En-20
(4) Press the SET TEMP. buttons ( ) ( ) to select the set-
ting value.
The display flashes as shown to the right during setting
value selection.
Setting value
SU MO TU WE TH FR SA
(5) Press the TIMER SET button to confirm the setting.
Press the TIMER SET button for a few seconds until the
setting value stops flashing.
If the setting value display changes or if “- -” is displayed
when the flashing stops, the setting value has not been
set correctly.
(An invalid setting value may have been selected for the
indoor unit.)
(6) Repeat steps 2 to 5 to perform additional settings.
Press the SET TEMP. buttons ( ) ( ) and FAN button
simultaneously again for more than 5 seconds to cancel
the function setting mode. In addition, the function setting
mode will be automatically canceled after 1 minute if no
operation is performed.
(7) After completing the FUNCTION SETTING, be sure to
turn off the power and turn it on again.
• Function Details
(1) Filter Sign
The indoor unit has a sign to inform the user that it is time to
clean the filter. Select the time setting for the filter sign display
interval in the table below according to the amount of dust
or debris in the room. If you do not wish the filter sign to be
displayed, select the setting value for “No indication”.
(♦... Factory setting)
Setting description
Function
number
Setting
value
Standard (400 hours)
11
00
Long interval (1000 hours)
01
Short interval (200 hours)
02
♦
No indication
03
(2) Static pressure
Select appropriate static pressure according to the installation
conditions.
(♦... Factory setting)
Setting description
Function
number
Setting
value
0 in. WG (0 Pa)
26
00
0.04 in. WG (10 Pa)
01
0.08 in. WG (20 Pa)
02
0.12 in. WG (30 Pa)
03
0.16 in. WG (40 Pa)
04
0.20 in. WG (50 Pa)
05
0.24 in. WG (60 Pa)
06
0.28 in. WG (70 Pa)
07
0.32 in. WG (80 Pa)
08
0.36 in. WG (90 Pa)
09
♦ 0.1 in. WG (25 Pa) [Standard]
31
Range of static pressure is different from one model to other.
Model name
Range of static pressure
ARU9RLF
0 to 0.36 in. WG (0 to 90 Pa)
ARU12RLF
ARU18RLF
ARU24RLF
0 to 0.2 in. WG (0 to 50 Pa)
(3) Cooling room temperature correction
Depending on the installed environment, the room tempera-
ture sensor may require a correction.
The settings may be selected as shown in the table below.
(♦... Factory setting)
Setting description
Function
number
Setting
value
♦
Standard
30
00
Slightly lower control
01
Lower control
02
Warmer control
03
When using floor console installation, change the setting
value to "01".
