Mitsubishi Electric Mr.SLIM PKA-MKA Serie Manuel D'installation page 19

7. Test run
7.1. Before test run
► After completing installation and the wiring and piping of the indoor and
outdoor units, check for refrigerant leakage, looseness in the power
supply or control wiring, wrong polarity, and no disconnection of one
phase in the supply.
► Use a 500-volt megohmmeter to check that the resistance between the
power supply terminals and ground is at least 1.0 MΩ.
7.2. Test run
7.2.1. Using wired remote controller.
■ Make sure to read operation manual before test run. (Especially items to secure safety)
Step 1 Turn on the power.
● Remote controller: The system will go into startup mode, and the remote controller power lamp (green) and "Please Wait" will blink. While the lamp and message are
blinking, the remote controller cannot be operated. Wait until "Please Wait" is not displayed before operating the remote controller. After the power is turned on, "Please
Wait" will be displayed for approximately 2 minutes.
● Indoor controller board: LED 1 will be lit up, LED 2 will be lit up (if the address is 0) or off (if the address is not 0), and LED 3 will blink.
● Outdoor controller board: LED 1 (green) and LED 2 (red) will be lit up. (After the startup mode of the system finishes, LED 2 will be turned off.) If the outdoor controller
board uses a digital display, [- ] and [ -] will be displayed alternately every second.
If the operations do not function correctly after the procedures in step 2 and thereafter are performed, the following causes should be considered and eliminated if they
are found.
(The symptoms below occur during the test run mode. "Startup" in the table means the LED display written above.)
Remote Controller Display
Remote controller displays "Please Wait", and
cannot be operated.
After power is turned on, "Please Wait" is dis-
played for 3 minutes, then error code is displayed.
No display appears even when remote controller
operation switch is turned on. (Operation lamp
does not light up.)
Display appears but soon disappears even when
remote controller is operated.
Step 2 Switch the remote controller to "Test run".
1 Select "Test run" from the Service menu, and press the [SELECT] button.
(Fig. 7-1)
2 Select "Test run" from the Test run menu, and press the [SELECT] button.
(Fig. 7-2)
3 The test run operation starts, and the Test run operation screen is displayed.
Step 3 Perform the test run and check the airflow temperature and auto vane.
1 Press the [F1] button to change the operation mode. (Fig. 7-3)
Cooling mode: Check that cool air blows from the unit.
Heating mode: Check that warm air blows from the unit.
2 Press the [SELECT] button to display the Vane operation screen, and then
press the [F1] and [F2] buttons to check the auto vane. (Fig. 7-4)
Press the [RETURN] button to return to the Test run operation screen.
Step 4 Confirm the operation of the outdoor unit fan.
The speed of the outdoor unit fan is controlled in order to control the performance of the unit. Depending on the ambient air, the fan will rotate at a slow speed and will keep
rotating at that speed unless the performance is insufficient. Therefore, the outdoor wind may cause the fan to stop rotating or to rotate in the opposite direction, but this is
not a problem.
Symptoms in test run mode
OUTDOOR BOARD LED Display
< > indicates digital display.
After "startup" is displayed, only green lights
up. <00>
After "startup" is displayed, green (once) and red
(once) blink alternately. <F1>
After "startup" is displayed, green (once) and red
(twice) blink alternately. <F3, F5, F9>
After "startup" is displayed, green (twice) and red
(once) blink alternately. <EA. Eb>
After "startup" is displayed, only green lights
up. <00>
After "startup" is displayed, only green lights
up. <00>
► Do not carry out this test on the control wiring (low voltage circuit)
terminals.
Warning:
Do not use the air conditioner if the insulation resistance is less than 1.0 MΩ.
• After power is turned on, "Please Wait" is displayed for 2
minutes during system startup. (Normal)
• Incorrect connection of outdoor terminal block (~/N: L, N and
S1, S2, S3) (3N~: L1, L2, L3, N and S1, S2, S3)
• Outdoor unit's protection devise connector is open.
• Incorrect wiring between the indoor and outdoor unit (Polarity
is wrong for S1, S2, S3.)
• Remote controller transmission wire short.
• There is no outdoor unit of address 0. (Address is other than
0.)
• Remote controller transmission wire open.
• After canceling function selection, operation is not possible for
about 30 seconds. (Normal)
Service menu
Test run
Input maintenance info.
Setting
Check
Others
Main menu:
Cursor
F1 F2 F3 F4
Fig. 7-1
Test run Remain
Pipe
Cool Auto
Switch disp.
Mode Fan
F1 F2 F3 F4
Fig. 7-3
Cause
Test run menu
Test run
Drain pump test run
Service menu:
Cursor
F1 F2 F3 F4
Fig. 7-2
Fri
Swing Low
Vert Horiz Vent.
F1 F2 F3 F4
Fig. 7-4
17
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