TECHNICAL
BULLETIN
:
www.
S
amsungH
V
AC
.com
QS-
CAC
-
062016A
S
amsung CAC
System
s
(AC0***N*
*
CH/AA)
Cool Mode
Fan Operation Reduction
Reduc
ed
fan
option setting (cooling mode)
operation option
Page 1 of
4
9. Once the numbers shown above are entered into the controller, press the power button several times while pointing remote at the
indoor unit.
-
S
amsung CAC single
z
o
n
e
systems
(
AC0
**J
N
H
DCH/AA
,
AC0
**J
N4DCH/AA,
AC0
**KNL
DCH/AA
)
ha
v
e an o
ption to turn the fan
off once set temperature has been reached
in
Thermo
O
FF)while in cooling mode
.
-
This option should only be enabled when sensing room temperature externally
v
ia wired controller or external temperature sensor
(MRW
-TA
)
.
-
Enabling this option requires adjusting the 24 segment factory option code. The technician must a
dd 8 to
the current value of
segment 23 of factory option code
(0→8, 1→9, 2→A, 3→B, 4→C, 5 →D, 6→E, 7→F).
- Example: the factory option code for AC018FN4DCH/AA 4-way cassette is 0140EF-1950D8-27343B-3700
0
5. To enable the reduced
fan operation option, the new option code will be 0140EF-1950D8-27343B-3700
8
5.
- Factory option codes are different for each indoor unit model number
(model specific)
. This 24 segment code can be adjusted
with a wired controller, wireless controller, or with
S
NET
P
ro 2 ser
vi
ce software.
Changing segment 23 with a wireless controller
When only enabling this feature (not entering the entire 24 segment code) on an indoor unit
that has
a wireless
IR
receiver, the
single option setting feature can be used. Below are the steps required to only
c
hange segment 23 with a wireless controller
when
segment 23 is "0" from the factory and is being changed to "8"
. A
t this time all current CAC indoor units will require segment 23 to be
"8" to enable this feature
(full option codes can be found on pages 3 and 4 of this document).
1.
To enter service mode, r
emove the batteries and wait for the screen to go blank. While holding the temperature up and down buttons,
replace the
batteries.
2. Press the FAN DOWN button to adjust the segment on the left. Press FAN DOWN until the first segment on the screen is "d".
3. Press the FAN UP button to adjust the segment on the right. Press FAN UP once to make the left segment "1".
4. Press MODE to advance to the next page (noted by "Auto", "Cool", and "Dry").
5. Press the FAN DOWN button to adjust the segment on the left. Press FAN DOWN until the first segment on the screen is "2".
6. Press the FAN UP button to adjust the segment on the right. Press FAN UP to make the left segment "3".
7. Press MODE to advance to the next page (noted by "Auto", "Cool", and "Dry").8. Press the FAN DOWN button to adjust the
segment on
the left. Press FAN DOWN until the first segment on the screen is "8".
10
.
Remove the batteries form the controller. After the controller display goes blank, replace the batteries
and cover
for normal
operation.
Setting segment 23 of the indoor unit option code to "8"
"Page" 2
"Page" 1
"Page" 3
Press
Press
Press the FAN DOWN button to adjust the
segment on the left. Press FAN DOWN until the first segment on the screen is "8".
8
.
