En-7
4-6. TEST RUN
•
Test
runs
of
the
indoor
units
should
be
performed
individually.
See
the
installation
manual
coming
with
the
indoor
unit,
and
make
sure
all
the
units
oper-
ate
properly.
•
If
the
test
run
with
all
the
units
is
performed
at
once,
possible
erroneous
connections
of
the
refrigerant
pipes
and
the
indoor/outdoor
unit
connecting
wires
cannot
be
detected.
Thus,
be
sure
to
perform
the
test
run
one
by
one.
About the restart protective mechanism
Once
the
compressor
stops,
the
restart
preventive
device
operates
so
the
compressor
will
not
operate
for
3
minutes
to
protect
the
air
conditioner.
Wiring/piping correction function
This
unit
has
a
wiring/piping
correction
function
which
corrects
wiring
and
piping
combination.
When
there
is
possibility
of
incorrect
wiring
and
piping
combi-
nation, and confirming the combination is difficult, use this function to detect and correct the combination by following the procedures bel .
Make
sure
that
the
following
is
done.
•
Power
is
supplied
to
the
unit.
•
Stop
valves
are
open.
Note:
During
detection,
the
operation
of
the
indoor
unit
is
controlled
by
the
outdoor
unit.
During
detection,
the
indoor
unit
automatically
stops
operation.
This
is
not
a
malfunction.
Procedure
Press
the
piping/wiring
correction
switch
(SW87
)
minute
or
more
after
turning
on
the
power
supply.
•
Correction
completes
in
0
to
5
minutes.
When
the
correction
is
completed,
its
result
is
shown
by
LED
indication.
Details
are
described
in
the
following
table.
•
To
cancel
this
function
during
its
operation,
press
the
piping/wiring
correction
switch
(SW87
)
again.
•
When
the
correction
completed
without
error,
do
not
press
the
piping/wiring
correction
switch
(SW87
)
again.
When
the
result
was
“cannot
be
corrected”,
press
the
piping/wiring
correction
switch
(SW871) again to cancel this function. Then, confirm the wiring and piping combination
in
a
conventional
manner
by
operating
the
indoor
units
one
by
one.
•
The
operation
is
done
while
the
power
is
supplied.
Make
sure
not
to
contact
parts
other
than
the
switch,
including
the
P.C.
board.
This
may
cause
electric
shock
or
burn
by
hot
parts
and
live
parts
around
the
switch.
Contacting
the
live
parts
may
cause
P.C.
board
damage.
•
To
prevent
electronic
control
P.C.
board
damage,
make
sure
to
perform
static
elimi-
nation
before
operating
this
function.
•
This
function
does
not
operate
when
the
outside
temperature
is
0°C
or
below.
LED indication during detection:
LED
(Red)
LED2
(Yellow)
LED3
(Green)
Lighted
Lighted
Once
Result of piping/wiring correction function
LED
(Red)
LED2
(Yellow)
LED3
(Green)
Result
Lighted Not
lighted Lighted
Completed
(Problem
corrected
or
normal)
Once
Once
Once
Not
completed
(Detection
failed)
Other
indications
Refer
to
“SAFETY
PRE-
CAUTIONS
WHEN
LED
FLASHES”
located
behind
the
service
panel.
5. RELOCATION AND MAINTENANCE
5-1. PUMPING DOWN
When
relocating
or
disposing
of
the
air
conditioner,
pump
down
the
system
following
the
procedure
below
so
that
no
refrigerant
is
released
into
the
atmos-
phere.
)
Connect
the
gauge
manifold
valve
to
the
service
port
of
the
stop
valve
on
the
gas
pipe
side
of
the
outdoor
unit.
2)
Fully
close
the
stop
valve
on
the
liquid
pipe
side
of
the
outdoor
unit.
3)
Close
the
stop
valve
on
the
gas
pipe
side
of
the
outdoor
unit
almost
completely
so
that
it
can
be
easily
closed
fully
when
the
pressure
gauge
shows
0
MPa
[Gauge]
(0
kgf/cm
2
).
4)
Start
the
emergency
COOL
operation
on
all
the
indoor
units.
To
start
the
emergency
operation
in
COOL
mode,
disconnect
the
power
supply
plug
and/or
turn
off
the
breaker.
After
5
seconds,
connect
the
power
supply
plug
and/or
turn
on
the
breaker,
and
then
press
the
E.O.
SW
once.
(The
emergency
COOL
operation
can
be
performed
continuously
for
up
to
30
minutes.)
5)
Fully
close
the
stop
valve
on
the
gas
pipe
side
of
the
outdoor
unit
when
the
pressure
gauge
shows
0.05
to
0
MPa
[Gauge]
(approx.
0.5
to
0
kgf/cm
2
).
6)
Stop
the
emergency
COOL
operation.
Press
the
E.O.
SW
several
times
until
all
LED
lamps
turn
off.
Refer
to
operating
instructions
for
details
.
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.
WARNING
4-7. EXPLANATION TO THE USER
• Using the OPERATING INSTRUCTIONS, explain to the user how to use the air conditioner (how to use the remote controller, how to remove the air fi -
ters,
how
to
remove
or
put
the
remote
controller
in
the
remote
controller
holder,
how
to
clean,
precautions
for
operation,
etc.).
•
Recommend
the
user
to
read
the
OPERATING
INSTRUCTIONS
carefully.
JG79A662H01_en.indd 7
2012/09/24 (月) 午後 7:00:11
