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Option code programming with a wired controller
If a wired controller is connected, option code programming can be done via service mode. The example below explains how to modify an
option code using MWR-WE10N. When using other wired controller models, refer to the wired controller installation manual for full indoor
unit programming instructions.
Using MWR-WE10N premium wired controller
1. Hold SET and ESC for 5 seconds to enter service settings mode.
2. Press the up arrow button, select Main Menu 4.
3. Press the right arrow button to advance.
4. Press the up arrow button to select sub menu 2.
5. Press the right arrow to advance.
6. Enter the option code into the data bit section using the up, down, and right arrow buttons. The up and down arrows
will change the data bit that is flashing. To only change the 23rd segment to enable reduce fan operation in cool
mode, press the right arrow until the 23rd segment is flashing. Press up until this segment is "8".
7.
Once entered, press SET to save.
8.
Press ESC twice to exit the settings section.
Example: AC018JN4DCH/AA indoor unit option code segment 23 change using MWR-WE10N
Standard option code
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TECHNICAL BULLETIN:
Samsung CAC Systems (AC0***N**CH/AA)
Cool Mode Fan Operation Reduction
www.SamsungHVAC.com
Option code with reduce fan operation enabled
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