10
Operating the Thermostat
Using emergency heat (heat pump systems only)
Emergency heat is useful when the automatic auxiliary heat system
can’t keep up with demand. (Systems with heat pumps use “auxiliary
heat” when it’s too cold outside for the heat pump to heat the house
without help. The display indicator for this is
aux heat on.)
If the heat pump compressor that works with auxiliary heat fails, or if
the heat pump isn’t working at all, you can turn on the emergency
heat for that extra help. (You’ll know there’s a problem if the house
can’t seem to get warm when it’s very cold outside.) You want to avoid
using emergency heat, though, because it’s the most expensive
option. And, of course, if you suspect a problem with your heat pump,
call your heating and cooling dealer immediately.
Here’s how to set your thermostat to use emergency heat.
1. Press the mode button repeatedly until you see Em
heat
in the upper left of the display.
2. To turn off emergency heat, press the
mode button
again to select
heat, cool or auto.
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