TABLE OF CONTENTS
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COMMON TERMS & WHERE TO FIND THEM
Au x i l i a ry Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 7
Most heat pump systems re qu i re a sup p l e m e nt a l
heating sou rc e, ca lled au x i li a ry heat, to maintain you r
c o mfo rt when outdoor tempera t u res fa ll
. . . . . . . . . . . .
s i g n i f i ca nt l y. Your thermostat lets you know when
your home is being warmed with sup p l e m e ntal heat.
N OT E: For addi t i o n al energy savings opport u n i t i e s ,
ask your dealer ab out locking out auxili a ry heat at a
se l e cted outdoor tempera t u re.
S e rvice Fi lte r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 4
Your sys t e m’s air filter will re qu i re re gular cleaning to
re duce the di rt and dust in the system and you r
indoor air. The SERVICE FILTER indi cator lets you
k n ow when it’s time to clean the filt e r.
Fa n . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pg. 3
Your sys t e m’s fan can run cont i nu ously or only as
ca lled for during heating or cooling. Co nt i nu ou s
o p e ration helps with air circ ulation and cleaning.
Automatic operation provides energy savings. Pre s s
the FAN bu tton to make your choice.
TABLE OF CONTENTS
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WHAT IF…
m e a su re tempera t u res. You will need to contact you r
dealer to re pair the pro b l e m .
An E2 re a ding on the LCD display means there is
not enou gh vo ltage for the system to opera t e.
Co ntact your dealer for further info r m a t i o n .
A flashing E3 (a lternating with room tempera t u re)
i n di cates the outdoor air tempera t u re se n sor is
a b se nt or not working properly (and is needed fo r
p roper opera t i o n) .
If the outdoor air tempera t u re se n sor is abse nt, the
outdoor tempera t u re re a ding will be “--”.
The batteries are low…
If the ba tteries are low, the display will indi cate a low
ba tt e ry signal on the thermostat. Replace the ba t-
teries with two AA alk a line ba tt e r i e s .
N OT E: If the pro du ct is hard -w i red by the install e r,
the batteries will never have to be re p l a c e d .
BY Legacy Tstat HO Guide 7/28/04 12:46 PM Page 8
