Carrier 53 3 Heat Air Conditioner Manual

Owner’s Manual PROGRAMMABLE DIGITAL THERMOSTAT 53DFS250-FS Front Panel · 2 4 Mo : Am 1 COOL AUTO HEAT 5 3 7-Day Programmable 3 Occupied periods and 1 Unoccupied period Auto Changeover Large, Easy To Read Display ThermoglowTM Backlight Remote Sensor Ready Dry Contact Equipped Energy Saving Smart Fan Fan Purge, IAQ Feature Meets California Title 24 Display 7 10 4 1 6 2 1 Liquid Crystal Display with ThermoglowTM Backlight 2 Up/Down Buttons 3 Mode Button 6 SuMoTuWeThFrSa Setup unoccupied 123 : Am Start Pm Stop Locked Override Outside COOL 9 5 3 1 AUTO HEAT 1 11 1 4 ONOFF Program On 8 4 Override Button 5 Heat or Cool Indicator Heat = Red, Cool = Green 6 Temperature Sensor Bubble Fan Table of Contents FRONT PANEL DISPLAY QUICK START Set the clock and go BASIC OPERATION PROGRAMMING Occupied and Unoccupied Periods ADVANCED SETUP ABOUT ADVANCED FEATURES AND OPERATION WARRANTY Mode Indicators Selects the operation mode of the equipment.

HEAT — indicates the heat mode. COOL — indicates the air conditioning mode. AUTO — indicates the system will automatically changeover between the heat and cool modes as the temperature varies. OFF — indicates the entire system is turned off. PROGRAM ON — indicates the stored program is enabled to run. See page 2. 2 Clock with Day of the Week Indicates the current time and day. This clock is also used to program the timer periods. See page 2. 3 Room Temperature Display Indicates the current room temperature. 4 Desired Set Temperature Indicates desired room temperature(s). See page 2. 5 Override Indication Indicates the current program is currently being overridden for up to 4 hours. See pages 2 and 5. 6 Occupied or Unoccupied Indication Indicates the program number: Occupied 1, 2, 3, or Unoccupied. See pages 3 and 4. IMPORTANT: Follow Installation Instructions before proceeding. ! CAUTION: SET THERMOSTAT TO MODE “OFF ” PRIOR TO CHANGING SETTINGS IN SETUP OR RESTORING FACTORY DEFAULTS. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 535-328 Printed in U.S.A. Form OM53-3 Pg 1 11-04 Replaces: New Book 1 4 Tab 3e 2f Display 7 Setup Indication Indicates the thermostat is in the programming mode. See page 4. 8 Fan Operation Indication — 3 Speed Fan — indicates constant continuous fan operation. 3 speed indicators appear as: 1 bar = low speed 2 bars = medium speed 3 bars = high speed When Fan is not lit — indicates the fan is in Auto mode. The fan will operate at the speed which will help meet room temperature conditions. See page 4. 9 Locked Indication Locked appears after the right combination of buttons are pressed, rendering the buttons inoperative. See page 5. 10 Start/Stop Indication Start or Stop appears when programming timer functions. See page 3. 11 Outside Indication Indicates the temperature displayed is from the optional outside sensor. See page 6. Basic Operation Select Mode The HEAT setting indicates the temperature the room has to reach before the unit will turn on to heat the room.