Fisher & Paykel 635 Active Smart, Service Manual

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4 THEORY OF OPERATION
4.1 Terms
CABINET WRAPPER
Pre-painted steel.
LINER
A one-piece vacuum formed ABS liner with a plug-in divider
DIVIDER PARTITION
Injected moulding of HIPS, with two outer injected moulded housings, and an insulated ducted moulded
polystyrene inner core.
FAN MOTORS
DC 12 volt brushless variable speed fan motors for air circulation in both the FC and PC compartments.
EVAPORATOR
Aluminium fin on tube type mounted vertically on the back wall of the FC.
SUCTION and CAPILLARY LINE
Foamed into the back of the cabinet with all joints of the evaporator having been joined by induction brazing
in the FC.
POWER/CONTROL MODULE
Contains the microprocessor that controls all functions of the refrigerator and gathers data from the sensors.
This module also contains support circuitry to switch the various outputs.
DISPLAY MODULE
Using signals from the power/control module, this module generates the LCD or LED display.
REED SENSORS
A reed switch encapsulated within a plastic housing, mounted on the cross and base rails behind a plastic
cover. A magnet housed just under the lower end cap of each door activates this sensor when the door is
closed.
TERMS
Within this manual the following terms are used:
PC = Provision compartment
FC = Freezer compartment
LOW AMBIENT HEATER
Two types are used. A PCB type used in the air duct of “T” models. A blanket wire type used in the divider
of “B” models.