Installation guide
ae,
mm
DPLS1
Drain
Panel
Level
Sensor/Control
GA
&
Di
A
MONDBACK
Protected
under
one
or
more
patents
©
2011
Mitsubishi
Electric
&
Electronics
USA,
Inc.
UL
®
Typical
Installation
-
example:
Wall
Mount
Indoor
Unit
-
MS/MSY/MSZ/PKA/PKFY:
1.
2.
3.
Remove
front
cover
of
indoor
unit
in
order
to
expose
the
coil
and
the
control
circuit
area
of
the
unit
(Fig
2).
The
disassembly
of
the
front
cover,
air
filters,
and
possibly
electrical
shields
will
vary
according
to
style
of
indoor
unit
installed.
See
the
Mitsubishi
Electric's
Technical
Manual
for
detailed
disassembly
if
necessary.
THERMISTOR
RAIN
PAN
9
«CONTROL
BOX
sf
Fig
2:
Typical
indoor
unit
with
cover
removed
Locate
the
corresponding
connector
(see
Table
1)
on
the
printed control
circuit
board
and,
remove
the
connector
of
the
thermistor
(Fig
4).
Plug
female
connector
of
the
Wire
Harness
into
the
printed
circuit
board,
and
plug
the
male
connector
on
the
opposite
end
into
the
thermistor
connector
(Fig
5).
THERMISTOR
CONNECTION
TO
PRINTED
CIRCUIT
BOARD
MAY
BE
UNDER
METAL
COVER.
OR
WITHIN
PLASTIC
j
HOUSING
OF
INDOOR
UNIT
FRONT
CONTROL
PANEL
Fig
3
Fig
4
Fig
5
Determine
the
best
location
for
the
DPLS1
Control
Box:
Using
the
double-sided
tape,
mount
the
Control
Box
in
a
location
inside
the
indoor
unit
that
will
allow
clearance
for
the
cover
to
be
reassembled
(Fig
6).
MOUNT
CONTROL
BOX
IN
AN
AREA
WHERE
THE
FRONT
COVER
WILL
NOT
INTERFERE
|WHEN
REASSEMBLED.
Fig
6
Reassemble
any
covers
that
were
removed
during
the
installation.
Test
the
DPLS1:
Reconnect
power
to
the
indoor
unit.
Use
extreme
caution,
the
DPLS1
is
a
low
voltage
device
however;
do
not
make
contact
with
any
high
voltages
on
the
indoor
unit
during
testing.
Turn
unit
on
and
set
cooling
thermostat
to
lowest
temperature
setting.
Make
sure
to
restore
power
to
the
outdoor
unit
before
performing
the
test
in
step
8.
Using
a
screwdriver
or
other
metallic
object,
carefully
make
a
connection
between
the
two
pins
on
the
Water
Sensor
(Fig
7).
Indoor
unit
should
shut
down
after
a
short
delay.