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■ Setting record
Record any changes to the settings in the following table.
Setting description
Filter sign
Ceiling height
Outlet directions
Room temperature control for indoor
unit sensor
Room temperature control for wired
remote controller sensor
Auto restart
Room temperature sensor switching
Remote controller custom code
External input control
Room temperature sensor switching (Aux.)
Indoor unit fan control for energy saving for cooling
Switching functions for external output terminal
After completing the Function Setting, be sure to turn off the power and turn it on again.
8. CHECK LIST
Pay special attention to the check items below when installing the indoor unit(s). After instal-
lation 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 com-
pleted?
Does water drain easily from the
indoor units?
Are the wires and pipes all con-
nected completely?
Is the connection cable the specified
thickness?
Are the inlets and outlets free of any
obstacles?
After installation is completed, has
the proper operation and handling
been explained to the user?
9. TEST RUN
9.1. Check items
□ Is operation of each button on the remote controller normal?
□ Does each lamp light normally?
□ Is the drain normal?
□ Do not have an abnormal noise and vibration during operation?
Do not operate the air conditioner in test run for a long time.
9.2. Operation method
Depending on your installation, choose from the following:
■ By the wireless remote controller (with [TEST RUN] button)
(1) To start test run, press [START/STOP] and [TEST RUN] on the remote controller.
(2) To end test run, press [START/STOP] on the remote controller.
■ By the indoor unit or IR receiver unit
(1) To start test run, press [MANUAL AUTO] of the unit for more than 10 seconds (forced
cooling).
(2) To end test run, press [MANUAL AUTO] for more than 3 seconds or press [START/STOP]
on the remote controller.
The Operation indicator lamp and Timer indicator lamp will simultaneously fl ash during
the test run mode.
■ By the wired remote controller
(1) For the operation method, refer to the installation manual and the operating manual of
the wired remote controller.
Heating test run will begin in a few minutes when HEAT is selected by the remote control-
ler [reverse cycle model only].
En-18
Setting value
Cooling
Heating
Cooling
Heating
If not performed correctly
CHECK BOX
Vibration, noise, indoor unit may
drop
No cooling, No heating
Water leakage
Water leakage
No operation, heat or burn dam-
age
No operation, heat or burn dam-
age
No cooling, No heating
10. FINISHING
10.1. Installing heat insulation
• After checking for gas leaks (refer to the Installation Manual of the outdoor unit),
perform this section.
• Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to
do so may cause water leaks.
• Must fi t tightly against body without any gap.
After checking for gas leaks, insulate by wrapping insulation around the 2 parts (gas and
liquid) of the indoor unit coupling, using the Coupler Heat Insulation.
After installing the Coupler Heat Insulation, wrap both ends with vinyl tape so that there is
no gap.
Coupler heat insulation
Body
Be sure to overlap the
insulation
No gap
11. CUSTOMER GUIDANCE
Explain the following to the customer in accordance with the operating manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air
fl ow switching, and other remote controller operations.
(2) Cleaning and maintenance of the product, and other items such as air fi lters and air
louvers if applicable.
(3) Give the operating and installation manuals to the customer.
(4) If the indoor unit custom code is changed, and the installation includes a wireless remote
controller, inform the customer the changed code. (On some wireless remote controllers,
the custom code may return to A when batteries are replaced.)
12. ERROR CODES
If you use a wireless remote controller, the lamp on the photo detector unit will output error
codes by way of blinking patterns. If you use a wired remote controller, error codes will ap-
pear on the remote control display. Refer to the lamp blinking patterns and error codes in
the table. An error display is displayed only during operation.
Error display
OPERATION
TIMER
ECONOMY
lamp
lamp
lamp
(green)
(orange)
(green)
(1)
(1)
(1)
(2)
(1)
(5)
(1)
(6)
(1)
(8)
(2)
(1)
(2)
(2)
(2)
(3)
(2)
(4)
(2)
(6)
(2)
(7)
(2)
(9)
(3)
(1)
CAUTION
No gap
Coupler heat
insulation
Error code
Description
Serial communication error
• Wired remote controller
communication error
• Server room control
communication error
Check run unfinished
Automatic airflow adjustment error
Peripheral unit transmission PCB
connection error
External communication error
Unit number or Refrigerant circuit
address setting error
[Simultaneous Multi]
Indoor unit capacity error
Combination error
• Connection unit number
error (indoor secondary unit)
[Simultaneous Multi]
• Connection unit number error
(indoor unit or branch unit)
[Flexible Multi]
Indoor unit address setting error
Primary unit, secondary unit setup
error [Simultaneous Multi]
Connection unit number error in
wired remote controller system
Power supply interruption error
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