Mitsubishi Electric PKA-ALA Serie Manuel D'installation page 16

7. Test run
Step 4 Confi rm 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 insuffi cient. 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 fl oat switch connector disconnected
P4
(CN4F)
P5 Drain overfl ow 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.
LED 1 (microcomputer power supply)
LED 2 (remote controller power supply)
LED 3 (indoor/outdoor unit communication)
7.2.2. Using wireless remote controller
3
B
en
3
5
15
LCD
P9
PA
Pb
PL
FB
U*, F*
(* indicates an
alphanumeric
character
excluding 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 con-
nected 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.
B
A
1
2
Fig. 7-5
A
1
2
4
Fig. 7-6
Description of malfunction
Pipe sensor error (dual-wall pipe)
Leakage error (refrigerant system)
Indoor unit fan motor error
Refrigerant circuit abnormal
Indoor controller board error
Outdoor unit malfunction
Refer to the wiring diagram for the
outdoor unit.
■ Test run (Fig. 7-5)
1. Press the button 1 to stop the air conditioner.
• If the weekly timer is enabled (
disable it ( is off).
2. Press the button 2 for 5 seconds.
• comes on and the unit enters the service mode.
3. Press the button 2.
• B comes on and the unit enters the test run mode.
4. Press the following buttons to start the test run.
: Switch the operation mode between cooling and heating and start the
test run.
: Switch the fan speed and start the test run.
: Switch the airflow direction and start the test run.
: Switch the louver and start the test run.
: Start the test run.
5. Stop the test run.
• Press the button 1 to stop the test run.
• After 2 hours, the stop signal is transmitted.
■ Self-check (Fig. 7-6)
1. Press the button 1 to stop the air conditioner.
• If the weekly timer is enabled (
disable it ( is off).
2. Press the button 2 for 5 seconds.
• A comes on and the unit enters the self-check mode.
3. Press the button 5 to select the refrigerant address (M-NET address) B of the
indoor unit for which you want to perform the self-check.
4. Press the button 4.
• If an error is detected, the check code is indicated by the number of beeps
from the indoor unit and the number of blinks of the OPERATION INDICA-
TOR lamp.
5. Press the button 1.
• A and the refrigerant address (M-NET address) B go off and the self-
check is completed.
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
is on), press the button 3 to
is on), press the button 3 to