Vertical Girder Hater Control; Defrost Control - Haier HB21FSSAA Service Manual

SERVICE MANUAL
Model: HB21FSSAA, HB21FG*
5-4. Vertical girder heater control
According to different ambient temperature and different humidity, the working time of vertical girder
heater are also different. For example, If the ambient temperature is between 30 ℃ to 35 ℃,
humidity is between 60% to 70%, the vertical vertical girder heater work 25 seconds per minute.

5-5. Defrost control

The refrigerator control the defrost start based on different compressor accumulated working time
and door open times. When the defrost sensor reaches +7ºC, refrigerator stop defrost.
If the defrost heater working time has reach 120 minutes, but defrost sensor failing to reach +7℃,
refrigerator will stop defrost and error code ED will be displayed in display area.
When the defrost sensor failure, defrost heater will work 60 minutes and then stop work in every
defrost cycle.
Issue 2010-12
Rev.
Ref1012S008V0
27