Mitsubishi Electric Mr.SLIM PEAD-A09AA7 Manuel D'installation page 16

9. Test run
9.2. Test run
9.2.1. 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.)
Symptoms in test run mode
Remote Controller Display
Remote controller displays "PLEASE WAIT", and
cannot be operated.
After power is turned on, "PLEASE WAIT" is
displayed 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. 9-2-1] (P.7)
2 Select "Test run" from the Test run menu, and press the [SELECT] button. [Fig. 9-2-2] (P.7)
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. 9-2-3] (P.7)
Cooling mode: Check that cool air blows from the unit.
Heating mode: Check that warm air blows from the unit.
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.
Step 5 Stop the test run.
1 Press the [ON/OFF] button to stop the test run. (The Test run menu will appear.)
Note: If an error is displayed on the remote controller, see the table below.
LCD Description of malfunction
P1 Intake sensor error
P2 Pipe sensor error (liquid pipe)
Drain float switch connector
P4
disconnected (CN4F)
P5 Drain overflow protection operation
Freezing/overheating protection
P6
operation
P8 Pipe temperature error
• See the table below for the details of the LED display (LED 1, 2, and 3) on the indoor controller board.
LED1 (microcomputer power supply)
LED2 (remote controller power supply)
LED3 (indoor/outdoor unit communication)
Note:
If the unit is operated continuously during a test run, the unit stops after 2 hours.
16
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>
LCD Description of malfunction
P9 Pipe sensor error (dual-wall pipe)
PA Leakage error (refrigerant system)
PB (Pb) Indoor unit fan motor error
PL Refrigerant circuit abnormal
FB Indoor controller board error
U*, F*
(* indicates an Outdoor unit malfunction
alphanumeric Refer to the wiring diagram for the
character excluding outdoor unit.
FB.)
Indicates whether control power is supplied. Make sure that this LED is always lit.
Indicates whether power is supplied to the wired remote controller. The LED is lit only for the indoor unit that is
connected to the outdoor unit that has an address of 0.
Indicates whether the indoor and outdoor units are communicating. Make sure that this LED is always blinking.
Cause
• After power is turned on, "PLEASE WAIT" is displayed for 2
minutes during system startup. (Normal)
• Incorrect connection of outdoor terminal block (R, S, T and S
S .)
3
• Outdoor unit's protection devise connector is open.
• Incorrect wiring between the indoor and outdoor unit (Polarity is
wrong for S , S , S .)
1 2 3
• 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)
LCD Description of malfunction
Communication error between the
E0 – E5
remote controller and the indoor unit
Communication error between the
E6 – EF
indoor unit and the outdoor unit
, S ,
1 2