NOTE: If the thermostat is in Occupied mode and the Over- ride button is pressed, the thermostat will go into Unoccu- pied mode immediately. The thermostat will remain in Un- occupied mode until the next Occupied start time.

Thermostat Programming Buttons Ð The ther- mostat has programming buttons which are used to change the set points of the thermostat, set the modes, and program schedules. The programming buttons are accessible from un- derneath the thermostat cover. To access the programming buttons, pull on the hinged thermostat cover. See Fig. 3. The programming buttons are: Mode, Fan, Holiday, Program, and Set Clock.

Fig. 2 Ð Thermostat Front Panel Buttons

Fig. 3 Ð Thermostat Programming Buttons

The UP ARROW and DOWN ARROW buttons are used to scroll through programming set points. The buttons are also used to answer yes or no.

KEYPAD LOCK Ð The thermostat has a keypad lockout feature which will not acknowledge front panel buttons until the lockout sequence is entered. To disable or lock the key- pad, press and hold the Override button. While holding down the Override button, press the UP and DOWN ARROW but- tons simultaneously. The ``Locked''' icon will appear on the display.

The thermostat is unlocked by performing the same pro- cedure. Press and hold the Override button. While holding down the Override button, press the Up and Down Arrow buttons simultaneously. The ``Locked'' icon will be re- moved from the display.

FAN BUTTON OPERATION Ð The Fan button selects fan operation. When the fan is set to FAN ON, the fan will run continuously for improved air circulation.

NOTE: When the thermostat is in Unoccupied mode, the fan will run only during heating or cooling operation, even if the fan is set to FAN ON, this is the energy-saving smart fan feature.

When the fan is not set to FAN ON (no icon displayed on thermostat screen), the fan will run during heating and cool- ing operation only.

MODE BUTTON OPERATION Ð The Mode button se- lects the operating mode of the thermostat. If OFF is se- lected, the thermostat will not enter Heating or Cooling mode. If HEAT is selected, the thermostat will only enter Heating mode (if the room temperature is below the heating set point). If COOL is selected, the thermostat will only enter Cooling mode (if the room temperature is above the cooling set point). If AUTO is selected, the thermostat will enter Heating or Cooling mode based on the room temperature and the heat- ing and cooling set points. If PROGRAM ON is selected, the stored schedule is enabled and the thermostat will follow the Occupied and Unoccupied schedules stored in its memory.

Auto-Changeover Ð When the thermostat mode is set to AUTO, the thermostat will provide automatic changeover from Heating to Cooling mode and Cooling to Heating mode when required. The thermostat will automatically switch to maintain the desired temperature setting. The thermostat does not need to be manually changed from heating to cooling or cooling to heating operation.

HOLIDAY MODE Ð The Holiday button places the ther- mostat into Holiday mode. During Holiday mode, the un- occupied set points are enforced. The number of days the thermostat will be in Holiday mode can be set.

Set Clock Ð The Set Clock button allows the user to change the time and day displayed on the thermostat. Press the Set Clock button to enter Set Time mode. See Fig. 4. The current time will blink on and off. Press the UP ARROW and DOWN ARROW buttons until the correct time is shown. Hold down the buttons to quickly move through the time display. The AM and PM annunciators will automatically change. To scroll through by hours only, press and hold down the fan button while pressing the UP ARROW or DOWN ARROW buttons. To ensure the schedules are properly fol- lowed, make sure that AM or PM is correct for the time cho- sen. When the correct time is shown, press the Mode button to modify the day of the week. The current day will blink on and off. Press the UP ARROW and DOWN ARROW but- tons until the correct day is shown. Press the Set Clock but- ton again to exit the Set Time mode.

Fig. 4 Ð Setting the Clock

Programming Thermostat Schedules Ð Be- fore programming the thermostat, plan the thermostat daily schedule. The schedule is divided into 7 days (Monday through Sunday). Each day can have 2 (Occupied 1, Unoccupied), 3 (Occupied 1, Occupied 2, Unoccupied), or 4 (Occupied 1, Occupied 2, Occupied 3, Unoccupied) time periods. Each occupied time period has a start time, stop time, heating set point, and cooling set point. The unoccupied time period has a heating set point and a cooling set point. The unoccupied time period is active whenever an occupied time period is not active. Fill in Table 1 on page 5 as an aid to program- ming the daily schedules.

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Carrier 33CS250-01 owner manual Thermostat Front Panel Buttons
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33CS250-01 specifications

The Carrier 33CS250-01 is an advanced air conditioning unit designed for residential and light commercial applications. Known for its efficiency and reliability, this model showcases Carrier's commitment to providing quality climate control solutions.

One of the main features of the 33CS250-01 is its high-efficiency performance. With a Seasonal Energy Efficiency Ratio (SEER) rating that meets or exceeds industry standards, this unit is designed to provide significant energy savings. The efficient operation not only helps reduce utility bills but also contributes to a lower environmental impact.

The 33CS250-01 utilizes a scroll compressor, which is known for its durability and quiet operation. This technology allows for a consistent cooling output while operating at reduced noise levels, ensuring a comfortable indoor environment without disruptive sounds. Additionally, the compressor is designed to handle varying load demands effectively, adapting to changes in outdoor temperature conditions.

In terms of construction, the unit features a corrosion-resistant finish, ensuring durability and longevity even in harsh weather conditions. With a robust design, the 33CS250-01 is built to withstand the rigors of daily operation while maintaining its aesthetic appeal.

Another standout characteristic of this model is its user-friendly controls. The unit can be integrated with smart thermostats, allowing homeowners to monitor and manage their indoor climate remotely. This feature not only enhances convenience but also promotes energy efficiency through programmable settings.

The 33CS250-01 is also equipped with a reliable air filtration system, which improves indoor air quality by capturing airborne particles and allergens. This is particularly beneficial for individuals with allergies or respiratory issues, ensuring a healthier living space.

Installation of the 33CS250-01 is straightforward, with compact dimensions that enable it to fit seamlessly in various residential settings. Carrier also offers comprehensive support and warranty options, providing peace of mind to customers after their purchase.

In summary, the Carrier 33CS250-01 is an exemplary air conditioning unit that combines efficiency, durability, and advanced technology. With its high SEER rating, quiet operation, and user-friendly features, it serves as a reliable choice for effective climate control in both homes and light commercial spaces. This model represents the innovative spirit of Carrier, making it a popular option among consumers seeking quality and performance.
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