WHAT IF…
AUXILIARY HEAT indicator is
displayed…
The AUXILIARY HEAT indicator appears on
the heat pump version of the Thermidistat
Control only. It is displayed when your
system is operating on auxiliary heat.
NOTE: This indicator does not reflect a prob-
lem with your system.
CLEAN FILTER indicator is displayed…
The CLEAN FILTER indicator tells you
when to clean or replace your system’s air
filter. Press the VACATION and END
buttons simultaneously after cleaning or
replacing the filter to turn off the indicator
and restart the timer.
NOTE: This indicator does not reflect a
problem with your system.
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