Haier H21BFC45N User Manual page 18

(12) Demo mode
F G K
1. Compressor and fan motors do not operate in the demo mode.
2. Press Button F, G, and K at the same time for 3 seconds: After the first sound
of the buzzer, the demo mode will be in effect. Press Button F, G, and K at the
same time for 3 seconds again, and the demo mode will be canceled.
(13) Door ajar alarm
When any door is open for over :60 seconds, the door ajar alarm function of the
refrigerator will go off, and the refrigerator will produce buzzers once every :30
seconds. This alerts the user that there is a door left open.
(14) Over°voltage protection
The refrigerator is equipped for over-voltage protection. When the function of
over-voltage is in effect, the refrigerator will turn off automatically. After 5
minutes, the power should be turned back on.
(15) Power-break memorization function
When the refrigerator cuts off from over-voltage protection, the settings of the
refrigerator before the power break are memorized. This allows the refrigerator
to return to the previous settings when it is turned back on.
(16) Fault Display
If the display is broken but you still hear accompanying beeps when you press
buttons, this means the buttons are still working. However, you should call an
after-sales service engineer to fix the problem to ensure optimum performance.
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