Samsung RT53 Service Manual page 39

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TROUBLESHOOTING
4-1-4. Restoration of Previous Settings upon Instant Power Outage
1) If the Display Panel is initialized by the instant power outage, it will cause customer inquiries. To prevent
this, when the power is restored, the previous settings will be restored or reset based on the inside
temperature of the Fridge Compartment.
2) Upon the initial power on , it checks its Fridge temperature. When it is lower than +12℃, it is to be
considered as an instant power failure and it brings back all its previous operation functions related to th
panel display.
3) When it is highe r than +12℃, it is to be considered as a long-period power failure and it will initialize the
panel display.
(Fridge : Automatically set to 2℃ → MID)
4-1-5. Demo Mode Function for Store Display
1) During the Normal Operation, press the Power Cool + Fridge buttons fo r 7 seconds. Then, the "2℃,3℃,5
temperature LEDs on the Display Panel will blink at the interval of 0.5 seconds fo r 3 seconds.
2) At this time, release the Power Cool + Fridge buttons and press the Fridge button (it sends out "Ding
Dong" sound.) Then, it shifts to the DEMO MODE.
3) When the unit is in Demo Mode, all the functions including the Display Panel works normal. But, the
Compressor does not operate.
4) To cancel the Demo Mode, press the same buttons as you enter into the Demo Mode or turn off its pow
5) Also, when the Fridge room temperature goes over 65℃ during the Demo Mode, it will go back to the
normal cooling operation.
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