Connection Setup Of The Wi-Fi Interface; Relocation And Maintenance - Mitsubishi Electric MSZ-AY20VGK Installation Manual

4-2. Test Run
1) Insert power supply plug into the power outlet and/
or turn on the breaker.
2) Pressing the E.O. SW will perform a test run for 30
minutes. (For MSZ, pressing the switch once will
perform cooling operation and twice will perform
heating operation.) If the left lamp of the operation
indicator blinks every 0.5 seconds, inspect the
indoor/outdoor unit connecting wire (A) for mis-
wiring. After the test run, emergency mode (set
temperature 24ºC) will start.
3) To stop operation, press the E.O. SW several times
until all LED lamps turn off. Refer to operating
instructions for details.
Note:
When power (circuit breaker) is turned on, the horizontal vanes automatically
move to the normal position.
Checking the remote (infrared) signal reception
Press the off/on button on the remote controller (3) and check that an elec-
tronic sound is heard from the indoor unit. Press the off/on button again to turn
the air conditioner off.
• Once the compressor stops, the restart preventive device operates so the
compressor will not operate for 3 minutes to protect the air conditioner.

5. Connection Setup of the Wi-Fi Interface

This product is equipped with the Wi-Fi Interface as standard.
Refer to the SETUP QUICK REFERENCE GUIDE and OPERATING INSTRUCTIONS provided with the indoor unit for connection with the router.
A label for Wi-Fi Interface setting, is attached to the unit.
Keep it with the OPERATING INSTRUCTIONS after setting.

6. Relocation and Maintenance

6-1. Removing and Installing the Panel Assembly
Removal procedure
1) Remove the 2 screws which fix the panel
assembly.
2) Remove the panel assembly. Be sure to
remove its bottom end first.
Installation procedure
1) Install the panel assembly following the re-
moval procedure in reverse.
2) Be sure to press the positions as indicated
by the arrows in order to attach the assembly
completely to the unit.
6-2. Removing the Indoor Unit
Remove the bottom of the indoor unit from the
installation plate.
When releasing the corner part, release both left
and right bottom corner part of indoor unit and pull
it downward and forward as shown in the figure on
the right.
4-3. Auto Restart Function
This product is equipped with an auto restart function. When the power
supply is stopped during operation, such as during blackouts, the function
automatically starts operation 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.
Emergency operation
To the user
switch (E.O. SW)
• After installing the unit, make sure to explain the user about auto restart
• If auto restart function is unnecessary, it can be deactivated. Consult the
4-4. Explanation to the User
• Using the OPERATING INSTRUCTIONS, explain to the user how to use the
• Recommend the user to read the OPERATING INSTRUCTIONS carefully.
6-3. 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
atmosphere.
1) Connect the gauge manifold valve to the service port of the stop valve on the
2) Fully close the stop valve on the liquid pipe side of the outdoor unit.
1 2
3) Close the stop valve on the gas pipe side of the outdoor unit almost completely
2
1
2
4) Start the emergency cooling operation.
5) Fully close the stop valve on the gas pipe side of the outdoor unit when the
6) Stop the emergency cooling operation.
When the refrigeration circuit has a leak, do not execute pump down
with the compressor.
When pumping down the refrigerant, stop the compressor before
disconnecting the refrigerant pipes. The compressor may burst if air
etc. get into it.
SW or the remote controller before turning off the power supply. Not doing
so will cause the unit to start operation automatically when power supply is
resumed.
function.
service representative to deactivate the function. Refer to the service manual
for details.
air conditioner (how to use the remote controller, how to remove the air filters,
how to remove or put the remote controller in the remote controller holder,
how to clean, precautions for operation, etc.).
gas pipe side of the outdoor unit.
so that it can be easily closed fully when the pressure gauge shows 0 MPa
(Gauge) (0 kgf/cm ).
2
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 sup-
ply plug and/or turn on the breaker, and then press the E.O. SW once. (The
emergency cooling operation can be performed continuously for up to 30
minutes.)
pressure gauge shows 0.05 to 0 MPa (Gauge) (approx. 0.5 to 0 kgf/cm
Press the E.O. SW several times until all LED lamps turn off. Refer to operating
instructions for details.
Warning
EN
).
2
EN-8