Manual 2100-725C
Page
31 of 39
Dirty Filter Switch
1. Disconnect all power to the unit. Remove control
panel outer cover and upper front panel.
2. The dirty filter switch is located on top of the filter
partition between the blower wheels (see Figure
43). The dirty filter indicator light and reset switch
is located on the right side of the filter access
opening above the control panel. Remove the cover
on the dirty filter switch and ensure the knob is set
at 0.4" W.C. (see Figure 44 on page 32). This is
only a recommended starting point prior to making
switch adjustments. Switch setting is highly
dependent on filter type used, blower speed, unit
ducting and other unit installation characteristics.
See
Dirty Filter Switch Adjustment
for instructions
on how to make proper switch adjustments.
3. Re-install upper front panel.
Dirty Filter Switch Adjustment
1. Apply power to the unit.
2. Turn the unit indoor blower on (energize R-G on low
voltage terminal board).
FIGURE 43
Dirty Filter Switch and Dirty Filter Indicator Light/Reset Switch
Dirty Filter Switch
Dirty Filter Indicator Light
and Reset Swtitch
