Haier HB21FWRSS Service Manual - page 30
Conditions for switch-on
Conditions for switch-off
1780RPM 1500RPM
1300RPM
1.Duration from the product
connected to the power
supply for the first time till
the air escaper is closed
once;
2.The Product is set to
“Fast-freezing”
3.The product is in forced
starting mode;
4.The product is in fast freezer
mode.
5.TEST MODE1;
6.The fridge door is open for 2
minutes.
It’s the
general
condition, and
the condition
of high speed
is excluded.
Power
consume
mode
1. Auto defrost mode or
forced-defrost mode;
2. Within 12 minutes after
defrost;
3. The compressor stops and
the fridge air escaper is shut.
(Power consume mode is
excluded.)
4. Freezer door is open.
5. TEST MODE3(heater test)
14V 11.5V
7.Defrosting Control
The product will start defrosting after compressor has running more than accumulative total
7 hours, and will stop defrosting when the defrost sensor temperature rise up 7 centigrade.
The compressor is stop and fridge air escaper is close when defrosting.
The first defrosting cycle start after compressor has running more than accumulative total 4
hours, if the product is powered initially or reset the control board.
After defrosting, if the compressor has running more than accumulative total 4 hours,
product will controlled according to:
a. Fridge sensor temperature is more than 10 ºC , start defrosting immediately
b. Freezer sensor temperature is more than -5 ºC, start defrosting immediately
c. Fridge door and freezer door has opened more than 5 times, start defrosting immediately
d. No above instance, the product will start defrosting after compressor has running more
than accumulative total 7 hours,
The product can enter into defrosting mode, and exit defrosting mode after the defrosting
time is more than 120 minutes, when the defrosting sensor malfunction (short circuit or open
circuit).
If defrosting time is more than 120 minutes and the defrosting sensor temperature can’t
reach 7 ºC, the product will disconnect defrosting heater, and display ED on fridge display area
under malfunction mode until in some defrosting cycle the defrost sensor temperature reache 7
ºC.
If the product is set to enter into fast freezer or fast fridge, the icon of fast freezer or fast
fridge will light, but the defrosting process will go on, fast freezer or fast fridge mode will not
execute until finishing this defrosting cycle. The surplus defrosting time is not reckoned in the
time of fast freezer or fast fridge.
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