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7. Test run
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
LCD
Description of malfunction
LCD
Description of malfunction
P1
Intake sensor error
P9
Pipe sensor error (dual-wall pipe)
E0 – E5
Communication error between the
remote controller and the indoor
unit
P2
Pipe sensor error (liquid pipe)
PA
Leakage error (refrigerant system)
P4
Drain float switch connector
disconnected (CN4F)
Pb
Indoor unit fan motor error
PL
Refrigerant circuit abnormal
P5
Drain overflow protection operation
FB
Indoor controller board error
E6 – EF
Communication error between the
indoor unit and the outdoor unit
P6
Freezing/overheating protection
operation
U*, F*
(* indicates an
alphanumeric
character
excluding FB.)
Outdoor unit malfunction
Refer to the wiring diagram for the
outdoor unit.
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)
Indicates whether control power is supplied. Make sure that this LED is always lit.
LED2 (remote controller power supply)
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.
LED3 (indoor/outdoor unit communication)
Indicates whether the indoor and outdoor units are communicating. Make sure that this LED is always blinking.
7.3. Self-check
■ Refer to the installation manual that comes with each remote controller for details.
OPERATION
INDICATOR
lamp blinking
pattern
Beep
Beep
Beep
Beep
Beep
Beep
Beep
Off
Approx. 2.5 sec.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.
On
Approx. 3 sec.
On
0.5 sec.
On
0.5 sec.
· · · Repeated
Number of blinks/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “U2”)
Number of blinks/beeps in pattern indicates
the check code in the following table
n
th
1
st
2
nd
3
rd
1
st
2
nd
Self-check
starts
(Start signal
received)
Beeper sounds
[Output pattern B]
OPERATION
INDICATOR
lamp blinking
pattern
Beep
Beep
Beep Beep
Beep
Beep
Beep
Off
Approx. 2.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
On
0.5 sec.
Off
Approx. 2.5 sec.
On
0.5 sec.
On
0.5 sec.
· · · Repeated
Number of blinks/beeps in pattern indicates the check
code in the following table (i.e., n=5 for “P5”)
Number of blinks/beeps in pattern indicates
the check code in the following table
n
th
1
st
2
nd
3
rd
1
st
2
nd
Self-check
starts
(Start signal
received)
Beeper sounds
• Refer to the following tables for details on the check codes. (Wireless remote controller)
[Output pattern A]
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