GEAppliances CFE28TSH Technical Service Manual page 58

• Compressor and fan speeds will vary with
cabinet temperatures until the set temperature is
obtained.
• After 6 hours of compressor run time (door
openings not counted), both the fresh food and
freezer will enter a heated defrost cycle.
• When cooling is required, the main control board
moves the 3-way valve to either the A position
(supplying refrigerant to both fresh food and
freezer evaporators), or the B position (supplying
only the freezer evaporator), depending upon
compartment temperatures.
• The compressor and fan(s) are delayed for 3
minutes before restarting.
• When only the fresh food temperature is
3-way valve will move to the B
position (supplying only the freezer evaporator)
to continue cooling the freezer. Fresh food cycle
defrost will begin.
• When the freezer and fresh food temperatures
compressor and fans will turn
3-way valve will move to the D position,
sounds.
• After the accumulated compressor run time
(including door openings) has been reached, the
unit will begin the defrost pre-chill cycle.
: (1 second of door-open time = 100 seconds of
compressor run time.)
• The fresh food cycle defrost occurs between
heated fresh food defrost cycles to reduce
excessive frost accumulations on the fresh food
evaporator.
• During the fresh food cycle defrost, the
evaporator fan runs and there is no refrigerant
evaporator.
• The fresh food cycle defrost does not use the
fresh food defrost heater.
• The fresh food cycle defrost will occur any time
the temperature in the fresh food compartment
• The fresh food cycle defrost does not occur when
the
• After accumulating 32 hours of compressor
run time (actual compressor run time and door
openings), the operating system will enter freezer
pre-chill.
• The pre-chill will occur whether the last freezer
defrost was normal or abnormal.
• Pre-chill time will vary from 10 to 60 minutes,
depending on door openings and compartment
temperatures during pre-chill.
• Any compressor run time prior to the beginning
of pre-chill does not count in the pre-chill time.
• There is a 6 second delay after the compressor
the defrost heaters.
• The ice box fan will run at HIGH speed whenever
the ice box cooling is needed during the pre-chill
cycle.
• Pre-chill ends when either the maximum time
expires, the evaporator pre-chill temperature is
met, or the freezer pre-chill temperatures is met.
• Fresh food only heated defrost occurs after 32
hours of compressor run time.
• A freezer pre-chill will run before the fresh food
only heated defrost.
• Providing that the previous freezer and/or fresh
food heated defrost cycles were normal, the
freezer will defrost with every third fresh food
defrost cycle.
• Fresh food only heated defrost occurs 32, 64,
and 96 hours after defrosting both the fresh
food and the freezer together.
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