Samsung RF31FM Series Manual page 131

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5. Check the installation status
5-1. Function for failure diagnosis
2) Self-diagnostic function during normal operation
RF31FM*S**(For Ice/water model Only)
2-1) If Energy Saver Key + Lighting Key are pressed simultaneously for 6 seconds during normal operation,
the temperature setting display will operate for 2 seconds (ON/OFF 0.5sec each).
If Energy Saver Key + Lighting Key are pressed simultaneously for 8 seconds (including above 2seconds),
self-diagnostic function will be selected.
2-2) At this moment, self-diagnostic function will be returned with buzzer sound 'ding-dong'.
If there is an error, display of error will be operated for 30 seconds and then return to normal condition
whether problem is corrected or not. (Refer to self-diagnosis CHECK LIST)
2-3) Input by button is not accepted during self-diagnostic function.
② If Energy Saver Key + Lighting Key are pressed simultaneously
for 8 seconds, the error mode by self-diagnosis will be canceled.
RF31FM*D** / RF24FS**(For Ice/water model Only)
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