Robertshaw RS8210 Operation Manual page 8

THERMOSTAT QUICK REFERENCE
Filter Change Reminder
If your HVAC contractor has configured the thermostat to remind you
when the air filter needs to be changed, you will see FILTER in the
display when your air filter needs to be changed.
Resetting the filter change reminder: When FILTER reminder is displayed,
you should change your air filter and reset the reminder by holding down the
second button from the top left side of the thermostat for 3 seconds.
Hold down 3 seconds, to
reset filter reminder.
6
Mon
Room
Set At
+1
Menu
SLEEP
FAN
OFF
ON AUTO
COOL
PM
HEAT
EHM