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General| Brand | CTC Union |
|---|---|
| Model | 43558 |
| Category | Thermostat |
| Language | English |
Expresses congratulations on purchasing the thermostat and highlights its benefits.
Section to record thermostat model, serial number, and purchase details.
Provides essential installation and setup information before proceeding.
Explains the 3.5-minute delay to prevent compressor damage from rapid cycling.
Details the thermostat's displayable and programmable temperature limits.
Describes the gradual temperature recovery from energy-saving modes.
Covers 24V AC operation, power loss impact, and battery warnings.
Details the alpha-numeric display and INDIGLO® Night-Light feature.
Explains features for tracking system usage and filter status.
Describes the function of various keys like System, Day/Time, and Fan.
Details keys for programming, vacation/hold, and option menu access.
Lists the necessary tools and materials for thermostat installation.
Explains the purpose and settings of various system selector switches.
Details the HG/HE switch for gas/oil versus electric furnaces.
Explains how to enable or disable the low battery warning indicator.
Provides instructions and cautions for removing the existing thermostat.
Guides on labeling wires before disconnecting from the old thermostat.
Covers terminal descriptions and wiring for optional remote sensors.
Step-by-step guide for attaching the wallplate and thermostat body.
Details on connecting wires and securing the thermostat cover.
How to access and navigate the thermostat's option menu.
Settings for weighting local and remote sensor temperature inputs.
Options for selecting Fahrenheit/Celsius and 12/24 hour clock formats.
Adjusting span settings for cycle times and configuring auto recovery.
Step-by-step guide for setting the current time and day.
Overview of programmable setbacks and energy savings benefits.
Template for planning custom heating and cooling program schedules.
Guides for entering and modifying program times and temperatures.
Instructions for setting separate programs for weekdays and weekends.
Procedure for programming each day of the week individually.
Method for setting a single program schedule for all seven days.
Customizing fan operation and the number of programs per day.
How to check the entered program schedules for accuracy.
Explains the ON, OFF, and Emergency Heat modes via the power switch.
How to select system modes (Heat, Cool, Auto) and fan settings.
Interpreting the LED lights indicating system stage and status.
Details on activating and using the Emergency Heat function.
How to temporarily change temperature settings without altering programs.
How to hold a specific temperature for an extended period.
Setting a fixed temperature for a specified number of days.
How the thermostat automatically switches between heating and cooling.
Quickly overriding energy-saving programs for days at home.
Measuring and displaying system heating and cooling run times.
Tracking filter usage time to prompt cleaning or replacement.
Modifying span settings to adjust system cycle times.
How Auto Recovery prepares for comfort settings before scheduled times.
How to lock or unlock the thermostat's keypad to prevent changes.
Details on the display backlight and using optional remote sensors.
Viewing measured temperatures from local and remote sensors.
Explains operation based on 24V AC supply and effects of power loss.
Notification process for low battery levels and replacement timing.
What happens when the thermostat enters error mode and troubleshooting steps.
Solutions for scrambled display, no display, and program setting problems.
Troubleshooting heating/cooling not turning on/off and erratic display issues.
Addressing persistent 'HI', 'LO', or 'Error' messages after reset.
Diagrams for connecting a heat pump system to the thermostat.
Diagrams for connecting multi-stage heating and cooling systems.
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