Programming Filter Monitor; Checking Filter Monitor; Resetting Filter Monitor - Robertshaw 9720 User Manual

PROGRAMMING

Programming Filter Monitor

The filter monitor keeps track of the total time the system fan has been in operation during the heating or cooling modes.
The "Check Filter" message appears when the hours of fan operation equals your programmed filter monitor hours setting.
1. Press SET and FILTER buttons at the same time. Release both
buttons.The display will show:
2. Press ∨ or ∧ button to change filter hour setting (between 0 to 960
in 60 hour increments). The default is 240 hours (based on
average 30 day month at 8 hours per day fan operation). A
setting of 0 hours disables this feature.
3. Press SET button to save setting.

Checking Filter Monitor

1. Press FILTER button. The current hours of fan operation since
last reset are shown for reference.
2. The main display will return after a few seconds.

Resetting Filter Monitor

1. When filter needs to be serviced, "Check Filter" will show in main
display indicating that the hours of fan operation have met your
programmed filter servicing interval.
2. After servicing the filter, repeat steps 1-3 to reset/reprogram your filter monitor.
SET
CHECK
FILTER
FILTER
SET
FILTER
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