Heart Interface HF12-1200 - Remote Control; Troubleshooting

I
are mounted
on circuit
boards
which
are in
turn mounted
to
the
sides
of the
chassis.
In
this
way
the
entire heavy-gauge
chassis is
used
as
a
heat
sink.
The
control
circuit
board
is
mounted
to
the front
panel.
The
switch
and
LED
indicaror
lights
are
mounted
onto
the
main
control
board. The
control
board
sends
o
rignuf
to
the
powir
modules
turning
tle FETs
off and
on.
Circuitry
on the
control
board
insures
tf;ut
tf,e f.eqirency
is_keptstable
lt
60 Hz
and,.by
constantly
monitoring
rhe
output,
the
voltage
is
regulited
at
120
volts RMS.
Also
contained
on the
main
circuit
6oard
are
ttre
prorectiJn
circuits.
REMOTE
CONTROL
OPERAilNG
PANEL
A flush
mount
remote-
conffol
panel
with
a
20
foot
wiring
harness
is
available
for
the
HF12-_1200U,
please
specify
the
RP-9.
This plugs
into
the
9
pin"connecror
on
the front panel
of the
Heart.
.
-
Jo
operate
the
unit
with
the remote
control you
must leave
the
power
switch
on
the Heart
itself
in
the OFF
position.
TROUBLESHOOTING
.
^Mostproblems
will fall
into
one
of three
categories.
If
a
problem
occurs
please
refer
to
the following
guidelines.
LOADS
BEHAYING
ABNORMALLY:
Most loads
will
run
on
the-Heart
just
like
they
do on
utility power.
Occasionally
certain
inductive
loads will
emit
a slightly
louder
hum
than
normal.
Thls
is
due
to ttre
Heart
ourpur
YaYe
shape. If
the
problem
is
unacceptable
there
are
sine
wave filters
available.
Contact
you.
dealer
for
more information.
If
a small load
will not
start
and run
it
may
be
related
to
the load
demand
circuit.
Turn
on an incandescent
light
bulb
of
at
least
15
waits
and
rry
the
load
again.
Digital
clocks
will
ordinarily
keep good
time
on the
Heart
but
occasionally
we
encounter
one
that
runs
2
or
3 times
faster
than normal.
This
probiem
is
due
ro rhe
modifieJ
;i";;;;;
output.
Itis.possible
thatthe
start-upof
alargeinducrive
load
such
as
a
U3
horsepowerinduction
motor
will interfere
withthe
operation
of sensitive
electronics
such
as .o*piiir.
What
may
happen
is
that
whiie
the
Heart
is
surging_to
start
the
big motor,
the compur"i
*iii"rorh.
If you
will
be
stafln$
a motor
which
requires
the full
currenithat
the Heart
is
capable
of delivering,
such
as
a
1/3
horsepower
induction
motor,
do
not
operute
sensitive
etectronics
at
the
same
tlme.
Microwave
ovens
depend
on high
peak.AC
voltage
to
cook
at full
speed.
The peak
AC
voltage
oulput
of
the Hgart
is
dependenionrhe
input
b-attery
voltage.
frre
t
iglt"r
thb
banery
yglage
the
faster
the
microwave
will
cook.
Do
noibe
surpriied
if
y6ur
microriuu,
oven
takes
!57o 1o.25voIo.nget
to cook
when
operated
with
the
Hearr.
Cooking
rpi"O
*ifr
n" increased
by
raising
the
battery
voltage.
11