Question about Hama Ews-800

I don't know the problem! I have no idea.

6.5 Alarm mode
• Repeatedly press the ALM button (29) to access HI AL
(4/11/16/21) or LO AL (4/11/16/21) alarm mode.
• In alarm mode HI AL (4/11/16/21), repeatedly press the SET
button (28) to switch between the following alarm functions:
• Alarm (hour/minute) (24)
• High room humidity alarm (14)
• High room temperature alarm (12)
• High outside humidity alarm (20)
• High outdoor temperature alarm (18)
• High absolute atmospheric pressure alarm (5)
The applicable display begins to flash.
• In alarm mode LO AL (4/11/16/21), repeatedly press the SET
button (28) to switch between the following alarm functions:
• Alarm (hour/minute) (24)
• Low room humidity alarm (14)
• Low room temperature alarm (12)
• Low outside humidity alarm (20)
• Low outdoor temperature alarm (18)
• Low absolute atmospheric pressure alarm (5)