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7. Test run
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.
F1
F2
F3
F4
Cool
Pipe
Auto
Switch disp.
Mode
Fan
Remain
Test run
Fig. 7-3
F1
F2
F3
F4
u
n
e
m
e
c
i
v
r
e
S
r
o
s
r
u
C
:
u
n
e
m
n
i
a
M
Test run
Input maintenance info.
Function setting
Check
Self check
Fig. 7-1
F1
F2
F3
F4
Test run menu
Cursor
Service menu:
Test run
Drain pump test run
Fig. 7-2
F1
F2
F3
F4
Remain
Vane
Fig. 7-4
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.
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)
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 con-
nected 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.
7.2.2. Using SW4 in outdoor unit
Refer to the outdoor unit installation manual.
7.3. Self-check
■ Refer to the installation manual that comes with each remote controller for details.
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