Robertshaw RS9110 Operation Manual page 9

Filter Change Reminder
The thermostat can be configured to remind you when the air filter needs to be changed. The
filter change reminder can be adjusted to up to 2000 hours in 50 hour increments.
If the installer configured the thermostat 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 holding down the second button from the top
left side of the thermostat for 3 seconds.
Hold down button for
3 seconds to reset
filter reminder.
THERMOSTAT QUICK REFERENCE
Menu
FAN
ON AUTO
Mon
PM
Room
Set At
+1
SLEEP
SYSTEM
COOL OFF HEAT
7