Samsung RT38 Service Manual page 30

4. TROUBLESHOOTING
4-1. Check-List before Trouble-Shooting
4-1-1. Test Function (Forced Operation / Forced Defrost)
4-1-1-1. How to Enter the TEST MODE
4-1-1-1-1. For Models with Electronic Displays
1. When pressing the "Fridge" and the "Power Cool" buttons on the PANEL PCB at the same time for more
than 6 seconds, the PANEL DISPLAY will be on and off with an interval of 0.5 second for about 4 seconds.
At this time, release the "Fridge" and the "Power Cool" buttons, and press the "Fridge" button. Then, it will
go into the TEST MODE.
2. At the Test mode, all the display buttons will work as the Test button.
3. Each time the Test button is pressed, it will change in the following order.
Forced Operation → Forced F-Defrost → Cancellation (Normal Operation)
4. It is recommended that the unit be re-plugged in to terminate the operation of the Test function.
1) Test Mode Entering Process
① Press the "Power Cool" and the "Fridge" buttons at the same time for 6 seconds.
② When it is on the Test Mode, press the "Fridge" button once.
① ②
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① ②