.

Temporary temperature hold, UP or DOWN buttons, will not work

Resolving issues where temporary hold settings or temperature adjustment buttons are unresponsive.

Cooling will not come On

Steps to diagnose why the cooling system is not activating, checking modes, breakers, and setpoints.

TXU Energy iThermostat 1F88-300 Specifications

General IconGeneral
Model Number1F88-300
Hold FeatureYes
Filter Change IndicatorYes
TypeProgrammable
Power SourceBattery
Programming7-day programmable
Warranty1-year limited

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