En-19
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
Wired Remote
Controller Error
code
Error contents
OPERATION
lamp (green)
TIMER lamp
(orange)
FILTER lamp
(red)
(1)
(2)
Remote controller
communication error
(1)
(4)
Network communication
error
(1)
(6)
Peripheral unit
communication error
(2)
(6)
Indoor unit address
setting error
(2)
(9)
Connection unit number
error in wired remote
controller system
(3)
(1)
Indoor unit power supply
abnormal
(3)
(2)
Indoor unit main PCB
error
(3)
(10)
Indoor unit
communication circuit
(wired remote controller)
error
(4)
(1)
Indoor unit room temp.
thermistor error
(4)
(2)
Indoor unit heat ex.
temp. thermistor error
(5)
(1)
Indoor unit fan motor 1
error
(5)
(2)
Indoor unit coil
(expansion valve) error
(5)
(3)
Indoor unit water drain
abnormal
(9)
(15)
Outdoor unit
miscellaneous error
(13)
(1)
RB unit error
Display mode
: 0.5s ON / 0.5s OFF
: 0.1s ON / 0.1s OFF
( ) : Number of
fl
ashing
Wired Remote Controller Display
Error code
Error icon
Touch the [Next Page] (or [previous page])
to switch to other indoor unit information.
Touch the [Status].
Touch the [Error Information].
2-digit numbers are corresponding to
the error code in the preceding table.
For more information, refer to the installation manual of the remote controller.
UTY-RNKY / UTY-RNKG / UTY-RNKYT (3-wire type)
URY-RNRY / UTY-RNRG (2-wire type)
For details on marking the ERROR CODES, 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
If not performed correctly
CHECK
BOX
Has the indoor unit been installed
correctly?
Vibration, noise, indoor unit
may drop
Has there been a check for gas leaks
(refrigerant pipes)?
No cooling, No heating
Has heat insulation work been
completed?
Water leakage
Does water drain easily from the indoor
units?
Water leakage
Is the voltage of the power source the
same as that indicated on the label on
the indoor unit?
No operation, heat or burn
damage
Are the wires and pipes all connected
completely?
No operation, heat or burn
damage
Is the indoor unit earthed (grounded)?
Short circuit
Is the connection cable the specified
thickness?
No operation, heat or burn
damage
Are the inlets and outlets free of any
obstacles?
No cooling, No heating
Does start and stop air conditioner
operation by remote controller or external
device?
No operation
After installation is completed, has the
proper operation and handling been
explained to the user?
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