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4=2. TEST RUN
1) Insert power supply plug into the power outlet and/or
turn on the breaker.
2) Press the E.O. SW once. Test run will be performed
for 30 minutes. If the left operation indicator light blinks
every 0.5 seconds, inspect the indoor/outdoor
unit con-
necting wire (A). After the test run, emergency
COOL
mode (75°F [24°C] COOL) will start.
3) To stop operation,
press the E.O. SW several
times
until all LED lamps turn off. Refer to operating
instruc-
tions for details.
/
Emergency operation switch
Checking the remote (infrared) signal reception
(E.O. SW)
Press the ON/OFF button on the remote controller and listen for an audible indicator
from the indoor unit. Press the ON/OFF button again to turn the air conditioner
off.
• Once the compressor
stops, the restart preventive
device operates
so the compres-
sor will not operate for 3 minutes to protect the air conditioner.
4-3. AUTO RESTART FUNCTION
This product is equipped with an auto restart function. When the power supply is cut off
during operation, such as during blackouts, the function automatically
starts opera-
tion in the previous setting once the power supply is resumed. (Refer to the operating
instructions for details.)
Caution:
• After test run or remote signal
reception
check, turn off the unit with the
E.O. SW or the remote controller
before turning off the power supply. If this
procedure is not performed,
the unit will automatically
begin operation when
power supply is resumed.
To the user
• After installing the unit, explain to the user about auto restart function.
If auto restart function is unnecessary,
it can be deactivated.
Consult the
service representative
to deactivate
the function.
Refer to the service man-
ual for details.
4-4. EXPLANATION TO THE USER
• Using the OPERATING
INSTRUCTIONS,
explain to the user how to use the
air conditioner
(the remote controller,
removing the air filters, placing or remov-
ing the remote controller from the remote controller
holder, cleaning methods,
precautions for operation, etc.)
• Recommend
that the user read the OPERATING
INSTRUCTIONS
carefully.
54.
REMOVING
AND INSTALLING
THE PANEL ASSEMBLY
Removal
procedure
(Fig. 1, 2)
t) Remove the three screws that attach the panel assembly.
2) Open the front panel.
3) Remove the two screws that attach the panel assembly.
4) Remove the panel assembly.
Be sure to remove its bottom end first.
1
Fig. 1
4
Fig. 2
installation
procedure
(Fig. 3, 4)
t) Point the horizontal vane slightly downward.
2) Attach the bottom of the panel assembly
under the horizontal vane.
3) Fit in the top of the panel assembly.
4) Fit in the bottom of the panel assembly and tighten it using screws.
5) Push the section of the front panel marked by the arrows to close the front panel se-
curely.
Fig. 3
Horizontal vane Fig. 4
5=2. REMOVING THE INDOOR UNIT
Remove
the bottom
of the indoor unit from the installation
plate. (Fig. 1, 2)
• Remove the panel assembly.
(Refer to 5-1)
•
Insert flat screwdrivers
into the square holes at the left and right bottom of the indoor
unit and push them up; the bottom of the indoor unit goes down and the hooks are
released.
"1 Remove the screw.
• 2 Remove the tab of corner box from the indoor unit, and pull the corner box.
• 3 Pull the indoor unit to remove.
5-3. PUMPING DOWN
When relocating or disposing of the air conditioner, pump down the system following the
procedure below so that refrigerant is not released into the atmosphere.
1) 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
Ibf/in. 2 [0 kgf/cm2]).
4) Start the emergency
COOL operation.
To start the emergency
operation
in COOL mode, disconnect
the power supply plug
and/or turn off the breaker. After 15 seconds, connect the power supply plug and/or
turn on the breaker, and then press the E.O. SW once. (The emergency
COOL op-
eration 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. 7.25 to 0 Ibf/in 2 [0.5 to 0 kgf/cm2]).
6) Stop the emergency
COOL operation.
To stop 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.
Corner box
*3
_1
.2
_
Square hole
Fig. 1
Fig. 2
MITSUBISHI ELECTRIC CORPORATION
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI,
CHIYODA-KU,
TOKYO
100-8310, JAPAN
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