Hisense Refrigerators
3 fault codes documented
Door Open Alarm
Door Open Alarm (dr on display, flickering icon, buzzer) — Door left open
If any Refrigerator door is left open for more than 2 minutes, an alarm will activate. The "Alarm" icon will flicker, the control panel will display "dr", and a buzzer will sound 3 times per minute for up to 8 minutes.
OF
OF on display — Cooling Off Mode (Demo Mode)
The Refrigerator is in Demo Mode, also known as Cooling Off Mode, which is for store displays. In this mode, the Refrigerator appears to be working, but it will not produce any cool air. The control panel will show "OF".
Water Tank Alarm
Water Tank Alarm (flickering icon) — Water tank not in place
The "Water" icon will flicker if the water tank for the dispenser is not correctly installed. This indicates the Refrigerator does not detect the tank in its proper position.