Samsung AC018KN4DCH Service Manual page 59

Troubleshooting
4-3-2 Eco Mode [Power Saving Mode]
Eco mode lamp: RED
Display Eco Mode Lamp
Mode
Segment 1 Segment 2 Segment 3 Segment 4 RED
Eco Mode BLANK BLANK BLANK BLANK On
Press K3 to go out from the eco mode.
Eco Mode Exit Off
At the driving signal or test run (cooling/heating) of the user, the mode is released.
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