8. TEST RUN
8.1. Test run using Outdoor unit (PCB)
• Refer to the Installation Manual for the outdoor unit if the PCB for the outdoor unit is to
be used for the test run.
8.2. Test run using Remote Controller
• Refer to the Installation Manual for the remote controller to perform the test run using
the wireless remote controller.
• When the air conditioner is being test run, the OPERATION and TIMER indicator lamps
fl ash slowly at the same time.
For details, please refer to the Manual of "IR Receiver Unit" or "Wired Remote Controller".
9. CHECK LIST
Pay special attention to the check items below when installing the indoor unit(s). After
installation is complete, be sure to check the following check items again.
CHECK ITEMS
Has the indoor unit been installed
correctly?
Has there been a check for gas leaks
(refrigerant pipes)?
Has heat insulation work been
completed?
Does water drain easily from the indoor
units?
Is the voltage of the power source the
same as that indicated on the label on
the indoor unit?
Are the wires and pipes all connected
completely?
Is the indoor unit earthed (grounded)?
Is the connection cable the specified
thickness?
Are the inlets and outlets free of any
obstacles?
Does start and stop air conditioner
operation by remote controller
or external device?
After installation is completed, has the
proper operation and handling been
explained to the user?
En-17
CHECK
If not performed correctly
Vibration, noise, indoor unit may
drop
No cooling, No heating
Water leakage
Water leakage
No operation, heat or burn
damage
No operation, heat or burn
damage
Short circuit
No operation, heat or burn
damage
No cooling, No heating
No operation
10. ERROR CODES
If you use a wired type remote controller, error codes will appear on the remote control-
ler display. If you use a wireless remote controller, the lamp on the photodetector unit will
output error codes by way of blinking patterns. See the lamp blinking patterns and error
codes in the table below.
Error indications
OPERATION
TIMER lamp
lamp (green)
(orange)
(1)
(1)
(1)
(2)
(2)
BOX
(3)
(3)
(3)
(4)
(4)
(5)
(5)
(5)
(9)
(13)
Indicator mode
( ) : Number of fl ashing
Wired Remote Controller Display
UTY-RNKU (3-wire type)
UTY-RNRU (2-wire type)
Touch the [Status].
For more information, refer to the installation manual of the remote controller.
For details on marking the ERROR CODES, please refer to the Manual of "IR Receiver
Unit" or "Wired Remote Controller".
Wired Remote
Controller Error
FILTER lamp
code
(red)
(2)
(4)
(6)
(6)
(9)
(1)
(2)
(10)
(1)
(2)
(1)
(2)
(3)
(15)
(1)
: 0.5s ON / 0.5s OFF
: 0.1s ON / 0.1s OFF
Error code
Touch the [Next Page] (or [previous page])
Error icon
to switch to other indoor unit information.
Touch the [Error Information].
2-digit numbers are corresponding to
the error code in the preceding table.
Error contents
Remote controller
communication error
Network communication
error
Peripheral unit
communication error
Indoor unit address
setting error
Connection unit number
error in wired remote
controller system
Indoor unit power supply
abnormal
Indoor unit main PCB
error
Indoor unit
communication circuit
(wired remote controller)
error
Indoor unit room temp.
thermistor error
Indoor unit heat ex.
temp. thermistor error
Indoor unit fan motor 1
error
Indoor unit coil
(expansion valve) error
Indoor unit water drain
abnormal
Outdoor unit
miscellaneous error
RB unit error
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