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Robertshaw RS9110 Operation Manual

Table of Contents

Thermostat Operation

The thermostat features an LCD screen, a fan switch, a system switch, temperature set-point buttons, and user buttons.

1 LCD Screen: Displays current time, day, room temperature, set temperature, and system status indicators.

2 Fan Switch: Select ON for continuous fan operation or AUTO for fan operation only when the heating or cooling system is running.

3 System Switch: Select HEAT for heating mode, COOL for air conditioning mode, or OFF to turn both off.

4 Temperature Set-Point Buttons: Use the '+' or '-' buttons to adjust the desired temperature.

5 User Buttons: Used for setting up programming options.

Caution: DO NOT SWITCH SYSTEM TO COOL IF THE TEMPERATURE IS BELOW 50°F (10°C). THIS CAN DAMAGE THE AIR CONDITIONING SYSTEM AND CAUSE PERSONAL INJURY.

Thermostat Quick Reference

The LCD screen displays days of the week and time. It also shows the user-selected set-point temperature and current room temperature.

Key Indicators:

Programmable Time Periods: This thermostat has 4 programmable time periods per day (WAKE, LEAVE, RETURN, SLEEP).

Temporary Adjustment: You can temporarily change the set-point temperature using the '+' or '-' buttons. The change remains until the next programmed event (WAKE, LEAVE, RETURN, or SLEEP).

Program Schedule Hold: Pressing '+' or '-' while in program mode will display 'HOLD' and 'RUN SCHED'. This overrides the program schedule with a fixed temperature. Press 'HOLD' again to exit this mode.

To Return to Programming: Press 'RUN SCHED' to resume the program schedule.

Filter Change Reminder: The thermostat can be configured to remind you to change the air filter. When 'FILTER' is displayed, change the filter and reset the reminder by holding the second button from the top left for 3 seconds.

Battery Door Information:

To open the battery door, press the lower portion of the thermostat. Install two AAA Alkaline batteries, ensuring positive (+) ends match the positive (+) terminals in the battery compartment.

Programming

Set Time of Day and Day of Week:

  1. Press the MENU button.
  2. Press SET TIME.
  3. Use the '+' or '-' buttons to select the current day of the week.
  4. Press NEXT STEP.
  5. Use the '+' or '-' buttons to select the current hour. Note the a.m./p.m. indicator.
  6. Press NEXT STEP.
  7. Use the '+' or '-' buttons to select the current minutes.
  8. Press DONE when completed.

Custom Programming:

The thermostat supports 7 Day or 5+1+1 day programming. In 7 Day mode, each day is programmed individually. In 5+1+1 mode, Monday-Friday are programmed together, and Saturday and Sunday are programmed individually. Each day has four time periods: WAKE, LEAVE, RETURN, SLEEP.

To customize your program schedule:

  1. Select HEAT or COOL (must be programmed separately).
  2. Press MENU (or RUN SCHED if MENU is not visible).
  3. Press SET SCHED. The display will show Monday-Friday (or Monday in 7 Day mode) with the WAKE icon.
  4. Use '+' or '-' to set the WAKE time for Monday-Friday (or Monday).
  5. Press NEXT STEP.
  6. Use '+' or '-' to set the WAKE temperature for Monday-Friday (or Monday).
  7. Press NEXT STEP.
  8. Repeat steps 4-7 for the LEAVE, RETURN, and SLEEP time periods for Monday-Friday (or Monday).
  9. Repeat steps 4-8 for Saturday and Sunday for the 5+1+1 schedule, or for each day individually for the 7-day schedule.

Installer Setup Menu

Accessing the Menu:

  1. Press MENU.
  2. Press and hold TECH SET for 3 seconds.

Configuring Options: Use the '+' or '-' buttons to change settings and NEW STEP or PREV STEP to navigate between options. Press DONE to exit.

Settings Display Adjustment Options Default
Filter Change Reminder Displays 'FILT' when the filter needs changing. 'OFF' disables the feature. Adjustable from OFF to 2000 hours in 50-hour increments. Press the second button from the top left to view current runtime. OFF
Room Temperature Calibration Allows adjustment of the room temperature display. Adjustable up to 3°F above or below the factory calibration. 0
Minimum Compressor On-Time Sets the minimum run time for the compressor. Adjustable from OFF to 3, 4, or 5 minutes. The compressor will run for the selected time, even if the fan continues. OFF
Compressor Short Cycle Delay Prevents the compressor from turning on for 5 minutes after shutdown. Can be removed by selecting 'OFF'. ON
Cooling Differential Factory preset at 0.5°F. The cooling system turns on when the room temperature is 0.5°F above the set-point. Adjustable from 0.2°F to 2°F. 0.5
Heating Differential Factory preset at 0.4°F. The heating system turns on when the room temperature is 0.4°F below the set-point. Adjustable from 0.2°F to 2°F. 0.4
For C Selects Fahrenheit (°F) or Celsius (°C) display. F for Fahrenheit, C for Celsius. F
12 or 24 Hour Clock Selects the clock format. Use '+' and '-' to select 12 or 24 hour format. 12
Fan Operation Selects the fan operation type based on furnace type. GAS - GS or ELEC - EL GAS
Program Options Configures the thermostat for 7 Day, 5+1+1 day programming, or non-programmable. Use '+' and '-' to select 7d (7 Day), 5d (5+1+1), or 0d (non-programmable). 5d

Terminal Designations

Models: RS9110, Pro Series 5-1-1 Programmable Thermostat, Programmable Thermostat, Pro Series 5-1-1 Thermostat, Thermostat, RS9110 Programmable Thermostat

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