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The
battery
icon
is displayed
The battery
icon
appears
on the display
only
when
the battery
starts
to lose power.
Replace
it when
one-third
of the
icon
is black.
If your
thermostat
is battery
powered
and you wait until the icon is just a silhouette
with
no black bars,
you will
slowly
lose thermostat
functions
until it doesn't
work
at all.
"Aux heat on" is displayed
(heat pump
systems
only)
Aux heat on is auxiliary
heat. It applies only to the heat pump version.
If it
is on, you will see aux heat on. When it is displayed,
it means the system
has determined
that it's too cold outside
for your heat pump to heat the
house without
help, so it's getting help from the electric
heaters.
This hap-
pens automatically.
"Em
heat"
is displayed
(heat
pump
systems
only)
Em heat
is the display
term for emergency
heat and applies
only
to the heat pump
version.
You
have
to
turn
on
emergency
heat
manually
-
it doesn't
happen
automatically
- so if you
see
Em
heat
on the display,
it means
somebody
has
turned
it on.
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