Samsung Duct Type Series Installation Manual page 26

Setting an indoor unit address and installation option
Step 3. Check the option you have set
After setting an option, press
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Step 4. Input option
Press the operation button
For the correct option setting, you must input the option twice.
Step 5. Check operation
1) Reset the indoor unit by pressing the RESET button of indoor unit or outdoor unit.
2) Take the batteries out of the remote controller and insert them again and then press the operation button.
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button to check whether the option code you input is correct or not.
with the direction of remote control for set.