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Filter Change 

Reminder

This setting will flash 

FILT

 in 

the display after the elapsed 
run time to remind the user 
to change the filter. The 

OFF

 

setting will disable this feature.

  Next step 

  Prev step

The filter change reminder can 
be adjusted from 

OFF

 to 2000 

hours in 50 hour increments. 

Press the second button from the 

top left side of the thermostat to 

display the current filter elapsed 

run time.

OFF

Room 

Temperature 

Calibration

This setting allows the installer 
to change the calibration of the 
room temperature display so 
that, for example, the thermostat 
would read 72°F instead of 70°F. 

Next step 

Prev step

The room temperature display 

can be adjusted to read up to 

3° above or below the factory 

calibrated temperature. 

0

Minimum 

Compressor 

On-Time

The installer can select the 
minimum run time for the 
compressor to help protect the 
compressor from short-cycling.

  Next step 

  Prev step

The minimum compressor run 
time can be adjusted from 

OFF

 

to 3, 4, or 5 minutes. If 3, 4, or 5 

is selected, the compressor will 

run for at least the selected time 

before turning off (although the 

fan may continue to run for a 

short time).  

OFF

Settings Display 

Adjustment Options  Default

INSTALLER SETUP MENU

12

Summary of Contents for RS9210

Page 1: ...RS9210 Operation Manual...

Page 2: ......

Page 3: ...Reference 4 7 Programming 8 10 Installer Setup Menu 11 15 Terminal Designations 16 DO NOT SWITCH SYSTEM TO COOL IF THE TEMPERATURE IS BELOW 50 F 10 C THIS CAN DAMAGE THE AIR CONDITIONING SYSTEM AND C...

Page 4: ...THERMOSTAT OPERATION 1 2 3 4 5 LCD Screen Temperature Set Point Buttons User Buttons Fan Switch System Switch Mon Room Set At Menu SLEEP FAN ON AUTO HEAT COOL OFF EMH 2...

Page 5: ...Selects HEAT or COOL for your HVAC system Selecting HEAT turns on the heat mode Selecting COOL turns on the cool mode Selecting OFF turns both heating and cooling off Selecting EMH for heat pumps wit...

Page 6: ...den Low Battery Indicator Replace batteries when indicator is shown System Operation Indicators The or icon will display when the COOL HEAT or fan is on NOTE If these icons are flashing there is a 5 m...

Page 7: ...es with positive battery terminals in the battery compartment Press the lower portion of the thermostat to open the easy access battery door THERMOSTAT QUICK REFERENCE 5 Caution When the battery icon...

Page 8: ...e will then resume Program Schedule Hold The thermostat will display HOLD and RUN SCHED on the left of the screen when you press either or You may hold the temperature at a fixed temperature set point...

Page 9: ...ermostat to issue this reminder FILTER will be displayed when it is time to change the air filter When FILTER is displayed you should change the air filter and reset the Filter Change Reminder by hold...

Page 10: ...se or to select the current day of the week 4 Press NEXT STEP 5 The current hour will be flashing Use or to select the current hour Note the correct a m or p m indicator is selected 6 Press NEXT STEP...

Page 11: ...o customize your program schedule 1 Select HEAT or COOL Note Heat and cool need to be programmed separately 2 Press MENU If menu does not appear first press RUN SCHED 3 Press SET SCHED Note Monday Fri...

Page 12: ...the SLEEP time period for Monday Friday or Monday if in 7 Day mode 9 Repeat steps 4 through 8 for the Saturday WAKE LEAVE RETURN and SLEEP time periods and then again for the Sunday WAKE LEAVE RETURN...

Page 13: ...s 3 Configure the installer options as desired using the table 4 Use the or to change settings and the NEW STEP or PREV STEP to move from one option to another Note Only press DONE key when you want t...

Page 14: ...the room temperature display so that for example the thermostat would read 72 F instead of 70 F Next step Prev step The room temperature display can be adjusted to read up to 3 above or below the fact...

Page 15: ...hat whenever the room temperature heats by 0 5 from the temperature setting the cooling system will turn on If the cooling system turns on too often increase the temperature differential Next step Pre...

Page 16: ...ius display Next step Prev step F for Fahrenheit C for Celsius F 12 or 24 Hour Clock Select a 12 or 24 hour clock setting Next step Prev step Use and to select 12 or 24 hour clock 12 Fan Operation Sel...

Page 17: ...all seven days will need to be programmed individually If 5 1 1 programming is selected in Set Time Monday Friday will be programmed together and Saturday and Sunday will need to be programmed individ...

Page 18: ...Common wire from system transformer B Heat pump reversing valve energized in heating W E Emergency heat relay Note In many heat pump systems without an emergency heat relay a jumper can be installed b...

Page 19: ......

Page 20: ...800 445 8299 HVACCustomerService robertshaw com www robertshaw com 352 00301 001 6 Year Limited Warranty Use Phone to Scan for Warranty Info 352 00312 001 Rev B 2021 Robertshaw Controls Company Rober...

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