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a
a
b
b
1
2
3
1
2
3
c
c
d1
d1
1
2
3
1
2
3
1
P
P
P
P
1
2
1
2
P
P
1
2
e
a
Power supply
b
Residual current device
c
Outdoor unit
d1
Indoor unit (master)
d2
Indoor unit (slave)
e
User interface
▪ You may control up to 16 units with 1 remote controller
(combination of simultaneous operation and group control)
▪ All indoor units operate according to the user interface
▪ The thermistor reading of room temperature is effective only for
the indoor unit connected to the user interface.
Control with 2 user interfaces: 2 user interfaces control 1
indoor unit
a
b
1
2
3
c
1
2
3
d
P
P
1
2
e(1)
e(2)
P
P
P
P
1
2
1
2
a
Power supply
b
Residual current device
c
Outdoor unit
d
Indoor unit
e1
User interface (main)
e2
User interface (sub)
INFORMATION
When using 2 user interfaces, one must be set to "MAIN"
and the other to "SUB". For setting refer to the installation
manual of the connected user interface.
15
Finishing the indoor unit
installation
NOTICE
Block any gaps around pipes and cables with sealing
material (accessory) to avoid dust from entering the indoor
unit.
FHA-A(9)
Split system air conditioner
3P668115-4E – 2022.11
a
a
b
b
1
2
3
1
2
3
c
c
d1
d1
2
3
1
2
3
1
2
3
P
P
P
P
P
1
2
1
2
15 Finishing the indoor unit installation
15.1
To mount the suction grille and
decoration side panel
1 Install securely in the reverse order. Refer to
unit" [ 4 15].
indoor
2 When installing the suction grille, attach the strap of the suction
grille to the hook on the indoor unit.
INFORMATION
When closing the suction grille, make sure the straps of the
d2
suction grille are not pinched anywhere.
P
1
2
a
b
c
d
b
e
f
a
Round hole
b
Hook
c
Strap
d
Indoor unit
e
Suction grille
f
Cross-shaped hole
16
Commissioning
NOTICE
General
commissioning
commissioning instructions in this chapter, a general
commissioning checklist is also available on the Daikin
Business Portal (authentication required).
The general commissioning checklist is complementary to
the instructions in this chapter and can be used as a
guideline and reporting template during commissioning and
hand-over to the user.
NOTICE
ALWAYS operate the unit with thermistors and/or pressure
sensors/switches. If NOT, burning of the compressor might
be the result.
16.1
Checklist before commissioning
1 After the installation of the unit, check the items listed below.
2 Close the unit.
3 Power up the unit.
You have read the complete installation and operation
instructions described in the installer and user reference
guide.
The indoor unit is properly mounted.
The outdoor unit is properly mounted.
The drain piping is properly installed and insulated, and
drainage flows smoothly. Check for water leaks.
Possible consequence: condensate water might drip.
The refrigerant pipes (gas and liquid) are installed
correctly and thermally insulated.
There are NO refrigerant leaks.
There are NO missing phases or reversed phases.
"To open the
a
b
c
checklist.
Next
to
the
Installation and operation manual
21
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