Purging Procedures, Leak Test, And Test Run; Pumping Down - Mitsubishi Electric MFZ-KA09NA Notice D'installation

2-12. INDOOR UNIT INSTALLATION
• Hook the top of the indoor unit on the indoor unit mounting bracket (7).
• Use the included wood screws (9) and washer (10), and fasten the indoor unit at 2
locations( ) each at the top and the middle of the unit.
2-13. FRONT PANEL INSTALLATION
1) Open the horizontal vane for the upper air outlet.
2) Fit the front panel onto the indoor unit from the front, and then push the upper
and lower areas that are marked with arrows.
3) Push the areas below the upper air outlet and the areas above and below the
lower air outlet that are marked with arrows.
4) After installing the front panel, install the 2 screws below the upper air outlet.

3. PURGING PROCEDURES, LEAK TEST, AND TEST RUN

3-1. PURGING PROCEDURES AND LEAK TEST
Refer to the procedures indicated in the installation manual of the outdoor unit.
3-2. TEST RUN
Make sure the following is done.
• The area around the damper is free of any objects, and the movement of the damper is not blocked.
• Panel is installed correctly.
• Indoor and outdoor units are installed correctly, and power is supplied.
1) Press the E.O. SW once for COOL, and twice for HEAT operation. Test run will be performed for 30 minutes. 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 75ºF (24ºC)) will start.
2) To stop operation, press the E.O. SW several times until all LED lamps turn off. Refer to operating instructions for
details.
Checking the remote (infrared) signal reception
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 compressor will not operate for 3 minutes to protect the air conditioner.
3-3. 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
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. 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 manual for de-
tails.
3-4. 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 removing the
remote controller from the remote controller holder, cleaning methods, precautions for operation, etc.)
• Recommend that the user read the OPERATING INSTRUCTIONS carefully.

4. PUMPING DOWN

Refer to the procedures indicated in the installation manual of the outdoor unit.
When pumping down the refrigerant, stop the compressor before disconnecting
the refrigerant pipes. The compressor may burst if air etc. get into it.
En-7
WARNING
26-17/32(674)
Emergency
operation switch
(E.O. SW)